Apparatus. AMERICAN 
HAND-BOOK 
OF 
‘‘ f 
jph usi cal 
MINERALS, FOSSILS, RARE CHEMICALS, etc., 
fTz - 
FOR THE USE OF 
$dljool$, lAdtofieg, 
HOSPITALS, LABORATORIES, ASSAYERS, DENTISTS, PERFUMERS, 
CHEMISTS, DRUGGISTS, PHYSICIANS, &c., &c. 
IMPORTED OR BY 
■* B. BHWlAMIlh 
No. IO Barclay Street, 
Tlireo doors "West of tJae Astor House, 
YORK. 
SOLE AGENT FOR 
Ward’s Plaster Casts, Trommsdorff’s Pure Chemicals, &c., &c. 
1872. PREFACE. 
In response to the oft repeated and urgently pronounced requests 
of my large and generous constituency, I have much pleasure in 
presenting my first Catalogue to the kind perusal of themselves and 
the public. 
From the nature of the work it will, I am sure, without any 
further proof, be admitted that a large outlay of money, and an 
immense expenditure of time, have been demanded. Very many of 
the illustrations now appear for the first time in this country, and most 
of the representations have been drawn from the objects themselves. 
The work has, consequently, been delayed far longer than was 
intended, and now, although the utmost care has been taken, 1 
should not like it to be received as perfect. Doubtless some inaccu- 
racies have crept in unawares, but these, I trust, will be fount 
slight, and unimportant in character, and will, in consideration 
the amount of work involved in the compilation, be gently criticiz 
The classification of the articles will be, as far as possi' 
alphabetical; and, for the further convenience of those using Cie 
Catalogue, an Index is added. In this the articles are, without any 
regard to their uses, arranged alphabetically, with a number an- 
nexed, which refers to the page upon which a description of the 
article may be found. 
It is well known that in apparatus which is imported, unimpor- 
tant variations in form are always liable to be found. In this respect, 
it will always be my endeavor to secure the style which shall contain 
the latest improvements, and be the most effective in operation. 
My bottles are all made on my own forms, and I can confidently 
give a guarantee that every article named in the following pages 
will be in every way as represented. 
In conclusion, I beg to thank those who have so generously sup- 
ported me in the past, and to express a hope that this work will be 
found useful in our laboratories and factories, and indeed in the 
hands of any person who may refer to it. 
E. B. B. 
10 Barclay St., N. Y., 
July, 1872. New York, July 1st, J876. 
ERRATA. 
The following corrections should be made in my Catalogue of 1872. 
On page 6. No. 1252, for $3.50 read $5.50. 
“ 16, 17 & 18, “ 1869-1398 for Becker & Son’s Balances read Troem- 
ner’s and see new chemical list for cor- 
rected prices. 
“ 18, “ 1401, 3 in. for $1.50 read $2.50. 
“ 18, “ 1401, 3i£in“ 2.00 “ 3.50. 
“ 18, “ 1401, 4 in. “ 3.00 “ 4.50. 
“ 21, “ 1431, in nests of 1-12, per nest, $4.50. 
*• 23, “ 1453, pints .90. 
“ 27, “ 1501, for 22 oz. read 32 oz. 
“ 28, “ 1515, strike out 3 and 6 oz. sizes. 
“ 30, “ 1528, 2 gits., $2.25. 
“ 35, “ 1602, for $1.25 read $1.00. 
1603, for 1.75 “ 1.50. 
1604, for 1.35 “ 1.25. 
1606, with star 25 cents extra. 
1607, for $2.75 read $2.25. 
“ 40, “ 1670, for 1.00 “ 1.50. 
“ 49, “ 1780, should read $40. 
52, “ 1810, “ “ unmounted instead of mounted. 
56, “ 1869, prices are per dozen, instead of single. 
59, “ 1890, should read perf. cover/orgas reduction tube. 
63, “ 1948, 50 cc, for $1 40 read $1.50. 
“ 100 “ “ $2.00 “ $2.25. 
“ 200 4‘ “ $2.25 “ $2.50. 
“ 250 “ “ $2.50 •“ $3.00. 
65, “ 1975, is of the new form, having a glass shelf to 
support the triangle. 
“ 69, “ 2024, % gall. $10.00. 
“ 2025, 1 gall., for $14.00 read $16.00. 
“ “ 2 gall., for $19.00 read $20.00. 
77, “ 2120, for Tangent read Coulomb Torsin. 
“ 83, “ 2177, should read $5.50 to $9.00. 
“ 91, “ 2253 a, Filter Patterns, per set, 60c. 
“ 92, “ 2276, 1 oz. single piece, .10. 
2276, 2 “ “ “ .12. 
2276, 4 “ “ “ .15. 
2276, 6 “ “ “ .20. 
2276, 8 “ “ “ .25. ; 
2276, 12 •* “ “ .27. 
2276, 16 “ “ “ .30. 
2276, 24 “ “ “ .35. 
2276, 32 “ “ “ .50. Ou page 93 No. 2280, 4 oz. single piece .25. 
8 “ “ “ .30. 
16 “ “ “ .40 
32 “ “ “ .60. 
94 “ 2301, instead of German silver point read file on 
handle, „ 
96 “ 2323, instead of 1 oz. read 8 oz. 
“ “ 18 oz. “ 16 oz 
102 “ 2365a, Fletcher’s gas furnace, 50 burners, for 
smelting iron and other metals, $30.00. 
“ 103 “ 2375, read $45.00. 
104 “ 2382, strike out % gall. size. 
“ 106 “ 2397, for $7.50 read $9.50. 
123 “ 2604, for $3.00 read with swivel $4.50. 
127 “ 2644, strike out words and wire. 
2645, strike out ditto under and wire, and for $3.25 
read $3.75. - 
“ “ 2648, for $4.00 read $5.00. 
“ 129 “ 2693, for $2.50 read $3 00 
“ 136 “ 2838, for $1.50 to $2.50, read $2.50 to $5.50. 
“ 145 “ 2953, read $1.75. 
“ “ 2954, read $2.50. 
“ “ 2955, read $4.00. 
“ 148 “ 2993, for $1.50 read $2.00. 
“ ‘ ‘ 2994, for $1.50 read $2.00. 
149 “ 3001, pi ic< s are per doz. and not per single piece. 
‘‘ 3002, prices are per doz. and not per single piece. 
152 “ 3040, 1 pint, $3.50. 
153 “ 3057, for $9.00 per lb. read $5 00. 
159 “ 3147a, Spoons, Blowpipe, of ivory, each 40c. 
“ 165 “ 3227, for $1.50 read ,75c. 
“ 169 “ 3306, for $4.00 “ $10.00. 
170 “ 3318a, Tips, Blowpipe, brass, each ,10c. 
“ solid platinum, each .75c. 
“ 177 “ 3408, 6 in. $5.50 per doz. 
178 & 179 Nos. 3417 to 3444, for Becker & Sons’ weights 
read Troemner’s. See new chemical list for 
corrected prices. 
181 Chemicals, see new price list. 
207 No. 3477, for $7.00 read $10.00. 
“ “ 3478, for $12.00 read $15.00. 
207 “ 3479, for $3.00 read with swivel $4.50. 
211 “ 3485, read series of nine minerals and strike out 
No. 10.—Diamond. 
“ 211 “ 3488. for $ 6.00 read $10.00. 
“ 214 “ 3501; “ 10.00 “ 12.00. 
“ 241 “ 3593, “ ' 4.00 “ 6.00. 
“ 250 “ 3667, “ 2.50 “ " 7.50. 
253 chemicals, list of, for 101 read 181. 
’£. B. BENJAMN, 
10 Barclay Street, N. Y. ERRATA. 
During the printing of this book the following prominent errors were 
discovered: 
On page 52, No. 1801, for .75 read $1.75. 
“ 52, “ 1808, “ drip read dip. 
“ 53, “ 1815, “ frictional read fractional. 
“ 63, “ 1952, “ gramme read cc. 
and for the prices $1, $1.15 and $1.25 each. 
“ 72, “ 2054, The price is $20.00. 
“ 75, “ 2079, for $9 read $6. 
“ 79, “ 2142, “ $6 read $5. 
“ 112, “ 2458, “ $35 read $30. 
“ 119, “ 2557, “ actual measure read actual measures. 
“ 121, “ 2586, “ $1.50 read $2. 
“ 125, “ 2635, “ guaged -read gauged. 
“ 126, “ Illustration, No. 6241, read 2641. 
“ 127, “ 2647, “ 10 in. $2.50 read $2.00 
“ 128, “ 2675, The price is $2. 
“ 169, “ 3304, for $4.00 read $3.50. 
“ 171, “ 3343, “ $1 read $100. 
“ 171, “ 3344, “ 50 cts. read 40 cts. 
“ 177, “ 3401, The price is. $2.00. 
“ 185, “ Alcohol ammoniated and amylic, for gal. read lb. 
“ 215, “ 3505, for $t0 read $15. 
“ 215, “ 3508, “ $15 read $20. 
“ 250, “ 3667, “ $2.50 read $5.00. 
“ 259, “ Lippincott’s vapor index, for 77 read 177. 
N. B. Prices of Becker’s Balances and Weights are advanced about 10 per 
cent, from prices in this Catalogue. NOTICE 
The “ Albertype ” of a portion of my lower show-room, exhib- 
ited in the front of this Catalogue, was prepared by Mr. E. Bier- 
stadt, of this city, expressly for this work. 
The prices placed against the several articles in the following 
Catalogue are for United States legal tender, and are arranged upon 
so low a scale that net cash payments will be required for single 
pieces, except when otherwise agreed. These prices are, of course, 
subject to alterations, according to the values of crude materials 
and labor, and to the fluctuations in the foreign markets. For ex- 
ample, I am already advised of a -prospective advance on Becker’s 
balances and weights at the beginning of 1873, amounting to about 
10 per cent, on his prices in this catalogue. 
The charges of packing and shipping must, of course, be borne 
by the purchaser; and, in the case of chemicals, unless otherwise 
directed, these will be put into bottles and suitable packages, the ex- 
pense of which will be added to the cost of the materials themselves. 
Damages occurring by breakage or otherwise, in transitu, are 
never entertained in this business, nor can claims for deductions of 
any kind be allowed, unless notice of the same be given within six days 
of the receipt of the goods. In every case the signed receipt for ar- 
ticles in good order will relieve the supplier from all responsibility. 
In ordering goods, it is desirable that full shipping directions 
be given, as otherwise the selection of route will be considered as 
left to my own discretion. The fullest description of goods is also 
solicited, particularly when (as may be done) reference is made to 
any well known foreign catalogue. 
Having engaged the services of an experienced glass-blower, 
numerous styles of small apparatus, not specified in this Catalogue, 
can be well and expeditiously manufactured. When such are re- 
quired, it is necessary that the directions contain carefully prepared 
drawings and accurate dimensions. 
All kinds of apparatus can be carefully and accurately repaired 
on the premises by experienced workmen. 
Valuable apparatus, imported specially .to order, for moderate 
terms, on commission. When such are imported for scientific insti- 
tutions, they are free of duty. 
The large outlay of money incident to the publication of this 
work compels me to make a charge of $1.50 for each copy. This 
will partially cover expenses, and will, I am sure, be cheerfully paid 
by any who desire to consult the work. 
E. B. B. Entered according to Act of Congress, in the year 1872, 
By E. B. BENJAMIN, 
In the office of the Librarian to Congress, at Washington, D. 0. CATALOGUE. 
For numbers 1 to 1,248 reference should be made to the Cata- 
logue of Dr. II. A. Ward’s Casts of Fossils. This collection con- 
tains accurately formed models, and embraces all that has been 
discovered in reference to the Animal Kingdom, in its various sub- 
divisions of Vertebrates, Articulates, Mollusks, Radiates, and Pro- 
tozoans. Full descriptions will be found in the Catalogue, which, 
as a work of reference, should be in everybody’s library. 
Dr. Ward having paid me the compliment of making this estab- 
lishment a special, and indeed, independent of his factory, the only 
depot where his casts can be obtained at the manufacturer’s prices, 
orders are earnestly solicited for these valuable additions to cabinets 
and college col1 ections. The specimens are well arranged and classi- 
fied for inspection, and can be supplied singly or in series. 
Special attention is called to these casts, and a cordial invitation 
is extended to all who may feel a desire to inspect them. The 
extraordinary energy and ability displayed by Dr. Ward, in secur- 
ing and collecting, from the most reliable sources, these remarkable 
specimens of past ages, is undoubtedly entitled to the warmest 
encouragement and earnest support on the part of his fellow 
countrymen. His depots, established in London, and on the con- 
tinent of Europe, are already giving him important evidence of the 
appreciation in which the people of those countries hold his success- 
ful endeavors for the advancement of science, and it is earnestly 
hoped, and indeed confidently believed, that as soon as it shall be 
generally known that a depot has been established here, the people 
of the United States will also extend to the Doctor substantial 
tokens of their approbation. 
Professor Owen, in his popular work on a National Museum of 
Natural History, says: “ A fossil bone, and a colored plaster cast of 
it, are not distinguishable at first sight—scarcely by sight at all. 
The artificial junction of a series of casts of the bones of an unique 6 
E. b. benjamin’s descriptive catalogue 
fossil skeleton, produces a result equivalent, for all the purposes of 
public exhibition, to the articulated skeleton itself. Thus, every 
capital in Europe, the public museum of each civilized community, 
may show to the people the proportion of the creatures of former 
worlds, that science has so restored.” 
PRICES IN CURRENCY. 
1248a.—Absorptiometer,Bunsen’s, for mea- 
suring the absorption power of gases. 
$50.00 
1249. —Acetometer, Otto’s, of glass on wood 
foot, for indicating the per centage of an- 
hydrous acid in vinegar, acetic acid, &c.; 
graduated 0 to 12 in fourths. $1.50 
1250. —Acetometer, accompanied with hy- 
drometer for liquids lighter than water, 
thermometer, and two ground stoppered 
1252 
1253 
1248a 
bottles, one containing test solution, the other solution of lit- 
mus, complete in leather case. $4.00 
1251. —Acidimeter, according to Fresenius, for testing nitric 
acid. .60 
1252. —Acid Anhydrous Phosphoric. Apparatus for burning 
phosphorus in oxygen. $3.50 OF CHEMICAL AND PHYSICAL APPARATUS. 
7 
1253. Acid Bottle, French, having an extra tight ground stop- 
per, extending to the bottom of the bottle, especially used for 
testing coins, minerals, &c. 
y 1 2 oz. 
.25 .30 .35 each. 
1254. —Acid or Cobalt Bottles, of Bohemian 
glass, having long stoppers, covered with 
ground caps. 
| 1 2 4 oz. 
.50 .63 .75 .90 each. 
1255. —Acid Brushes, of fine spun glass. Each, .50 
1256. —Acid Carbonic, liquified under low temperature, in 
sealed glass tubes, enclosed in velvet-lined leather case. 87.50 
1257. —Acid Carbonic, apparatus, 
Dr. Scheibler’s, for determining 
the quantity of carbonic acid in 
bone ash. 835.00 
1258. —Acid Carbonic, apparatus; 
the same as above, American. 
825.00 
1259. —Acid Carbonic. Dr. Scheib- 
bler’s new apparatus for quantita- 
tive volumetric analysis of car- 
bonic acid, 
845.00 
1260. —Acid Carbonic, generator, 
with lead tripod. 
11 inches high, . . *. 89.00 
14 “ .... 12.00 
1261. —Acid Carbonic, generator, 
French make, very strong and 
heavy, with extra tubes, cocks, 
&c. 825.00 
1254 
1262 
1257 
1262.—Acid Dishes, of Meissen porcelain, for freezing in vacuo, 
&c., with three partitions, five inches. Each, $1.25 8 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
1263.—Acid Dishes, of Berlin porcelain, with six partitions. 
5j in. 
$1.15 1.30 1.50 each. 
1263 
1260 
1264 
1264. —Acid Dishes, of glass, plain, on three feet. 
3 3| 3f in. 
.50 .60 .75 each. 
1265. —Acid Hydrochloric apparatus, Hoffman’s, for decom- 
position of Hydrochloric acid into hydrogen and chlorine, 
mounted on stand. $6.00 
1266. —Acid Hydrochloric. The same apparatus as above, but 
unmounted. $2.50 
1267. —Acid Hydrochloric apparatus, Hoffman’s, unmounted, 
for showing that the gas evolved from this acid contains equal 
volumes of chlorine and hydrogen. $3.00 
1268. —Acid Jars, for preparing test solutions in volu- 
metric analysis, 1000 grains. $2.25 
1269. —Acid Jars, accurately graduated, with double 
numbers, which can be read up or down. 
100 200 300 400 500 1,000) 
in. 1 2 2 5 5 10 f C'c' 
$2.00 2.50 3.00 3.50 3.75 4.00 each. 
1270. —Acid Jars, on brass foot, registering 0 to 12. Each, .75 
1271. —Acid Measures, of porcelain, with lip. 
2 4 8 16 32 oz. 
.30 .50 .90 1.50 1.80 each. 
1269 OF CHEMICAL AND PHYSICAL APPARATUS. 
9 
1272. —Acid Measures, of gutta-percha, conical, capacity 1 litre. 
Each, $2.00 
1273. —Acid Measures, cylindrical glass. 
1 litre, 2 litres, 
$3.00 3.50 each. 
1274 
1274. —Acid .Sulphuric, apparatus for making. $3.00 
1275. —Acid Phosphorus, apparatus for making. $2.50 
1276. —Acid Pipettes, with rubber ball. .75 
1277. —Acid Syphon, of glass, with suction tube. 
9 12 18 24 in. 
.35 .40 .60 .75 each. 
1278. — Acid Syphon, with 
Mohr’s spring clamp, glass 
tip, and gutta-percha connec- 
tion. Each size add .50 
1279. —Acid Syphon, of glass, 
with suction tube and glass 
stop-cock, instead of Mehr’s 
spring clamp, 18 in. 
$1.50 
1280. —Acid Syphon, of glass, 
with delivery tube united by 
rubber. $1.50 
1281. —Adapters, French, bent, with ring around the larger end. 
1 2 4 8 oz. 
.08 .10 .15 .25 each. 
1277 
1281 
1282 10 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
1282.—Adapters, French, straight, with ring around the larger 
end, 16 oz. capacity. Each, .50 
1283 —Adapters, of Bohemian glass, bent for connecting retorts 
with receivers, width at larger end. 
1| 2i 3 in. ' 
.30 .35 .50 .70 each. 
1284. —Adapters, straight, of Bohemian glass, 
1| 2i 2| 3 in. 
.25 .30 .45 .65 each. 
1285. —Adapters, of Bohemian glass, 5 feet long. Each, $2.50 
1286. —Adapters, of vulcanized rubber, 10 inches long. Each, .50 
1287. —Agate Slabs, with mullers, highly polished, for grinding 
into fine powder materials and minerals requiring careful 
investigation. 
5| 5i 5| 6A 6| in. sq. 
$12.00 15.00 19.00 22.00 25.00 each. 
1288. —Air Cylinders, apparatus for $12.00 
1289. —Air Globes for weighing Gases. 
12 3 gall. 
$1.25 2.00 3.00 each. 
1290. —Air Thermometer Tubes, bulb 2 in. dia. Each, .25 
1291. — “ “ “ “ 3 inches. “ .50 
1292. —Alcoholometry. Dr. Pyle’s Book, containing tables with 
calculations for estimating true alcoholic per centages according 
to McCulloch. .75 
1293. —Alcoholometers, U. S. Standard, in chamois-lined 
leather cases, with thermometer scale on hydrometer, and extra 
thermometer, comprising (with the book above referred to) the 
complete apparatus for dealers in proof spirits, &c., according 
to U. S. C. standard for exact estimates. Each, $7.00 
1294. —Alcoholometers, Tralles & Richter’s, in leather cases. 
Each, $3.50 
1295. — “ “ “ in chamois-lined 
leather cases, with jar and thermometer. Each, $6.00 
1296. —Alcoholometers, Tralles’s, with jar and thermometer, in 
chamois-lmed leather cases. Each, $5.00 
1297. —Alcoholometers, TJ. S. Standard, with thermometer 
attached, and most accurate proof scales in paste-board cases. 
Each, $3.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
11 
1298. Alcoholometers, U. S. Standard, Tralles & Richter’s 
scale, with thermometer, as above. Each, $2.20 
1299. —Alcoholometers, without thermometer, in round, paste- 
board cases. Each, $1.00 
1300. —Alcoholometers, Gay Lussac’s centesimal scale, in paste- 
board cases. Each, $1.50 
1301. —Alcoholometers, Gay Lussac and Cartier’s, in tin boxes. 
Each, $1.00 
1302. — “ graduated 15 to 95, No. 204. Each, .50 
1303. — “ Cartier’s, French, in round cases. Each, .75 
1304. — “ French, in pasteboard boxes, graduated 0 
to 40; very delicate and correct instruments. Each, $1.25 
1305. —Alcoholometers, French, in tin boxes, graduated 10 to 40 
Each, .50 
1306. “ in tin cases, smaller size (No. 1,093). 
Each, .25 
1307. —Alcoholometer Jars, with glass feet, according to size. 
Each, .50 to .75 
1308. — “ “ with brass feet. Each, .90 
1309. —Alembics, glass, Bohemian, with loose head and tightly 
ground j oint3. 
8 oz. Pints. Quarts. 
$1.30 1.80 2.50 each. 
1309 
1313 
1310. —Alembics, glass, German, with fast heads, tubulated, 
quarts. Each, $1.50 
1311. — “ porcelain, with loose heads, 12 oz. “ $1.50 12 
E. b. benjamin's descriptive catalogue 
1312. —Alembics, Salleron’s, for testing wines and saccharine alco- 
holic liquors, with heating apparatus. Each, 15.00 
1313. —Alembic, Salleron’s, for testing the quantity of alcohol 
in wine and spirits. Large size. $25.00 
1314. —Alembic Stoneware, for sublimations, &c., all sizes, from 
$3.00 to $7.50 
1315 
1316 
1317 
1315. — Apparatus, for the determination of carbonic acid in 
carbonates, Wetherell’s form. Each, $1.25 
1316. — “ Fresenius & Wills’s form (No. 450) Ea. .65 
1317. — “ Berzelius's “ ( “ 498) “ .75 
1318. “ Rose’s “ ( “ 460) “ 1.25 
1318 
1321 
1322 
1324 
1325 
1319. — “ Mohr’s form (No. 503) Ea. $1.25 
1320. — “ Fresenius’s “ ( “ 451) “ .75 
1321. — “ Schrodtter’s “ ( 456) “ 2.00 
1322. “ Geissler’s “ ( “ 455) « 1.50 
1323. — “ Fresenius’s new form ( “ 452) “ 1.50 
1324. — “ Schaffner’s “ ( “ 453) “ .75 
1325. “ Kipp’s “ ( “ 462) “ 1.75 
1326. “ Kipp’s « ( “ 461) “ 1.75 
1327. “ (( “ ( « 464) “ 1.65 
1328. “ Mohr’s « ( “ 467) “ 1.50 01’ CHEMICAL AND PHYSICAL APPARATUS. 
13 
1329.— Apparatus, Erdmann’s new form (No. 465) Ea. $1.50 
1329a.— “ Bunsen’s “ 1.75 
1329 
1329a 
1333 
1334 
1335 
1330. —Alkalimeter,«Pescroizille’s, of glass, mounted on wood foot 
graduated from 0 to 100, in ones. $2.00 
1331. —Alkalimtter, Mohr’s, with glass foot, graduated, 0 to 100. 
$1.75 
1332. —Alkalimeter, Urcfs, with glass foot and stop-cock, and 
channel stopper for pouring liquids. $2.00 
1333. —Alkalimeter, L eslie’s, with glass foot, cork-stopper, and 
two pipette tubes. $1.50 
1334. —. Dtto, Descroizille’s, on glass foot, graduated 0 to 100. 
$1.50 
1335. “ Gay Lussac, with wood foot. 
25 c. c. 50 c. c. 100 c. c. 
i I 1 
$1.75 2.25 2.50 each. 
Alkalimeters not mounted on stand. See Burettes. 
1336. —Ammonia. Hoffman’s apparatus for decomposing am- 
monia. $6.00 
1337. —Ammonia. Apparatus for ascertaining the exact propor- 
tions of hydrogen and nitrogen in ammonia. Unmounted, $3.00 
1338. —Ammonia carboys, for concentration of the stronger acids 
and ammonia, 2 necks, with delivery tube, German, glazed out- 
side, of 200 litre capacity. $50.00 
1339. —Ammonia carboys; two of the above, including connec- 
tion. $100.00 14 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
1346 
1339 
1351 
1340. —Ammonia Chloride, apparatus for illustrating the for- 
mation of Chloride of Ammonia, by condensing the vapors of 
hydrochloric acid and ammonia. This consists of a gallon glass 
flask, to which are attached two tubes by means of an India- 
rubber connection. 82.50 
1341. —Annealing Cups, of porcelain. .25 
1342. —Ditto, of porous clay. Per doz., 82.50 
1343. —Analysis, apparatus for organic analysis, according to Lie- 
big, complete. 845.00 
1344. —Anvils for Blowpipes, small, with square ends. Each, .75 
1345. —Ditto, large. “ 81.03 
1346. —Ditto, round, with hammer, etc., complete. “ 10.00 
1347. Aphlogistic or Flameless Lamp, with platinum sponge 
and glass wick-holders. Each, .75 
1348. —Aphlogistic Lamp Sponges, with glass wick-holders. 
Each, .40 
1349. —Arsenic, Marsh’s apparatus for the detection of, unmounted. 
Each, .50 
1350. —Ditto, mounted. 84.25 
1351. —Ditto, brass stopcocks for the above. Each, 81.25 
1352. —Ditto, Fresenius’s apparatus for the detection of. 5.00 
1353. —Ditto, Mitscherlich’s ditto. 3.00 
1354. —Arsenic Plates, plain. 
No. 000 00 0 1 2 
.12 .15 .25 .30 .40 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
15 
1352 
1355. —Arsenic Plates, Meissen, with Lips. 
Small, medium, large. 
.35 .40 .50 each, 
1356. —Arsenic Tubes, five different forms. Per doz., .50 to .75 
1357. —Ditto, three kinds for sublimation. Per doz., .75 
1358. —Aspiration Apparatus, consisting of three bottles, 
mounted, in box, with suction and delivery tubes for inhaling 
the vapor of medicinal solutions. $2.00 
1359. —Ditto, ordinary. 1.50 
1360. —Aspirators, of glass, with brass stopcocks. Quarts, ea. 2.00 
1361. —Ditto, ditto, | Galls. “ 2.50 
1362. —Ditto, ditto, Galls. “ 3.00 
1363. —Ditto, Liebig’s. Each $1.50 to 2.50 
1364. —Ditto, of glass, with glass stopcocks. 
Litres | 1 2 4 8 
$3.50 3.75 4.75 6.25 9.50 ea. 
1365. —Aspirator Tubes. Each, .50 
Assay Apparatus, for the various articles 
used in assaying, such as basins, bellows, blow- 
pipes, crucibles, covers, cupels, dippers, roasting 
dishes, flasks, hammers, ingot moulds, muffles, 
scoops, stopcocks, tongs, &c. See their respective 
alphabetical positions. 
1366. —Atomizers, of glass. Each, .25 
1367. —Attachments, brass, for blowpipes. “ .75 
1368. Atropia Bottles. “ 50 
1357 
1368 16 
E. B. BENJAMIN’S cA-TALOGlE 
BECKER & SON’S BALANCES! 
1369. —No. 1. Assay Balance in French polished glass case, 
sliding frame counterpoised. Can be charged '25 grammes 
in each pan. Devotion of needlb on scale for 1 
milligramme. knives witl/agate beards. • $50.00 
1370. No. 2. Ditto, ditto. Wh/n loaded up 1 gramme in 
each pan, needier deviates 10 divisions on for 1 milli- 
gramme ; Ton pkrt of a milligramme is therefore to be seen. 
Steel knives Ayl th agate bea/ngs. \\ $72.00 
1373 
I5?o 
1371.—No. 3. Ditto, ditto, for up to 10 grammes in each pan. 
/ / / $72.00/ 
137a.—Ditto, with apparatus for Riefer. I 78.00 
1373. —No. 4. Analytical Balance for a charge/up to 100 
/ grammes ij{ each pan, in French polished glafe case, frdnt 
/ sliding frame counterpoised. All bearings steel; sensible to 
1 | milligramme with its full cliui'ge.) I $§5.00 
1374. —No. 5. Dittel for a clia Cgeyip to 100 grainmes in each 
pan, in fine 'French polished‘xglass case, front/ sliding'" frame 
counterpoised. All bea-rhigs agfyte planes, witlf new improved 
arrangement for arresixifpans and beam; sellable to “A milli- 
% gramme with its full charge. Pans, 23 inches iiameter. Pro- 
vided with apparatus for specific gravity ridlr and weighing 
tubes, being divided iii‘f-pftI^s milligrammes. ; $77.00 
1375. —No. 6. Ditto, for a charge up to 200 grammes in each pan, E3. 13. BEUNTJ-A-lVEIlSr, 
No. 10 BARCLAY STREET, - - NEW YORK, 
MANUFACTURER’S AGENT FOR 
IIKMtY TUOIAIAER’S 
STANDARD BALANCES AND 
Established i840, and used by all the U. S. Mints and Assay Offices, and by the Canadian Government. 
BALANCES OF PRECISION. 
Assay Balances. 
Chemical Scales. Fig. 23. 
For General Weighing. 
Analytical Balances. 
On polished box, with drop lever, especially constructed 
for laboratory use. Including weights. 
No. Diam. of Pan. Ream Capacity. 1 Price. 
1. 5 in. 9 in. 32 oz. $15.00 
2. 4 “ 8 “ 16 “ 12.00 
3. 3 “ 7 “ 8 “ 10.00 
Pans can be suspended by chains if desired. 
No. 1. In French polisned glass case, beam resting on 
agate bearings. Sensibh to 1-20 milligrammes. „ 
Price, ; - - - - - $55 00 
No. 1. Analytical Balance, capacity 200 grammes in 
each pan, in fine polished glass case, beam divided tn 1-10 
milligrammes, sensible to 1-20 milligrammes. All agate 
bearings, with improved arrest for pans, ami apparatus 
for specific gravity, &.C., &c. 
3 in. pans. Beam 14 in. 
Price, $105,00 
No. 2. Analytical Balance, in fine polished glass cage, 
capacity 100 grammes in each pan. Beam, divided in halt 
parts of milligrammes. Sensible tc 1-10 milligrammes, 
with apparatus for specific gravity. All bearings agate. 
2% in. pans. 12 in. Beam. 
Price, $86.00 
No. 3. Analytical Balance, in French polished mahog- 
any case, with counterpoised sliding door. Capacity 2000 
grains, sensible to 1-100 grain. Steel hearings, movable 
in. pans, 10 in. beam. 
Price - • * - • " $40.00 
No 4. Same Balance as No. 3. has attachment for 
rider, ami pan arrests. Beam graduated to one mill! 
gramme. 
Price, t-50-00 
No. 2. In French polished glass ease. Is arranged with 
rider apparatus and pan arrests. Open beam, divided in 
1-10 milligramme; beam resting on agate planes. Needle 
shows ten divisions for on j milligramme. 
Price, - - • - - - $80,00 
Weights of Precision. 
In tine velvet lined polished block. Weights lacquered 
and adjusted with the greatest care and precision. 
1 Pla tinum Gramme to 1 Mili., $ 6.00 
1 “ “ 1-10 Mili.. - - 7.00. 
10 Gramme to l Mili., .... 7.50 
10 “ 1-10 Mill., .... 8.59 
50 “ 1 Mili. 3 Riders, - - - 10.50 
100 “ 12.00 
100 “ 1-10 Mili. 3 Riders. - - 13.00 
200 “ 1 Mili., - - - - 16.00 
Gold Assay Weights, - - - - 7.00 
All Riders weigh 10 Mili. unless otherwise ordered. 
GRAINS. 
10 Platinum Grains to 1-10 Grain. - • $5.00 
10 “ * ’ 1-100 Grain, - - 6.00 
10 “ “ 1-1000 Grain, - ■ - 7.00 
100 Grains to 1-100 Grain, - - - 7.00 
HOO Grains to 140 Grain, 3 Riders, - - 10.00 
1000 Grains to 1-100 Grain, 3 Kiders, - 1100 
1000 Grains to 1.1000 Grain, 3 Ride.rs. - 12.00 
4 oz. Troy to 1-10 Grain, - - - 8.00 
Assay Ton Weights, 4 A. T. to 1-20 A. T., - 6.60. 
Analytical Beales. Fig. 22. 
Troemner Specific Gravity Scale. 
■ 
; For weighing Ores, Min ra>ls, Gohl ami Stiver Coin, 
Jewelry, Chemicals, &e., &c. 
On fine Polished Mahogany Box, with drawer. Lac- 
quered Beam, with box ends, adjusting screws, movable 
pans, ivory Indicator. Sensible to :-20 grain. Price does 
| not include weights. 
j No. Length <>t Beam. D’a a. of Pan. Capacity. Price. 
’ 1, 14 in. 6 in. 26 oz. $24.00 
2. 10 “ ■»!$ “ 16 “ 18.00 
j 3. 3% “ ' '3 - 8 “ 16.00 
Pans can be suspenqed by chains if desired.. 
Gramme Weights. 
In Mahogany Block. 
500 Grammes, to 1 Gram,. - - - $8.00 
500 Grammes, to 1 Oenti., - - - - 12.00 
500 Grammes, to 1 Mili., - - - - 14.00 
1 Kilo, to I Gram., - • • - 12.00 
1 Kilo, to 1 Centi.,16.00 
1 Kilo, tml-Mill., 
1 oz. Troy to 1-10 Grain, - - - . - 4.00 
o >. •• •• . - - - 5.00 
.< .... 7.50 
*w .. .. .. . . ... . 10.00 
Constructed after the plan of Dr. Mohr. 
Price complete, * ' *20‘ OF CHEMICAL AND PHYSICAL APPARATUS. 
17 
in fine French polished glass case, front sliding frame counter- 
poised. , All bearings agate planes, with new improved arrange- 
ment foi' arrest of pans and beam; sensible to Ar milligramme 
with its full charge. Provided with arrest for pans, Tider, ap- 
paratus for specific gravity and weighing tubes. B$am divided 
in tW parts of jhilligrammes. XPans$ inches diameter. $95.00 
1376.—/No. 8. Analytical xdr'tto, ditto, with adjusta- 
ble/shelf for Supporting beaker with ww when/taking specific 
gravities. \ A \ $107.00 
1377<—No. 9./ Ditto, for 500 gramjnes in each pan; sensible to 
Ao part of* a milligramme with its 'frill charge. Provided with 
arrest for pans, rider, apparatusftrc^specificgravity and weigh- 
ing tub/s. Pans 4 inches diameter. F $120.00 
1378. —Ng. 10. Ditto, ditto, with adjustable/shelf for supporting 
/ with water when gravities. > $132.00 
1379. —No. 11. Balance for scientific us/, for a change up to 
/ 100Q grammes in eahh pan; sraisille to * milligramme with its 
f fuiy charge. Glass case as thbse befqp. All bcih-ings agate 
/ planes. Provided with arrest for pan® rider, adjustable shelf 
foi’ specific gravity, etc. Pans 5 inch® diameter, y $175.00 
1380/—No. 12. Ditto, in glass case, for a charge up & 10 kilos in 
dach pan: sensible to 1 milligramme with that charge. Pans 
i inches diameter. —' J $375.00 
becker’s prescript!outbalances. 
1381. —No. 1. Prescription J on French polished box, 
with drawer, drop lever, hgws aiil movable pans. Can be 
charged up to 2 ounces in bach pai ; sensible to -A grain. 
x ■ $1( 00 
1382. — Ditto, in Frencji polished g iss 
case, with counterpoised front slid ng 
frame. $2( 00 
1383. —No. 2. Balance for 5 ounces in 
each pan, on French polished 1 ox 
'with drawer, provided with d op 
lever, bows and movable pans; sei si- 
ble to A grain $13 50 
1384. —No. 3. Ditto, for 10 ounces in 
each pan, on French polished box with drawer, provided with 
1381 18 
E. B. benjamin's descriptive catalogue 
drop lever, bows, movable pans, set screws and level; sensible 
to /a grain. $20.00 
1385. —Balance for 10 ounces in each pan, in glass case, with 
sliding frame ; sensible to Ar grain. $28.00 
1386. —No. 4. Ditto, for 20 ounces in each pan, on French polish- 
ed box with drawer, provided with eccentric for lifting, bows, 
\ movable pans, set screws and level; sensible to w grain. $25.00 
13$7.— Ditto, ditto, in glass case, with counterpoised sliding 
Yyame; sensible to Ar grain with that charge. $38.00 
1388V -No. 5. Ditto, ditto, for 50 ounces in each pan; sensible to 
% with that charge. $32.00 
1389. 3 $me, in glass case; sensible to | grain. $50.00 
1390. —Now.6. Ditto, ditto, for 100 ounces in each pan; sensible 
to | grain with that charge. $45.00. 
1391. —Same, ih glass case; sensible to | grain. 70.00 
1392. —No. 7. Ditto, ditto, for 300 ounces in each pan; sensible 
to 1 grain with tmd charge. $60.00 
1393. —No. 8. Bullion and Specie Scale, carrying 500 ounces 
in each pan; sensible to* ,1 grain with that charge. All bear- 
4 ings plane, with new imprbyed construction for the arrestation 
of the beam. Proyided witlXarrest for pans, set screws and 
level. / $150.00 
1394. Ditto, ditto,. In class case; sensibly to | grain. 200.00 
1395. No. 9. Ditto, ditto, for 2000 ounces in each pan; sensible 
to 2 grains With that charge. $185.00 
1396. —Same, in glass case ; sensible to 1 grain. 275.00 
1397. —No. 10. Ditto, ditto, for 3500 ounces in eahhpan; sensible 
to 2 grains with that charge. $500.00 
1398. Same, in mahogany glass case, French polished, with coun- 
/ terpoised front sliding frame; sensible to 1 grain with Diat 
charge. $650.00 
1399. Balances for Druggists and Assayers, “weighing in,” on 
marble slab, carefully adjusted. Each, $15.00 
1400. —Ditto, ditto, wooden foot and drawer for tools and weights. 
Each, $10.00 
1401. —Ditto, of horn, with beam. 
Pans.—Size, 3 3| 4 in. 
Price, $1.50 2.00 3.00 each. 
1402. —Ditto, of brass, small. Each, $5.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
19 
1400 
1401 
1405 
1411 
1403. —Balloons, of Collodion, extremely light and thin, for 
ascension, with hydrogen gas. 
Size, 10 12 in. 
Price, .75 $1.00 each. 
1404. —Balloons, French Bubber. Each, .75 
1405. —Ditto, Goldbeater Skin, from $1.50 to $5. 
(These balloons, when not in use, should be kept in 
a close package, with a little camphor, to preserve 
them from insects. They should never be wetted.) 
Balloons, of Glass. See Air Globes. 
1406. —Barometer, for use in schools, usual form, 
from $3 to $15. 
1407. Barometer, Bunsen’s Syphon, graduated 
on both branches in millimeters, filled. $12.00 
1408. —Barometers, Aneroid, accurately adjusted; 
same as used in the University of Vienna. Each, $30.00 
1409. —Ditto, with Storm Glass. The rising of the milky sub- 
stance indicates approach of storm. Each, $3.00 
1410. —Barometer Tubes, 3 feet in length, sealed at one end. .50 
1411. —Ditto, with bulb, for use with mercury. Each, .75 
1412. —Ditto, including the mercury. “ $1.25 
1413. —Barometer Bulb Tubes. “ .50 
Basins and Dishes. See Crystallizing and Evaporating 
Apparatus. 
1414. —Basket of Lead, for holding pieces of zinc in hydrogen 
generators. Each, .50 
Batteries. See Electrical Apparatus. Baths, Eye, see E. 
1415. Beakers, of the very best Bohemian glass, thoroughly an- 
nealed, and of uniform thickness, for enduring extremes of 
1407 20 
e. b. benjamin’s descriptive catalogue 
temperature, of Berzelius’s usual form, in nests of 00 to 1, con- 
taining 1£ to 3 ounces. Per nest, .20 
1408 
Peb Nest. 
1416. —Beakers, in nests of 4,—00 to 2, containing | to 4 ozs. .35 
1417. —Ditto, ditto, 3,—1 to 3, 3 to 6 “ .40 
1418. —Ditto, ditto, 5,—0 to 4, “ 1| to 9 “ .65 
1419. —Ditto, ditto, 5,— 1 to 5, “ 3 to 15 “ .75 
1420. —Ditto, ditto, 6,—0 to 5, “ 1| to 15 “ .80 
1421. Ditto, ditto, 7,-0 to 6, “ 1| to 21 “ $1.10 
1422. —Ditto, ditto, 9,—0 to 8, “ 1| to 48 “ 2.00 
1423. —Ditto, ditto, 10,—0 to 9, “ 1| to 70 “ 2.25 
1424. —Ditto, ditto, 13,—0 to 12, “ 1| to 140“ 4.00 
(The capacities are approximate only.) 
1425. —Ditto, ditto, (singly). The capacities below, and dimensions, 
are approximate: 
NOS. 
HEIGHT. 
WIDTH. 
CONTENTS. 
PRICE, EACH. 
0 
2 
inch. 
11 inch. 
11 
ounce 
.06 
1 
21 
do. 
11 
do. 
3 
do. 
.09 
2 
3 
do. 
K 
do. 
4 
do. 
.12 
3 
3t 
do. 
2 
do. 
6 
do. 
.16 
4 
4 
do. 
21 
do. 
9 
do. 
.20 
'5 
4‘3 
do. 
21 
do. 
15 
do. 
.25 
6 
51 
do. 
3 
do. 
21 
do. 
.35 
7 
6t 
do. 
31 
do. 
33 
do. 
.40 
8 
71 
do. 
do. 
48 
do. 
.45 
9 
81 
do. 
4 
do. 
70 
do. 
.55 
10 
91 
do. 
41 
do. 
85 
do. 
.65 
11 
10 
do. 
5 
do. 
110 
do. 
.75 
12 
11 
do. 
51 
do. 
140 
do. 
.90 
1426.—Beakers, tall and narrow; French form, very thin, 8 in 
a nest. Nos. 1 to 8. Price per nest, $3.50 OF CHEMICAL AND PHYSICAL APPARATUS. 
21 
1419 
1422 
1424 
1426 
1435 
NOS. 
HEIGHT. 
WIDTH. 
CONTENTS. 
PRICE, EACH. 
1 
21 inch. 
inch. 
ounce. 
.25 
2 
3 do. 
2 do. 
2 do. 
.30 
3 
41 do. 
2| do. 
4 do. 
.40 
4 
5 do. 
21 do. 
6 do. 
.50 
5 
6£ do. 
3 do. 
16 do. . 
.60 
6 
8 do. 
3| do. 
24 do. 
.70 
7 
do. 
4 do. 
32 do. 
.80 
8 
10 do. 
4| do. 
gal. 48 oz. 
81.00 
1427. —Beakers, best Bohemian Glass, Berzelius’s form, extra wide 
nests, from Nos. 1 to 6, same size as Griffin’s lipped, full nests. 
Each, $1.75 
1428. —Ditto, very large, Nos. 10 to 13, nests of 4. “ 3.50 
1429. —Ditto, full nests of 15,—00 to 13. “ 7.00 
1430. —Ditto, singly. Each, .15 to 2.00 
1431. —Ditto, Griffin’s wide form, lipped. 
NOS. 
DEPTH. 
WIDTH. 
CAPACITIES. 
PRICE, EACH. 
1 
3 inch. 
2| inch. 
5 ounce. 
.15 
2 
do. 
2| do. 
8 do. 
.25 
3 
4 do. 
3 do. 
12 do. 
.30 
4 
4| do. 
3| do. 
20 do. 
.35 
5 
5 do. 
3f do. 
25 do. 
.40 
6 
5| do. 
4| do. 
40 do. 
.55 
7 
6| do. 
4f do. 
do. 
.60 
8 
7| do. 
5 do. 
do. 
.70 
9 
8| do. 
5| do. 
do. 
.80 
10 
9| do. 
6| do. 
do. 
.90 
11 
9f do. 
6| do. 
do. 
SI.00 
12 
10 do. 
7 do. 
do. 
1.10 
1432.—Beakers., ditto, ditto, nests of 3,—1 to 3. Each, .60 22 
E. B. BENJAMIN’S descriptive catalogue 
1437 
1438 
1441 
1442 
1443 
1433. —Beakers, Griffin’s wide form, lipped, nests, 4,—1 to 4, ea. .95 
1434. Ditto, 5,-1 to 5. Each, $1.35 
1435. Ditto, 6,-1 to 6. “ 2.00 
1436. —Ditto, glass, flat bottom, perpendicular sides, without rim, 
shallow (from 2 to 2f inches deep), nests of 4, small. 
Each, .75 
1437. —Ditto, nests of 9. “ $2.00 
1438. —Ditto, tall conical, with lip, 8 ounce capacity. “ .50 
1439. —Ditto, porcelain, egg shape, flaring mouth, useful in dissolv- 
• ing metals and acids. Each, .30 
1440. —Beale’s Quick Filter. -75 
1441. —Beehive, shelves. Small, 25c.; large, 75c. 
1442. —Bell Glasses, fiat knobbed. 
6 inch. 8 inches diameter. 
$1.25 1.75 each. 
1443. —Ditto, swelled, with knob. 
< 1 2 gal. 
$1.50 2.00 3.00 each. 
1444. —Ditto, open tops. 
fl 2 gal. 
$1.75 2.50 3.50 each. 
1445. —Ditto, French, knobbed, tall. 
pints. quarts. f 1 gal. 
.30 .60 $1.00 1.50 each. 
1446. —Ditto, American, tall. 
pints. quarts. fl 3 5 gal. 
.40 .75 $1.00 1.50 3.75 7.50 each. 
1447. —Ditto, French, tall, with foot, made to be reversed, for use 
with light and heavy gases or fluids, vase form. 
fl 2 gal. 
$1.50 1.75 2.75 each. 
1448. —Ditto, American, with small foot. 
f 1 If 2 gal. 
$1.25 1.50 1.75 2.50 each OF CHEMICAL AND PHYSICAL APPARATUS. 
23 
1444 
1445 
1449 
1451 
1452 
1453 
1456 
1449. Bell Glasses, tall, wide open top. 
pints. quarts. | 1 gal. 
.50 .75 $1.00 1.50 each. 
1450. —Ditto, with glass plate on top, extra. Each, .25 
1451. —Ditto, open mouth, for caps. 
quarts. | 1 gal. 
.75 $1.00 1.50 each. 
1452. —Ditto, with brass cap and stopcock. 
quarts. | 1 gal. 
$2.25 2.75 3.25 each. 
1453. —Ditto, accurately stoppered with fine ground emery. 
quarts | 1 gal. 
$1.00 1.50 1.75 each. 
1454. —Ditto, 16 oz., with hole in stopper, large enough to introduce 
a tube. .75 
1455. —Ditto, for hydrogen lamps, 8 oz. “ .35 
1456. —Ditto, open mouth, with tubulature at bottom, for use with 
Bunsen’s pump. 
pints. quarts. 
$1.75 $2.25. each. 
1457. —Ditto, with heavy emery ground mirror glass plate for the; 
bottom. 
pints. quarts. 
$2.75 3.25 each. 
1458. —Ditto, Bohemian, having the base stoppered with 
large ground glass stopper, • cut and polished on the 
bottom. 
4 8 16 32 oz. 
.30 .50 .75 $1.00 each. 
1459. —Ditto, open top, graduated in cubic centimetres. 
500 1,000 2,000 2,500 cc. 
$2.50 3.50 5.25 5.50 each. 24 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
1462 
1463 
1465 
1464 
1465 
1473 
1474 
1460. —Bell Glasses, with cap and. brass cock fitted. 
500 1,000 2,000 2,500 cc. 
$4.00 5.00 6.75 7.25 each. 
1461. —Ditto, fitted with glass globes, with brass cap, stopcocks, 
etc., 1 gal. Each, $6.00 
Bell-Shaped Gasometers. See Gasometers. 
1462. Bellows, hand. 
6 8 inch. 
.75 $1.00 each. 
1463. —Ditto, double action blast, for use with the foot. 
single air receiver. double. 
$4.00 6.00 each. 
1464. —Binding Screws, for connecting poles of Batteries, fancy 
styles. Each, .50 
1465. —Ditto, for connecting poles of batteries, plain. “ .25 
1466. —Binding Clamps, for Smee’s batteries. “ .75 
1467. —Ditto, for Bunsen’s smaller battery. Per sett, .75 
1468. —Ditto, for Bunsen’s larger battery. “ $1.25 
1469. —Bladders, hogs’. Each, .10 
1470. —Ditto, with brass neck. “ .60 
1471. —Ditto, with stopcock and plain bubble pipe. “ $2.50 
1472. —Ditto, for exploding gases. “ 1.00 
1473. —Bladder Pieces. “ .50 
Blast Lamps. See Burners. 
1474. —Blast Attachment, for blowpipe, brass. “ .75 
1475. —Blood, Circulating Apparatus, to illustrate the mode 
of. circulation of the blood through the veins. 
Small, $4.00 Large, $10.00 
1476. —Blowpipe Tables, best French make, with iron top, and 
drawer for tools, having brass discharge pipe with two nozzles. 
Each, $40.00 
1477. —Blowpipes, ox-hydric, small size. “ 5.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
25 
1475 
1476 
1478 
1478. —Blowpipes, compound, mounted on stand. Each, 87.50 
1479. —Blowpipe, ox-hydric, compound, on stand, with double 
stopcock. 810.00 
1480. —Ditto, ox-hydric, unmounted, very powerful. 15.00 
1481. —Ditto, for oxhydric or calcium light, carefully finished, with 
regulating screws. 20.00 
1481 
1491 
1482.—Blow-pipe, of glass. .25 
1483 .—Ditto, Black’s, conical, of japanned tin, with movable brass 
nozzle. .40 
1484. —Ditto, brass, jewelers’ form, 8 inch. Each, .25 
1485. —Ditto, ditto, with brass bulb. “ .75 
1486. —Ditto, brass, Berzelius’s form, short nozzle piece, and 
soldered platinum tips, in paper cases. Each, 82.00 26 
E. b. benjamin’s descriptive catalogue 
1482 
1483 
1484 
1485 
1486 
1487 
1488 
1487. —Blow Pipes, brass, with barrel-shaped head, soldered plat- 
inum tip. Each, $2.50 
1488. —Ditto, Plattner’s form, brass, extra fine, with two tips, and 
extra heavy soldered platinum ends, including mouth-piece 
having combined effect of trumpet and cylinder. Each, $3.00 
1489. —Ditto, ditto, German silver. “ 3.50 
1490. —Ditto, ditto, ditto, nickelized. “ 4.00 
(The last mentioned will not become easily oxidized.) 
1491. —Ditto, brass, with blast attachment for gas, and regulating 
screw with mark. • Each, $3.00 
1492 
1495 
1496 
1492. —Ditto, Plattner’s spinne, of brass, having five jets from one 
reservoir, to be used in connection with Rose’s Lamp and Blow 
Table, to produce a high heat for fusing minerals, etc. 
Each $5.00 
1493. —Ditto, Bunsen’s, blast, mounted on round iron foot, having 
a rubber attachment, connecting with a horn-mouth piece. 
Each $5.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
27 
1497 
1498 
1505 
1504 
1501 
1494. —Blow-pipe Brass, with ivory-mouth piece, mounted on 
fine mahogany stand, having jet arranged with thumb-screw, so 
that it may be turned in either vertical or horizontal direc- 
tions. Each $3.50 
1495. —Ditto, ditto, with brass lamp. “ 4.50 
1496. —Ditto, in fine mahogany case, containing one Berzelius 
blow-pipe, with soldered platinum end, ten reagent cells with 
caps, pair of forceps and box for platinum. Each $5.00 
1497. —Blow-pipe, mounted on stand, with automatic bellows. 
Each $12.00 
Blow-pipe Apparatus. See Apparatus. 
1498. Bolt Heads, of Bohemian glass. 
4 8 16 oz. 
.35 .40 .50 each. 
1499. —Bolt Heads, with long neck of ordinary glass. 
Each, .60 to $1.00 
Bone Ash. See Chemicals. 
1500. —Bottles for Chameleon. Each $5.00 
1501. Bottles, for Gas, Bohemian and French. 
8 oz., .35 16 oz., .45. 22 oz., .65 each. 
1502. —Ditto, French narrow-mouthed, or Packing bot- 
tles, for corks, pressed, per doz. 
i | i 1 2 4 6 oz. 
.20 .25 .30 .35 .40 .50 .65 
1503. —Ditto, ditto, ditto, oval, 2 oz., per doz. .60 
1504. —Ditto, best quality white imported blown glass, with ring 
around the neck and wide mouths; 
| f. 1 2 4. 6 8 16 32 oz. 
.40 -50 .75 $1.00 1.25 1.50 1.75 2.50 4.00 per doz. 
1505. —Ditto, ditto, narrow mouthed, same as above. 
1502 28 
E. b. benjamin’s descriptive catalogu 
1506 
1511 
1512 
1513 
1514 
1515 
1519 
1521 
1522 
1506. —Bottles, American pressed, furnished only on special ap- 
plication. Price much below the above. 
1507. —Ditto, French colored glass, narrow mouth. 
1 oz., .50 2 oz., .60 4 oz., .75 6 oz., $1.25 12 oz., 1.75 
1508. —Ditto, ditto, ditto, wide-mouthed, same prices. 
1509. —Ditto, German, wide and vial mouth. 
| 1 2 4 8 16 oz. 
.40 .45 *50 .65 .75 $1.50 per doz. 
1510. —Ditto, French sample, tall and taper for corks, each .40 to .50 
1511. —Ditto, sample, for syrups, on glass foot. Each .25 
1512. —Ditto, sample, French, narrow shape and long, of white 
glass. Per doz. $1.25 
1513. —Ditto, salt-mouths, American, or wide-mouthed bottles for 
storing salts, ground glass stoppers, with mushroom tops. 
pints. quarts. % 1 gal. 
$2.70 4.00 5.25 12.00 per doz. 
1514. —Ditto, German, ditto, ditto, ditto. 
1 2 4 6 8 12 16 24 32 oz. |gal. 
$1.25 1.50 1.75 2.00 2.25 2.75 3.25 4.00 5.00 8.00doz. 
1515. —Ditto, ditto, Bohemian, with finely-cut and polished tops, 
made of glass free of lead, and not easily affected by chemicals. 
1 2 3 4 6 8 16 32 oz. 
$2.00 2.25 2.50 2.85 3.50 4.00 5.50 7.00 per doz. 
1516. —Ditto, salt-mouths, French, with hand made stoppers accu- 
rately double-ground with the finest emery, so that reagents 
stored in them, will not deteriorate. 
I i I < 1 2 4 8 12 16 32 oz. 
$1.15 1.20 1.25 1.30 1.50 2,25 3.00 4.00 5.00 5.50 7.00 per doz. 
1517. —Ditto, French, colored. 
1 2 4 8 1 32 oz. 
$2,00 2.50 3.00 6.00 8.00 10.00 per doz. OF CHEMICAL AND PHYSICAL APPARATUS. 
29 
1518 .—Bottles, ditto, Bohemian black, cut and polished mushroom 
tops, for storing chemicals which are required to be kept from 
the light. Per doz. $6.50 
1519. —Ditto, American tincture, or narrow-mouth, with ground 
glass stoppers and mushroom tops 
4 8 16 32 oz. igal. 1 gal. 2 gal. 
$2.00 2.25 2.63 3.00 5.25 8.00 24.00 per doz. 
1520. —Ditto, ditto, square-pressed stoppers. 
8 16 32 oz. 
$2.25 2.63 3.00 per doz. 
1521. —Ditto, ditto, German flat top stoppers. 
| 1 2 3 4 6 8 12 16 32 oz 
$1.00 1.25 1.50 1.75 2.00 2.25 2.75 3.50 3.80 4.50 per doz. 
1522. —Ditto, ditto, Bohemian glass, entirely free from lead, flat 
top stoppers, fine cut and polished tops. 
1 2 4 8 16 32 oz. 
$2.00 2.25 2.75 4.00 5.50 7.00 per doz. 
1523. —Ditto, Tincture, German, hand-made top stoppers, accu- 
rately ground with fine emery, similar to No. 1524. 
i i i 1 2 4 6 8 12 16 32 
.55 .65 .75 .90 1.00 1.25 1.50 1.75 2.25 2.50 4.50 per doz. 
1524. —Ditto, ditto, French, each stopper ac- 
curately hand-made and double-ground with 
finest emery, so that no air can enter to in- 
jure the solutions stored in them; these bot- 
tles are made expressly for the laboratory, to 
hold choice reagents. 
| I | 1 2 4 6 8 12 16 32 oz. 
.90 $1.00 1.10 1.15 1.25 1.75 2.25 2.50 3.00 3.25 5.00 per doz. 
1525. —Ditto, Tincture, French vitrified labels for Acids, Ammonia, 
Alcohol, etc., carefully stopped by hand, shape No. 1524. 
| pint. pint. quart. | gal. 
.75 $1.00 1.25 2.50 each. 
Ditto, ditto, with engraved labels to order. 
1526. —Ditto, ditto, French blue tinctures, or narrow mouth, with 
glass stoppers. 
1 oz. 2 3 4 8 16 qt. 
$1.25 1.30 1.50 1.75 3.00 4.50 6.00 per doz. 
1527. —Ditto, ditto, Bohemian, flat cut and polished tops. 
4 oz., $3.00 8 oz., $4.25 per doz. 
1516 
1524 30 
E. B. benjamin’s descriptive catalogue 
1528 
1529 
1530 
1531 
1528. —Bottles, tubulated at foot and narrow mouth for corks. 
Qts., .75 % gal., $1.00 1 gal., 1.25 each. 
1529. —Ditto, Tincture, accurately ground top stopper, tubulated 
at foot for separations. 
1 litre. 2 litres. 4 litres. 
$1.00 1.50 2.00 each. 
1530. —Ditto, separatory, with accurately ground top stoppers, and 
stop-cocks carefully ground into the tubulature at foot, every 
joint nicely polished with ground emery, so that neither air 
nor fluids can escape when enclosed. Best French. 
£12 4 8 litres. 
$3.50 3.75 4.75 6.25 9.50 each. 
1531. —Ditto, separatory, consisting of separatory bottles and sepa- 
ratory funnel, joined by a rubber stopper. 
1 litre, $6.00 2 litres, 8.00 each. 
1532. —Ditto, chlorine, of colored glass, carefully ground glass 
stopper, with glass cap fitted by ground glass joint, 1 litre 
capacity. Each, $2.00 
1533. —Ditto, for ether, white glass, with cap and ground stoppers 
1 2 4 8 16 32 oz. capacity. 
.25 .35 .40 .60 $1.00 1.30 each. 
1534. —Ditto, Woulff’s small 2 neck, for weighing and fitting small 
apparatus. Per doz., $6.00 
1535. —Ditto, ditto, 3 necks. “ 7.20 OF CHEMICAL AND PHYSICAL APPARATUS. 
31 
1534 
1539 
1541 
1542 
1543 
1536. —Bottles, 2 necks, with round straight neck for rubber tub- 
ing, 12 oz. Each, $1.00 
1537. —Ditto, ditto, with centre neck for cork, 12 oz “ 1.25 
1538. —Ditto, Woulff’s, Bohemian, 2 necks. 
2 4 8 16 32 oz. % gal. 
.40 .45 .50 .65 .90 $1.30 each. 
1539. —Ditto, ditto, with a tubulature, near bottom. 
Quarts, $1.50 4 gal., 2.25 each. 
1540. —Ditto, Woulff’s Bohemian, 3 necks; 
2 4 8 16 32 oz. | 1 1| gal 
.45 .45 .60 .75 $1.00 1.25 2.50 3.25 each. 
1541. —Ditto, Woulff’s French, 2 necks carefully 
sealed on with glass shoulders. These French 
Woulff bottles are never known to leak about the 
tubulature. 
4 i 1 2 4 litres. 
.56 .75 $1.00 1.40 2.50 each 
1542. —Bottles, Woulff’s French, 3 necks. 
i 4 1 2 4 litres. 
:65 .85 1.15 1.75 3.00 each. 
1543. —Ditto, Woulff’s French, 2 necks, with tubulature near foot. 
1 litre, $1.75 2 litres, $2.50 4 litres, $4.00 each. 
1544. —Ditto, ditto, 2 necks, stoneware, tubulature near bottom. 
60 litres. ‘ Each, $60.00 
1545. Bottle Caps, of flexible vulcan- 
ized caoutchouc. Price according to 
diameter. $2.50 to 4.50 per doz. 
1546. —Bottle Imps, ordinary. Each, .25 
1547. —Ditto, fine quality. Each, .75 
1548. —Ditto, with car and balloon. “ $1.00 
1549. —Bottle Brushes. See Brushes. 
1550. —Boxes of black japanned tin for blow-pipe use ip holding 
capsules, test tubes, etc. Each, .75 
1547 
1545 32 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
1551. —Boxes, fumed ivory, for | oz. bottles. Per doz., .60 
1552. —Ditto, including bottles. “ $2.00 
1553. —Ditto, boxwood, including bottles. “ 1.50 
1554. —Ditto, of pasteboard, including bottles. “ 1.25 
1555. —Ditto, fine turned rosewood, ivory trimmed, for tapers or 
bottles. Each, .25 
1556. —Ditto,'pasteboard, round English form, holding 
2 grammes, useful for putting up ordinary reagents, 
pills, or small articles of jewelry. Per doz., .25 
1557 .—Ditto, ditto, ordinary form, round, in nests of 5, Per doz. .25 
1558. —Ditto, pasteboard, English form, extra quality, cherry lining, 
2 grammes. Per doz. boxes, .25 
1559. —Ditto, ditto, 4 grammes. “ .40 
1560. —Ditto, ditto, 3 in a nest, 1’s to 3’s. “ .45 
1561. —Ditto, ditto, 5 in a nest, 2’s to 6’s “ .48 
1562. —Ditto, ditto, 6 in a nest, l’s to 6’s. “ .50 
1563. —Ditto, for Lip Salve, plain. Per doz. boxes, $1.00 
1564. —Ditto, with legend “ Lip Salve.” “ 1.25 
1565. —Ditto, of best China porcelain, with wreath and legend, 
“ Lip Salve.” Per doz., $3.50 
1566. —Ditto, ditto, rose and gilt, tipped. “ 2.50 
1567. —Ditto, ditto, turned boxwood, flat form. “ 1.00 
1568. —Ditto, ditto, turned rosewood, “ “ 1.25 
1569. —Ditto, small dove-tailed pine wood. 
3x3x15 3x3x20 12x12x30 
.35 .40 $1.00 each 
1570. —Box Sieves, Griffin’s, 3 partitions, used in 
connection with the blow-pipe. Each, $2.50 
1571. Bologna Flasks, of thick unannealed glass, 
will bear a smart blow, but fracture when a hard 
angular body is dropped into them. Per doz., $1.50 
1572. —Bombs, see Candle Bombs. 
1573. —Brass Jets, see Jets. 
1574. —Brushes, fine, for Feather Tubes. Each. .25 
1575. —Ditto, for ordinary Test Tubes. “ .10 
1576. —Ditto, ditto, large ditto, ditto. .15 
1577. —Ditto, ditto, extra large ditto, ditto, or Bottles. “ .20 
(The above test tube brushes are all made of galvanized iron 
or copper, to prevent rust.) 
1556 
1563 
1574 
1575 OF CHEMICAL AND PHYSICAL APPARATUS. 
33 
1578. —Brushes, for bottles, patent tin handles. Each, .25 
1579. —Ditto, ditto, wood handles, large size. “ 81.00 
1580. —Ditto, Camel’s hair, for cleaning the button, in assay- 
ing. > • Each, .25 
1581. —Ditto, bristles, ditto. “ .50 
1582. Bubble Pipe, of clay, with connecting piece of brass, for 
blowing hydrogen bubbles. Each, .40 
1583. —Ditto, ditto, of brass. “ .75 
1583 
1587 
1588 
1589 
1584. Bulb Tubes, in which ignited oxide of copper may be 
cooled ; hard glass; small sizes. Per doz., .60 
1585. —Ditto, in which ignited oxide of copper maybe cooled; 
hard glass; large sizes. Each, .10 to .25 
1586. Bungs, of selected cork, from % in. to 2 in. Doz. .20 to .70 
1587. —Burettes, Bink’s, English form, with wooden foot. 
25 25 50 50 100 c. c. 
5 2 U) 2 
81.50 1.75 1.75 2.25 2*25 each. 
1588. —Ditto, Gay Lussac. 
25 50 50 100 100 c. c. 
1 . i A 1 2 
81.50 2.00 2.50 2.25 2.50 each. 
1589. —Ditto, Geissler’s, with ground glass stopcock running the 
whole length of tube and lateral tube for receiving fluids near 
the top. 
25 50 100 c. c 
A) a 
82.50 3.25 4.00 each. 34 
E. B. benjamin’s DESCRIPTIVE catalogue 
1590 
1591 
1592 
1593 
1594 
1597 
1598 
1590. —Burettes, Mohr’s.. 
20 20 25 25 30 40 50 50 
6 lb 5 A lb 5 2 5 
81.25 1.50 1.50 1.75 2.00 2.25 2.00 2.25 
50 60 100 100 100 200 c. c. 
1) X X XXX 
82.50 2.50 2.50 2.7°5 2.75 2.00 each. 
1591. —Ditto, ditto, with glass stopcock. 
25 25 50 50 100 100 c. c. 
X jl 1 lo | 1 
82.25 2’50 3.00 3.25 3.50 4.00 each. 
1592. —Ditto, for Chameleon process, with lateral tube, joined near 
the bottom. 
25 50 c. c. 
A A 
81.75 2.25 each. 
1593. —Ditto, Rammelsburg’s, with lateral tubes, joined near the 
top, and sealed in to carry the test liquor, to avoid frothing. 
25 50 c. c. 
S 5 
81.50 2.00 each. 
1594. —Ditto, Deissler’s Chameleon, having a lateral tube running 
to the bottom. 
25 50 c. c. 
A I 
82.00 2.50 each. 
1595. —Burettes, Leslie’s, see Leslie’s Alkalimeters. 
1596. —Burette Clamps. Each, .50 
1597. —Burette Swimmers, or Erdmann’s Float. “ .50 
1598. —Burette Tips, with rubber attachments. “ .25 
1599. —Burette Supports and Holders, see Supports. OF CHEMICAL AND PHYSICAL APPARATUS. 
35 
BURNERS. 
1600.—Burners, Argand standard register, as used with Bunsen’s 
Photometer. Each, $4.00 
1601 
1602 & 1603 
1606 
1607 
1601. Ditto, with flame apparatus, mounted on stand for spectral 
analysis or polarization of light $G.OO 
1602. —Ditto, Bunsen’s plain. Each, $1.25 
1603. —Ditto, with tripod on top, to support evaporating dish. 
Each, $1.75 
1604. —Ditto, ditto, with ring to regulate the flow of air into the 
burner, to produce at pleasure blue or yellow flame. 
Each, $1.35 
1605. —Ditto, new French pattern with air regulator, consisting of 
lever attached to the receiving tube, which raises and lowers at 
pleasure a cap over the air-vent, and at same time graduates 
the flow of gas. Each, $2.50 
1606. —Ditto, ditto, with two holes in base of Burner, to attach to 
retort stand, without star. Each, $1.75 
1607. —Ditto, ditto, Bunsen’s improved new style of Burner, having 
a rachet regulator in place of the ordinary air regulator, dis- 
pensing with stopcocks, and graduating the flow of air and of 
gas at the same time. It is simple, compact, convenient and 
entirely new. Each, $2.75 
1608. —Ditto, ditto, having one receiver with double tube for gas 
and air, regulated by one stopcock; and also having a lateral 
jet, regulated by stopcock. A new invention, and powerful. 
Each, $7.50 
1609. —Ditto, ditto, French, with universal joint and stopcocks for 36 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
1611 
1612 
1610 
1609 
1613 
1618 
1619 
the air and gas, for throwing the flame in horizontal or oblique 
directions. Each, $10.00 
1610. —Ditto, Bunsen’s blast, having the tubes for receiving gas 
and air at right angles, with different size tips for regulating 
the jet. Each, $7.50 
1611. —Ditto, ditto, very small, for use in place of the mouth blow- 
pipe for producing a very fine taper flame. Each, $5.00 
1612. —Burner Attachment, for producing a gas blast, consist- 
ing of two brass tubes terminating in one jet, one of which is 
placed in the delivery tube of the ordinary Bunsen burner, and 
the other connecting with the blowing machine. Each, $1.00 
1613. Burners, Bunsen’s small blast, for fastening to the table, 
with one extra tip. Each, $6.00 
1614. —Ditto, Bunsen’s plain, with star and chimney. “ 2.00 
1615. —Ditto, ditto, with star and porcelain plate to catch the ashes 
of the filter. Each, $2.50 
1616. —Ditto, ditto, with star, chimney and plate to catch the ashes 
of the filter, and provided with a thumb-screw at the base to 
raise and lower the burner. Each, $3.00 
1617. —Ditto, ditto, plain, with two tubes. “ 2.00 
1618. —Ditto, ditto, plain, with three tubes. “ 2.50 
1619. —Ditto, Babo, with three tubes formed into one circular, OF CHEMICAL AND PHYSICAL APPARATUS. 
37 
opening at top, with star supporting a sheet iron chimney and 
stopcock to regulate the flame; also having a centre tube. 
Each, $9.50 
1620 
1621 
1628 
1620. —Burners, Bunsen’s, with three tubes and caps, arranged so 
that the flame touches every part of the crucible. Each, $4.00 
1621. —Ditto, Berzelius’s, having a sliding cap with thumb-screw at- 
tachment, to regulate the flow of air without stopcock, otherwise 
the same as the foregoing. Each, $7.50 
(The two styles of Burners, Nos. 1619 and 1621, produce a 
solid circular flame with a centre flame, generating a high 
degree of heat.) 
1622. —Ditto, Bunsen’s, with four tubes. Each, $3.00 
1623. —Ditto, ditto, six tubes. “ 4.00 
1624. —Ditto, ditto, eight tubes. “ 5.00 
1625. —Burner, Griffin’s Blast Gas, with nine tubes grouped to- 
gether, giving a very powerful heat when attached to a blowing 
table and surrounded by a fire clay cylinder. Each, $13.50 
1626. —Burners, Bunsenis, French, with two tubes bent off in 
separate directions. Each, $2.50 
1627. —Ditto, ditto, with three tubes bent off in separate directions. 
Each, $3.50 
1628. —Ditto, Blast, terminating in six tips. 6.50 
1629. —Ditto, Bunsen’s, newly invented, consisting of seven Bun- 
sen burners, arranged in a circle, each burner having a cap to 
spread the flame, all enclosed in a sheet-iron frame, which con- 
centrates the heat, and, at the same time, supports the vessel to 
be heated. Each, $12.00 38 
E. b. benjamin’s descriptive catalogue 
1630 
1631 
1632 
1625 
1633 
1630.—Burners, Crown or Rose, consisting of a common burner, 
having a cap with the sides pierced, through which small jets 
of flame pass out Each, $1.75 
1631—Ditto, ditto, large size, or locomotive, producing a high 
degree of heat. Each, $5.00 
1632. Ditto, ditto, ditto, with a lever attached by which the flow 
of air and flame is regulated at the same time. A new inven- 
tion. Each, $10.00 
1633. —Ditto, Mendelsohn, for heating watch glasses. “ $1.75 
1634. —Ditto, with long tube and ordinary gas tip. 11 2.00 
1635. —Ditto, Specstone, Bunsen’s, single tube. “ 2.00 
1636. —Ditto, ditto, Rose’s. Smaller, $2.50; larger, $3.00 each. 
1637. —Ditto, Vulcan, cast iron top and bottom, dispensing with the 
tripod. Each, .75 
1638. —Ditto, Sand, flat shape, consisting of a hollow iron frame 
filled with sand> and cement, through which the gas exudes. 
Each, $1.25 
1639. —Ditto, ditto, ditto, on tripod. “ 1.25 
1640. —Burner Forks, for holding burner when attached to a 
retort support. Each, .50 
1634 
1637 
1638 
1643 
1644 OF CHEMICAL AND PHYSICAL APPARATUS. 
39 
1641. —Burner Plates, porcelain, for holding the ashes when filters 
are burned. Each, .75 
1642. —Ditto, tips, of silicated steatite for attaching to the ends qf 
common gas burners. Each, .25 to .50 
1643. —Ditto, tubes, or jets with flattened ends to introduce into 
an ordinary Bunsen burner, to produce a flat flame. Each, .25 
1644. —Ditto, furnaces, porcelain, to surround the burner to in- 
crease the heat. Each, $l-.25 
1645. —Burnishers of Agate. “ 1.50 
1646. —Bolt-head experiment in Pneumatics. Apparatus for. 
Each, $4.00 
1647. Bell in vacuo. “ 4.00 
1648. —Bursting Squares. • Per doz., $2.50 
1648 .a—Colorimeter, for examination of sugars and syrups, 
after Dr. Scheibler’s method. 
1649 
1656 
1661 
1649. —Candle Bombs, small glass bulbs, filled with colored 
water and sealed, which explode when heated. Per doz., .40 
1650. —Caoutchouc, unvulcanized, in sheets, for forming tubes, 
covering jars, etc., /o in. thick. Per square foot, .75 
1651. —Ditto, vulcanized, ditto, ditto. 11 .70 
1652. —Ditto, Balls, pierced to attach to pipettes, syphons, etc., 
round and pear shape. Each, .50 
1653. —Ditto, caps, vulcanized, for fitting glass tubes to glass 
bottles, etc., 1, 2 and 3 tubes. Each, .20 to .40 
Ditto, Connectors. See Rubber Connectors. 
Ditto, Stoppers. See Rubber Stoppers. 
Ditto, Tubing. See Rubber Tubing. 
1654. Capillary Plates, for showing the parabolic curve. 
Per set, $2.00 
1655. —Ditto, Tubes, in sets unmounted. Each, .40 40 
E. b. benjamin’s descriptive catalogue 
1656. —Capillary Tubes, mounted in japanned cistern. Per set,$2.00 
1657. —Ditto, Tubing, 5 feet lengths. Each, .10 
1^58.—Caps for bell jars, globes, etc., of brass. 
Sizes, f to 1 1| 1| If to 1| If 2 2| in. 
.55 .60 .65 .70 “ .75 .80 .85 each. 
1659. —Ditto, for gas bags, etc. 
i f -J to 1 in. diameter. 
.50 .55 .60 each. 
Ditto, for deflagrating jars. See Deflagrating Covers. 
1660. —Ditto, for galli pots, small jars, etc., silvered. Per doz., .10 
1661. —Ditto, porcelain, for lamp chimneys, to economize and 
reflect the light. 
Nos. 12 3 4 
.50 .60 ‘.75 .90 each. 
1662. —Canules, French. Per doz., $1.25 
Capsules of glass. See Glass Evaporating Dishes. 
1663. —Ditto, of horn. 
If 2 2| 3 3| 4 4f 4f 5| 
.20 .24 .32 .36 .45 .56 .72 .88 $1.07 per pair. 
Ditto, of iron. See Sand Baths. 
1664. —Ditto, ditto, transparent glazing inside, lipped. 
Sizes, 5 6 7 in. 
$1.20 1.40 2.00 each. 
1665. —Ditto, of platinum, sizes as required. Per oz. (gold), $10.00 
1666. —Ditto, of silver, sizes as required. “ “ 2.50 
1667. —Ditto, of porcelain, nests of 5, without lip, glazed inside, 
similar to watch glasses, very shallow. Per nest, $1.00 
1668. —Ditto, ditto, 3 in nest. “ .75 
Ditto, ditto, French. See Evaporating Dishes. 
1669. —Ditto, ditto, with a sharp lip, nests of 4, very thin and 
transparent. Per nest, .80 
1670. —Ditto, ditto, with rounding lip, nests of 4, with perpendicu- 
lar sides and flat bottoms, about f of an inch deep. Per nest, $1.00 
1671. Ditto, round bottom, without lip, glazed throughout, about 
2 inches in diameter across the top and deep. Per doz., $2.50 
1672. —Ditto, Plattner’s, flat bottom and straight sides, holding 
about | ounce, semi Berlin. Per doz., $1.25 
1664 
1667 
1669 
1672 
1673 OF CHEMICAL AND PHYSICAL APPARATUS. 
41 
1673. Capsules, Plattner’s flat bottom and. oblique sides, holding 
about | of an ounce, of fine Meissen porcelain. Each, .20 
1674. —Ditto, of porcelain, very small, for blow-pipe fusions, and 
of extra hard and tough porcelain. Per doz., $1.20 
167&. —Ditto, half-egg form, of extra fine and thin porcelain, to 
sustain a high heat. Per doz., $1.75 
Ditto, with handles. See Royal Berlin Casseroles. 
Ditto, other forms. See* Digesters, Evaporating Dishes, 
Combustion Boats, etc. 
1676. —Carbonic Acid, liquified, in sealed barometer tubes, 
enclosed in velvet lined leather cases. Each, $6,50 
Ditto, ditto, apparatus. See Potash Bulbs. 
1677. Carbons ,for Bunsen’s and other batteries,of French graphite. 
Sizes, 6 7 10 in. 
.40 .50 .75 each. 
1678. —Ditto, flat, % inch thick, 10 x 6 in. Each, .75 
1679. —Ditto, of pure graphite ,for the electric light. 
Per inch, .6 
1680. —Carbonic Acid Generator, consisting of a glass jar, con- 
taining a bell-shape gas holder and leaden tripod. The gas is 
delivered through a gallows screw connector. 
12 15 20 in. high. 
$10.00 15.00 20.00 each. 
1681. —Ditto, Water Apparatus, 1 quart capacity, made of glass 
covered with reed netting, porcelain foot. Each, $7.50 
1680 
1681 42 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
1682 
1686 
1682.—Carboys of Earthen Ware, with filter, for the manu- 
facture of chlorine. Each, $10.00 
1583.—Ditto, ditto, for the concentration of acid or ammonia. 
60 100 litres. 
$10.00 12.00 each. 
1684. —Carthesian Imps, ordinary, black. Each, .20 
1685. —Ditto, ditto, fine quality. Each, .75 to $1.00 
1686. —Ditto, ditto, with jar, additional. Each, $1.50 
1686. A—Cases, to hold 6 bichromate battery cells. “ 1.50 
1687. —Caseroles, semi Berlin, ordinary form, with lip and 
straight-flattened handle, glazed inside and outside. 
Sizes, No. 00 0 1 2 3 4 
Price, .35 .50 .70 .85 $1,00’ 1.35 each. 
1687 
1688 
1690 
1691 
1688. —Ditto,deep, for coloring pots usedin manufacturing jewelry. 
Sizes, 5-J 61 7£ in. 
Prices, $3.00 4.00 • 5.00 eacn. 
1689. —Ditto, Royal Berlin, lipped, looped handle glazed inside and 
out, 1| ounce capacity each. Each, .40 
1690. —Ditto, ditto, lipped and round porcelain handle. 
1 2 3 oz. 
.30 .35 .40 eacn. 
1691. —Ditto, of 6nest French porcelain, glazed inside and out, ex- 
cept the bottom, having cover and wooden handle. 
Nos. 5 4 3 2 1 1 extra. 
$1.00 1.25 1.50 2.00 2.25 4.00 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
43 
1692.—Caseroles, Meissen, glazed throughout, except the bot- 
tom, loop handle. 
Nos 3 2 1 
.75 $1.00 1.25 each. 
1692. a—Cassolettes, Lubin’s, of rosewood, for holding small 
quantities of perfume. Per doz., $3.00 
1693. —Cat Skins, for exciting electric apparatus. Each, $1.00 
1693 •A—Caustic Holders, of ivory, with metallic ends. “ 4.00 
1694. —Cells, carbon, for fusion supports. “ .50 
1695. —Ditto, porous, French and German, imported. 
2x4 2fx4 2|x5| 2|x6 2fx7| 3x8 in. 
.12 .15 .20 .30 .45 .50 
1696. —Ditto, ditto, sizes above, 3x8. Each, .75 to $1.00 
1697. —Ditto, oval microscopic of plate glass, l|x3 inches. 
Each, .50 
1698. —Centimetre Measures, of boxwood, having centimetres 
on one side and English inches on the other. Each, .50 
1699. —Ditto, ditto, of ivory, in millimetres, up to 5 centimetres. 
Each, $2.00 
1700. —Ditto, ditto, of ivory, having English inches on one side 
and graduated up to 1 metre. Each, $2.25 
1701. —Charcoal Pieces, prepared for use in blow-pipe fusions. 
4 pieces for .25 
1702. —Ditto, Borers, Plattner’s, of steel, 
with spatula handle. 
Nos. 12 3 
.30 .35 .40 each. 
1703. —Ditto, ditto, with polished cocoa 
handles. 
Nos. 4 5 6 
.50 .60 .75 each. 
1704. —Ditto, ditto, with eight points, with 
polished cocoa handles and brass ferule. 
Nos. 7 8 9 
$1.00 1.20 1.25 each. 
1705. —Ditto, Holder, with platinum attachment and wood 
handle. • Each, $3.25 
1706. —Ditto, Saw, small. “ .50 
1707. —Ditto, ditto, large. “ .75 
1695 
1702 
1703 
1704 
1706 44 
E. B. benjamin’s descriptive catalogue 
1708. —Charcoal Spatula, steel, Plattner’s, cocoa handle. Ea. .50 
1709. Ditto, Tongs, bent, 18 inches long, light weight. 
Per pair, .75 
1709 
1710 
1713 
1714 
1715 
1716 
1710. —Ditto, ditto, bent inwards, with the insides rasped and 
handles twine wound, for cold weather. Each, $1.25 
1711. —Ditto, Sticks, for breaking glass, according to size. 
Per doz., .50 to .60 
1712. Chisels, of Steel, Plattner’s, for clipping ingots. Each, .50 
1713. —Chloride of Calcium Jars, on foot, with tubulature at 
side, near the bottom, for drying gases. 
4 8 12 16 24 32 oz. 
.65 .85 $1.00 1.50 2.50 3.50 each. 
1714. — Ditto, ditto, 
Tubes, small, straight, 
assorted. Each, .15 
1715. —Ditto, ditto, 2 bulbs, 
8 inch. Each, .25 
1716. —Ditto, ditto, bent 
ends. Each, .25 
1717. —Ditto, ditto, large size; 12 to 16 inches. Each, .50 
1718. —Ditto, ditto, straight, with small tubes inserted in a cork at 
either end. Each, .20 
1719. —Ditto, ditto, Marchand’s, U shape, with connecting tube. 
Each, .50 
1720. —Ditto ditto, IT shape* plain. 
6 8 10 inch. 
.30 .50 .60 each. 
1719 
1720 OF CHEMICAL AND PHYSICAL APPARATUS. 
45 
1721.—Chloride of Calcium Tubes, in setts of 3, each forming 
around the other. Per set, .75 
1722 
1723 
1727 
1722. —Ditto, ditto, ditto, with 3 bulbs, small. 
4 to 5 inches. 8 in. 
.40 .75 each. 
1723. —Ditto, ditto, U shape, Fresenius’ form, 2 bulbs 
in each limb, and half-bulb in connecting tube. 
Each, .75 
1724. —Ditto, ditto, U shape, with drip in the centre. 
Each, $1.00 
1725. —Ditto, ditto, with stopcock in the drip. 
Each, $3.50 
1726. —Ditto, ditto, V form, 9 inches high. Each, .60 
1727. —Ditto, ditto, Weeber’s, U form, having 3 large bulbs. 
Each, .75 
1728. —Charts, colored, showing the spectra of stars and metals, 
according to Kirrhoff and Bunsen. Size, 28 x 40 Each, $3.25 
1729. —Ditto, ditto, in sets of 3. 9.00 
1730. —Ditto, of snow crystals, showing the different forms assumed 
by frozen vapor. Size, 24x36. Each, $4.00 
1731. —Chlorine Gas Generating Apparatus, consisting of 
glass flask, safety funnel, and delivery tube. 
pts. qts. | gal. 
.90 $1.10 1.35 each. 
1732. —Ditto, ditto, with wash bottle. 
pts. qts. | gal. 
$1.15 1.35 1.90 each 
1733. Ditto, ditto, apparatus for generating, consisting of 
lamp, pneumatic trough, iron stand, flasks, sand bath, etc. 
Each, $10.00 
1730 
1712 46 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
1734 
1736 
1734. —Chlorine Gas Apparatus, Silliman’s method. Each, $6.00 
1735. —Ditto, absorbing apparatus, Bunsen’s, for use in volumetric 
analysis, as described in Mohr’s titrir method, exclusive of 
stand and lamp. Each, .75 
1'736.—Ditto, ditto, Bunsen’s style. “ .75 
1737. —Ditto, ditto, Mohr’s, without jar. “ $1.25 
1738. —Ditto, Meter, Descroizelle’s, graduated in 100 c.c. “ 2.50 
1739. —Ditto, ditto, Gay Lussac, graduated in 100 c.c. “ 2.50 
1740. —Ditto, ditto, Mohr’s. “ 1.25 
1741. —Ditto, Bottles, of cobalt glass, 1 litre, with glass cap, and 
tightly-fitting joint. Each, $2.00 
1742. —Ditto, Jar, stout glass for burning substances in chlorine. 
Each, $3.00 to 5.00 
1743. —Ditto, Safety Pipette, ac- 
cording to Mohr, with safety tube, 
rubber tube, and pinch-cock. 
Each, $1.00 
Ditto, Gas Bottles. See Gas 
Bottles. 
1744. —Ditto, Distilling Apparatus, for distillation of chlorine 
and iodide of potassium, according to Fresenius. Each, $1.00 
1745. —Ditto, ditto, according to Mohr, consisting of two flasks, 
connecting tube, safety tube, and stopcock. Each, $1.50 
1746. —Chime, of 2 bells. “ 2.50 
1744 OF CHEMICAL AND PHYSICAL APPARATUS. 
47 
1747. —Chime, of 3 bells. Each, $3.25 
1748. —Ditto, of 5 bells. “ 5.00 
1749 
1750 
1751 
1755 
1758 
1749. —Clamps, wooden, for holding test tubes in the flame. 
Each, .20 
1750. —Ditto, larger, with a spring for holding larger tubes. “ .50 
1751. —Ditto, heavy iron, with rod to attach to the counter. “ $1.00 
1752. —Ditto, in sets, with cork, lined jaws. Per pair, 3.00 
1753. —Ditto, smaller, of iron, to attach to a retort stand, also 
having cork-lined jaws. Each, $1.25 
1754. —Ditto, for watch glasses, Dr. Craig’s form. “ .20 
1755. —Ditto, ditto, Hoffman’s form. “ .20 
1756. —Ditto, ditto, Mohr’s form. 
3 4 5 6 in. 
•25 .30 .35 .40 each. 
1757. —Ditto, for holding hot test tubes, metallic, with wooden 
handle. Each, .50 
Ditto, for batteries. See Binding Clamps. 
Ditto, wooden, for burettes, pipettes, retorts, etc. See 
Supports. 
Clay Supports. See Crucible Supports. 
1758. Cobalt Bottles, with cap and long stopper, German glass. 
I 1 oz. 
.35 .50 each. See also Acid Bottles. 
Ditto, Glasses, used in testing colored flame. See Colored 
Glasses. 
Coddington Lenses. See Lenses and Loups. 48 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
1759 
1760 
1759. —Coffee Machines, glass and porcelain, French. 
Each, $7.50 
1760. —Ditto, ditto, porcelain, German, for preparation 
of coffee for the table, by infusion. A very highly prized appar- 
atus by those who use it. 
Nos. 3 4 5 
$3.50 4.50 6.00 each. 
Coils, Ruhmkorff’s. See Electrical Coils. 
Colanders. See Straining Dishes, Baskets, Filters, etc. 
1761. —Collection of Crown Diamonds, glass models, consisting 
of Kohinoor and three others of the royal diamonds, in a nice 
velvet lined, morocco case. Each, $20.00 
1762. —Ditto, of artificial gems, showing the form of crystalization 
of the precious stones; also, the different styles in which dia- 
monds are cut, in a velvet-lined mahogany box. Each, $20.00 
1763. —Ditto, of glass crystals, in a velvet-lined box. “ 15.00 
1764. —Ditto, of crystalographic, models in wood Rose’s. 104 picees, 
Each, $20.00 
1765. —Ditto, ditto, smaller, 34 pieces. “ 9.00 
1766. —Ditto, ditto, primary forms. 
1767 .—Ditto, ditto, of glass, with strings, for showing their axes. 
1768.—Ditto, of 10 rare specimens for spectral analysis, with 
tubes having platinum ends, in a highly polished case of 
boxwood. Complete. Per set, $7.50 
1769 .—Ditto, of objects for examination by the solar microscope, 
mounted, on cork. $25.00 
1764 OF CHEMICAL AND PHYSICAL APPARATUS. 
49 
1770. —Collection of Nitrogen disengaged during combustion 
of organic bodies. Simpson’s apparatus for. .75 
Collections of apparatus. See the latter part of this book. 
Ditto, of minerals, fossils, etc. See Minerals. 
1771. —Collision Balls, set of 6 ivory balls, mounted on mahog- 
any frame, graduated arc. $20.00 
1778 
1772 
1776 
1772. —Ditto, ditto, set of 5 balls, of hard wood, mounted. $3,50 
Collodion Balloons. See Balloons. 
1773. —Colored Glasses, for fancy glass blowing, in rods about 
3 feet long. Each, .25. 
1774. —Ditto, Glass Plates, used in testing colored flame. 
Size, 3x3 4x4 5x5 inches. 
•15 .20 .25 each;. 
Color Tests. See Tests papers. 
1775. —Color Test Slab, of porcelain, havings 12 cavities; 4| 
x2| inches. Each, .75 
1776. —Combustion Boats or Capsules, of porcelain. 
2f to 3 3| to 4 6 in. 
.20 .30 .50 each. 
1776. A—Ditto, ditto, of platinum. Price, per grain, .3 
1777. —Combustion Furnace, Storers, consisting of 2 tubes, sur- 
rounded by a sheet-iron frame, having the top covered with 
wire gauze. Each, $1.50 
1778. —Ditto, Liebig’s, as improved by Stenhouse, of sheet iron, 
for use with charcoal. 
Length, 18 in., $2.75 24 in., $3.25. 
1779. —Ditto, Bunsen’s,having 25 burners. Imported. Each, $60.00 
1780. —Ditto, American. “ 50.00 50 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
1781.—Combustion Furnace, French, having 10 burners. 
Each, 
830.00 
1782. —Ditto, ditto, for use with coal oil, as invented and employed 
by St. Clair Deville, with one burner, dropping tube and doors 
to set in for a draft, (without tank.) Each, $12.00 
1783. —Ditto, ditto, with 2 burners. “ “ 18.00 
1784. —Ditto, ditto, with 3 “ " “ 22.00 
1781 
1785.—Ditto, ditto, with 4 burners. “ Each, $30,00 
1785 OF CHEMICAL AND PHYSICAL APPARATUS. 
51 
1786.—Combustion Furnace, ditto, of St. Clair Deville, with 
5 burners, without tank. 840.00 
1787—Ditto, ditto, tank for oil. Each, 825.00 
1788. —Ditto, Lamps. See Combustion Furnaces with gas 
1789. —Ditto, Foil of Copper, for enveloping the tube in organic 
analysis. Per ounce, .5 
1790. —Ditto, Tubing, of genuine hard, infusible Bohemian 
glass. (For sizes, see Glass Tubes.) Per lb., 81.25 
1791 
1791 
1795 
1799 
1800 
1791. —Ditto, ditto, | to f in. diameter, drawn to a point and bent 
for Liebig’s furnace. 18 24 in. 
.40 -50 each. 
1792. Ditto, Tubes, of best infusible Bohemian glass, sealed at 
one end, for nitrogen determinations. 
18 24 in. 
.35 .45 each. 
1793. —Ditto, ditto, porcelain, straight, | inch bore. Each, .50 
1794. —Ditto, ditto, fine French, 1| in. bore. “ 81.50 
1795. —Ditto, ditto, Meissen porcelain, flanged at both ends, and 
glazed inside. 
f 1 2 in. diameter. 
.75 81.00 2.00 each. 
1796. —Ditto, Bricks, of fire clay, for use with Bunsen’s furnace. 
Each, .20 
1797. —Ditto, Supports, for the trough. “ .10 
1798. —Ditto, Troughs, of fire clay, for supporting the tubes, 6 
to 8 in. long. Each, .20 
1799. —Commutators, or pole changers, for reversing the electric 
current. Each, 89.00 to 15.00 
1800. —Compasses, mounted on brass stands, swung on agate 52 
E. b. benjamin's descriptive catalogue 
pivots, resting on fine steel points, with polished wooden cases 
for carrying them. Each, $2.50 
1801 
1803 
1806 
1801. —Compasses, plain, steel bearings. Each, .75 
1802. —Ditto, brass cases, with spring stop and agate bearing. 
No. 1, $1.00 No. 2, $1.50 each. 
1803. —Ditto, watch form. 
No. 4, $3.50 No. 3, $4.00 each. 
1804. —Ditto, ditto, finer graduation, an accurate registry, enclosed 
in brass cases, with cover, especially for geologists. Each, $6.00 
1805. —Ditto, ditto, German silver. “ 6.50 
1806 .—Ditto, ditto, mineralogical, mounted, as above, with a sliding 
and swing indicator, showing the angle of the drip. Each, $15.00 
1807. —Ditto, ditto, very fine Geological, German silver-mounted 
watch case, hung on agate, with a spring top, having also a 
sun dial arrangement, with universal meridian and registered 
meridian of chief cities in United States and Europe. Ea. $27.50 
1808. —Compound Bar, for showing the expansion and con- 
traction of two metals joined together, under the influence of 
extremes of temperature. Each, $1.00 
1809 
1810 
1809. —Condensers, Liebig’s form, of glass, small, unmounted. 
'//A Each, $1.00 
1810. —Ditto, ditto, large, mounted. “ 2.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
53 
1811. —Condensers, Liebig’s form, japanned tin. Ea. $3.50 
1812. —Ditto, brass soldered, mounted on stand. “ 6.00 
1813. —Ditto, ditto, brazed, with movable joints, sliding 
rod, glass tube, fitted, etc., complete. Each, $7.50 
1814. Ditto, V form, with small tube fitted into each 
opening, with a rubber stopper Each, .50 to $1.00 
1815. —Ditto, electrical, Riess’s, for frictional electricity, and 
showing the theory of electrical condensers. Ea., $20.00 
Caustic holder. See No. 1693a. 
1816. —Condenser, Schober’s, new German invention. 
1693a 
1817 
1819 
1821 
1818 
1820 
1817. —Condensing Tubes, with two stopcocks, as per 
illustration; the wide part £ of an inch in diameter. 
Each, $3.00 
1818. —Ditto, ditto, with stopcock on the bend. “ 3.00 
1819. —Ditto, ditto, straight, with 3 stopcocks, as per 
illustratio Each, $4.00 
1820. —Ditto, ditto, U form, with two of the stopcocks 
on one limb, and one on the other, so that the li- 
quid can be drawn off in small portions. Each, $4.00 
1821. —Condensing Chamber, for use with air-pump, 
with movable interior tube, etc. Each, $9.00 
1822. —Ditto, Cylinder, with stopcocks, complete, 
size, 7 x 1| in. Each, $9.50 
1823. —Ditto, or boiling flasks, with lateral bent 
tube, as used in connection with Liebig’s con- 
denser, for boiling small quantities of liquids. 
1 2 3 oz. capacity. 
.15 .18 .20 each 
1822 
1823 54 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
1821.—Condensing Worm, of block tin, enclosed in a zinc tub, 
used for distilling water, etc., according to size. 
Each, 82.50 and upwards. 
1825. —Ditto, ditto, of glass, enclosed in a glass receiver. Each, $1.75 
1826. —Ditto, ditto, with iron support. “ 3.00 
Ditto, Pumps. See Pneumatic Pumps. 
1827. —Conduction of Heat, downwards, slowly in fluids, appar- 
atus for showing. Each, $2.50 
1828. —Conductometer, for illustrating the comparative power 
of different metals for conducting heat. Each, $2.50 
1829. —Cones, dissected. “ 2.50 
1830. —Cone of Platinum, for supporting the filter in Bunsen’s 
method of rapid filtration. Price, .75 
1831 
1831 
1832 
1833 
1834 
1835 
1831. —Connecting or Drying Limb, Mits cherlich’sor Liebig’s. 
Each, .35 
1832. —Ditto, Tube, for nitrogen apparatus. “ .50 
1833. —Ditto, ditto, of glass, or three way tubes, Y shape. “ .25 
1834. —Ditto, ditto, with three openings, T shape. “ .25 
1835. —Ditto, Tubes, bent at different angles. “ .15 
1836. —Ditto, ditto, with two or three lateral tubes. “ .50 
1837. —Connectors of Brass, with male 
and female screws.- Each, .35 
1838. —Ditto, ditto, with double male screw, 
without stopcock. Each, .35 
1839. —Ditto, ditto, with double female screw, 
without stopcock. (See also stopcocks and bladder pieces.) Ea. .30 
1837 
1838 
1839 OF CHEMICAL AND PHYSICAL APPARATUS. 
55 
Connections, for batteries. See Binding Screws and 
Clamps. 
1840. —Connectors, gallows screw, Hare’s. Each, $1.00 
1841. —Ditto, unvulcanized rubber, 2 in. long. 
I A 4 in. bore. 
•40 .50 .60 doz. 
1842. —Connectors, vulcanized rubber. 
8 '&> til in. 
•25 .30 .40 .45 .55 ner doz. 
1840 
APPARATUS FOR MAKING CHLORINE. 
1854 
1843. —Cooper’s Mercurial Receiver. Each, .50 to .75 
Copper Foil. See Combustion Foil. 
1844. —Ditto, Sheet, for galvanic experiments. Per lb., .50 
1845. —Cork Teats. Per doz., $2.00 
Corks, rubber. See Rubber Stoppers. 
1846. —Ditto, champagne. “ $6.00 
1847. —Ditto, velvet, long and small. “ .10 
1848. —Ditto, chemical, carefully selected. 
Nos. 0 to 5 5 6 7 8 9 10 
.06 .07 .08 .10 .11 .13 .16 per doz. 
i I 1 H 11 If H 
.18 .20 .22 .25 .31 .35 .41 
If If If 2 in. 
.50 .55 .60 .65 per doz. 
1849. —Ditto, extra large and flat. Per doz., .75 
1850. —Cork Borers, set of 12, each borer having a 
handle of ordinary brass. Per set, $4.00 
1851. —Ditto, ditto, set of 12, each best German make. 
» A i A 4 it -& it i A 4 H in. diam’r. Per set, $4.50 
1850 56 
E. b. benjamin’s descriptive catalogue 
1852. Cork Borers, set of 6. Each, $2.25 
1853. —Ditto, ditto, set of 3. “ 1.10 
The ordinary quality not kept in stock; the above are of the 
very best hardened brass. 
1854. —Ditto, ditto, of steel, wooden handle 
i i f in. 
$1.50 1.70 1.80 2.00 each. 
Ditto, Files. See round files and rasps. 
1855. —Ditto, Knife, for cutting corks. 
Each, .25 
1856. —Ditto, Pressers, of cast iron. “ .50 
1857. —Ditto, ditto, of steel, usual style. Each, $1.00 
1858. —Ditto, ditto, with fine teeth and extra nib. “ 1.25 
1859. —Ditto, ditto, heavier. “ 1.00 
1860. —Ditto, Screws, for pocket. “ .25 
186L—Ditto, ditto, larger, with wood handles. “ .40 
1862. —Ditto Lined Tongs, of steel, for holding hot tubes. 
Each, $1.25 
Cotton lamp-wick. See Wicks. 
1863. Covers, convex, of glass, for covering Beakers, etc. 
3 3| 4 4| 5 6 in. 
$2.50 3.00 3.50 4.00 5.00 6.00 per doz. 
1864. —Ditto, glass, flat. 
2 2| 3 4 5 6 in. 
.50 .75 $1.00 1.25 1.50 2.00 per doz. 
Single covers, 20 per cent, higher. 
1865. —A full set of ditto, one each size. .65 
1866. —Ditto, ditto, with a hole in the side, for stirring rod. 
2 2| 3 4 5 6 in. 
.75 $1.00 1.25 1.50 2.00 2.50 per doz. 
Single covers the same style, 20 per cent, higher. 
1867. —Ditto, with a hole bored in the centre, to receive a funnel. 
3 4 5 6 in. 
$2.00 2.50 3.00 3.50 per doz. 
Single ones, 20 per cent, higher. 
1868. —Ditto, flat, round French plate glass, 2 in. Each, .25 
1869. —Ditto, flat, square, ground glass. 
2 4 5 6 7 8 9 10 in. 
.40 $1.00 1.50 2.00 2.40 3.00 3.25 4.00 eacn. 
Single glasses, 10 per cent, higher. 
Ditto, other, flat. See glass plates. 
1856 
1857 
1858 
1863 OF CHEMICAL AND PHYSICAL APPARATUS. 
57 
1,870.—Covers, glass, with knob, useful for covering 
choice specimens or small apparatus when laying 
on the table. 
4 7 in. 
.50 .75 each. 
1871. —Ditto, microscopic, very thin glass, cut in circles. 
Per doz., .35; per ounce, 84.00 
1872. —Ditto, ditto, cut in squares. “ .30; “ 83.00 
1873. —Cremometer, Chevalier, with jar and thermometer. 
81.50 
1874. —Ditto, Quevenne, with jar and thermometer. 1.00 
1875. —Ditto, glass foot, graduated, 0 to 12. .60 
1876. —Crucibles, assay of unglazed porous clay, American. 
Per doz., 81.00 
1877. —Ditto French, unglazed white porous clay. doz. 82.50 
1878. —Ditto, Beaufay, French, soft, nearly white material, tall, nar- 
row form, with spout, used for fluxing pots and for fusing enamel. 
1870 
1877 
NO. 
HEIGHT. 
WIDTH. 
PRICE. 
1 
2 
11 
$0.05 each. 
2 
21 
11 
.05 “ 
3 
If 
.07 “ 
4 
31 
2 
.09 “ 
5 
3t 
21 
.10 “ 
6 
2| 
.12 “ 
7 
a 
21 
.16 “ 
8 
5 
2f 
.20 “ 
9 
5i 
3 
.22 “ 
10 
6 
31 
.25 “ 
12 
7 
4 
.50 “ 
14 
81 
41 
.75 “ 
16 
10| 
51 
1.30 “ 
18 
12 
61 
2.00 “ 
1879. —Crucible, Beaufay covers, round. 
If to 3 4 to 6 in. 
.04| .08 each. 
1880. —Ditto, ditto, triangular, assorted sizes. 
Each, .06 
1881. —Crucibles, iron, with covers, 3 to 5 
ounces. Each, $1.00 
1882. —Crucibles, plumbago, or black lead, 
1880 
j 878 
1879 58 
E. b. benjamin’s descriptive catalogue 
round, with lip suitable for the fusion of the most refractory 
metals, gold, silver, brass, steel, iron, glass, etc., not subject to 
crack, and may be used repeatedly for most metals. 
Nos. 1 2 3 4 6 7 8 x10 12 14 16 18 20 - 
.20 .25 .30 .35 .45 .50 .55 .75 $1.00 1.15 1.31 1.47 1.63 ea. 
1883. —Crucibles, Plumbago, covers, Nos. 1 to 4. 
Each, .10 
Above hi o. 4, .02 extra, each number. 
1884. —Ditto, cast iron. 
I pt. pts. 
$2.50 2.75 each. 
1885. —Ditto, porcelain, from the Royal Berlin fac- 
tory, with covers, glazed inside and out, except the bottom, uni- 
form thinness. 
1882 
NO. 
DIAMETER. 
CONTENTS. 
PRICE. 
000 
1 inch. 
ounce. 
$0.10 each. 
00 
1| “ 
i “ 
.15 « 
0 
1| “ 
.25 « - 
1 
If “ 
.30 « 
2 
' 2f “ 
i « 
.40 K 
3 
2| \ 
2 « 
.50 « 
4 
3 “ 
4 « 
.60 « 
5 
3f “ 
8 « 
.75 “ 
1886.—Crucibles, Meissen, tall form, with covers, glazed through- 
out. 
NO. 
DIAMETER. 
DEPTH. 
CAPACITY. 
PRICE. 
10 
f inch. 
£ inch. 
15 grains. 
$0.10 each. 
9 
1 “ 
t « 
40 “ 
.13 “ 
8 
1* “ 
2| drachms. 
.16 “ 
6 
if “ ■ 
If “ 
6f “ 
.20 “ 
5 
It “ 
If “ 
If ounce. 
.26 « 
4 
2| “ 
if “ 
2 “ 
.32 « 
3 
2| “ 
2 “ 
3 “ 
.40 “ 
2 
2f “ 
2f “ 
4 
.50 “ 
1 
3 “ 
2f “ 
6 “ . 
.75 “ 
1887.—Crucibles, unglazed, semi-porcelain, round, tall, with lip 
and covers. 
Nos. 123456789 10 11 
Capacity, 
Price, .15 .20 .25 .35 .40 .45 .55 .65 .75 .85 $1.00 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
59 
1887a.—Charcoal Moulds, oblong, of wood. Ea. $1.25 
1889 
1891-92 
1893 
1895 
1896 
1909 
1888.—Crucibles, full nests of the above, as 1887. Each, $5.00 
1889 .—Ditto, glazed, porcelain, flat bottom, with covers. 
, 6 8 12 16 oz. 
.40 .45 .55 .65 each. 
1890 .—Ditto, unglazed, biscuit ware, conical form, perforated cover 
and gas reduction tube. 
Nos. 2 1 
.40 ' .50 each. 
1891. —Ditto, conical form, of biscuit, flat bottom, and flat cover, 
perforated to permit the escape of gases, used for fusing nitrate 
of silver. 
1| 1| in. 
.25 .30 each. 
1892. —Ditto, tubes, for the above. Each, $1.25 
1893. —Ditto, Platinum, of the best French hammered, which is 
generally conceded to be superior to the English in quality. 
| i f 1 H 2 oz. 
According to quantity. Per gramme, .40 to .45 
1894. —Ditto, Silver, 2, 4, 6, 8 ounces. Per oz., $5.50 
1895. —Ditto, Metallurgists, or poellons, of fire clay. Each, .20 
1896. —Ditto, Sand, or Hessian, in nests, small fours. Per nest, .05 
1897. —Ditto, ditto, small fives. “ .05 
1898. —Ditto, ditto, large fours. “ .14 
1899. —Ditto, ditto, large fives. “ .15 
1900. —Ditto, ditto, round sixes. “ .20 
1901. —Ditto, ditto, triangular sevens. “ .30 
1902. —Ditto, ditto, ditto, eights. .35 
1903. —Ditto, ditto, single No. 8. Each, .25 
1904. —Ditto, single French No. 7. “ .25 
1905. —Ditto, ditto, No. 4. Per 100, $10,00 
1906. —Crucible Covers, sand or hessian, small. Each, .10 
1907. —Ditto, ditto, large, round. “ .40 60 
E. b. benjamin’s descriptive catalogue 
1908. —Crucibles, roasting. Per doz., .75 
1909. Crucible Moulds, of boxwood, for making charcoal cru- 
cibles, for quantitative blow-pipe assays. Each, .75 
1916 
1914 
1910 
1911 
1912 
1915 
1917 
1910. —Ditto, ditto, Plattner’s, of brass, in four pieces, for making 
small crucibles of clay. Each, $4.25 
Capsules, blow-pipe. See Mixing Capsules. 
1911. —Crucible Supports, of fire clay, for supporting crucibles 
in a furnace, to keep them at a distance from the grate. 
Each, ,10 
Ditto, Tongs. See Tongs. 
1912. —Cryophorus, Wollaston’s, double bulb. $2.00 
1913. —Ditto, ditto, smaller, or single bulb. 1.75 
1914. —Crystal Drainers, conical. 
3 4 5 in. 
.50 .55 .75 each. 
1915. —Ditto, ditto, hemispherical. 
3 4 5 6 in. 
.30 .40 .50 .70 each. 
1916. —Crystallizing Dishes, of glass, on three glass feet. 
3 3| 3f in. 
.50 .60 .75 each. 
1917. —Ditto, ditto, round, of thin Bohemian glass, flat bottom, 
with perpendicular sides, in nests of 9. Per nest, $2.00 
In nests of 4, the smallest. “ .75 
1918. —Crystallizing Dishes, of porcelain, large oval shape, with 
cover. Each, $5.00 
Crystallizing ditto. See flat bottom evaporating dishes. OP CHEMICAL AND PHYSICAL APPARATUS. 
61 
Crytallizing Kettles. See kettles. 
Cubic Centimetre Flasks. See Litre flasks. 
1919 
1923 
1924 
1926 
1927 
1930 
1928 
1931 
1921 
1922 
1929 
1932 
1919. —Cupels, of pure French bone-ash, from the same manu- 
facture as those used in the French mint; each cupel being 
carefully wrapped in cotton, and then enclosed in paper. 
Nos. 12345678 
i i 1 If H If in- 
Price, .35 .45 .50 .60 .75 .95 81.25 2.25 per doz. 
1920. —Cupel Holders, or Trays, of iron, containing 12 partitions 
for holding cupels when several assays are under examination. 
Each, $1.00 
1921. —Ditto, Moulds, of brass, used in forming the cupel. 
Up to No. 5, $2.50; larger, $3.50 to 5.00 
1922. —Ditto, ditto, of steel, Plattner’s, for cupellation before the 
blow-pipe, consisting of two cupel moulds, different sizes, with 
corresponding pestles and a support; the cupels are exposed 
to the flame upon the moulds. Each, $2.75 
Ditto, Furnace. See Furnaces. 
1923. —Cupping Glasses. French. Per doz., $1.25 
1924. —Cups, annealing, American. “ 1.00 
1925. —Ditto, ditto, French. “ 2.50 
1926. —Ditto, porcelain, for feeding the sick and infants, plain. 
Per doz., $2.50 
1927. —Ditto, ditto, stout. “ 3.00 
1928. —Ditto, ditto, covered, and swan neck. “ 4.50 
1929. —Ditto, for medicine, small. “ 3.00 62 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
1930. Cups for Medicine, larger. Per doz. $3.50 
1931. —Ditto, ditto, mounted on feet. “ 6.00 
1932. —Ditto, ditto, scoop shape. “ .75 
1933 
1940 
1941 
1942 
1943 
1933. —Ditto, for Seidlitz’s powders, of porcelain, having two par- 
titions, one side to receive the acid and the other the salts, so 
that they become mixed in drinking or pouring out, producing 
constant fermentation. Each, .75 
Ditto, porous. See Cells, porous. 
1934. —Cutting Pliers, steel, ordinary « .75 
1935. —Ditto, ditto, extra strong, for crushing minerals. “ $1.50 
1936. —Cuvettes, or oblong drainers. “ .75 
1937. —Ditto, Daguerrian, of fine Royal Berlin uorcelain, having 
lip in one corner, about 6 to 9 inches. Each, $2.00 
Cylinders. See Porous Cells. 
1938. —Ditto, glass, opened at either end. 
4x6 4x7 4x9. “ .40 
1939. —Ditto, ditto, 3fx6, 3|x8f. “ .50 
1940. —Ditto, plain, on glass foot, flanged tops. 
4 6 8 10 12 in. 
.35 .40 .50 .55 .60 each. 
1941. Ditto, tall, straight side, and ring around the top, for observ- 
ing color of gases, viz., chlorine, etc., 30 x 3 inches. Each, $2.00 
1942. Ditto, plain, on glass foot, with ring around the top, 
roughed for glass covers. 
5 6 8 10 12 13 15 20 in. 
.30 .35 .37 .45 .50 .52 .55 .75 each. 
1943. —Ditto, ditto, pouring, lipped, on glass foot. 
5 6 8 10 12 13 15 20 in. high. 
.30 .35 .40 .50 .55 .57 .60 .70 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
63 
1944. —Cylinders, pouring, on wood foot, for specific gravity hy- 
drometers, with flanged tops. Per doz., $6.00 
Ditto, ditto, with glass foot, for mercury. See Mercury Jars. 
1945. —Ditto, glass, graduated into cubic inches. 
5 12 20 30 50 c. in. 
.70 $1.15 1.65 2.25 3.25 each. 
1946 
1949 
1950 
1954 
1946. —Ditto, ditto, with lip, graduated into cubic centimetres 
5 10 25 50 100 200 250 300 500 1000 centimetres. 
.50 .60 .75 $1.12 1.75 2.25 2.50 2.75 3.00 3.50 each. 
1947. —Ditto, ditto, French. 
250 c. c. $2.25 500 c. c. $3.25 each. 
1948. —Ditto, on glass foot, with pouring lip and double graduation. 
25 50 100 200 250 500 1000 c. c. 
$1.20 1.40 2.00 2.25 2.50 3.50 4.00 each. 
1949. —Ditto, ditto, stoppered, or mixing bottles. 
25 50 100 200 500 1000 c. c. 
4 1111 1 
$1.30 2.00 2.25 2.75 3.75 4.50 each. 
1950. —Leslie’s, 100 c.c. in 10. Each, $2.25 
1951. —Ditto, graduated, of glass, pouring lip and wooden foot. 
250 500 1000 gr. 
5 5 
$1.25 1.50 2.00 each. 
1952. —Ditto, French, of exactly even width inside, and carefully 
graduated, very useful where exact results are demanded. 
10 15 25 grammes. 
1953. —Ditto, of glass, with pouring lip. 
500 1000 grains. 
.75 $1.00 each. 64 
E. b. benjamin’s descriptive catalogue 
1954. Cylinders, for electric machines. 
10 to 12 13 to 15 18 in. 
$1.50 2.00 2.50 each. 
1955. —Cylinder, 100 fluid grains, graduated to 10 fluid grains 
stoppered. Each, $1.50 
1956. —Ditto, 500 grains in | grains, stoppered, glass foot. “ 2.25 
1957. —Ditto, 500 grs., without stopper, pouring lip, “ “ 1.50 
1958. —Ditto, 1000 grains, “ “ “ “ 2.25 
Carre’s Ice Freezer. See Ice. 
1959. —Day and Night Thermometer, of glass. 4.00 
1960. —Davy’s Safety Lamp, for coal miners, with key. 5.75 
1961. —Decanting Jar, porcelain, with six tubulatures and two 
knobbed handles, for the washing of powders and their separa- 
tion into different degrees of fineness, and for decanting liquids. 
8 16 20 25 lbs. 
$4.00 6.00 7.50 9.00 each. 
1962. —Decanting Jars, for Collodion. 
1963. —Ditto, Syringes, glass. Each, .25 to $1.00 
1964. —Ditto, Tubes, 6in. long, -Jin. bore, both ends 
smooth, for decanting small quantities of liquid 
at a time, so not to disturb the sediment. Ea., .05 
Decimal Scales. See Centimetre Measures. 
Decigallon Measure. See Metrical Equivalents. 
Decoction Strainers. See Emulsion Mortars. 
Decomposition of Water Apparatus. See Water De- 
composition. 
1965. —Deflagrating Covers, of Tin. 
Each, .10 
1966. —Ditto, ditto, with spoon. “ .25 
1967 .—Ditto, ditto, and hook. “ .20 
1968. —Ditto, ditto, of brass. “ .50 
1969. —Ditto, ditto, with spoon. “ .75 
1970. —Ditto, hooks. “ .05 
1971. —Ditto, Globes, for burning phos- 
phorous and oxygen gas. 
9 12 15 in. 
$1.25 2.25 3.25 each. 
Ditto, Jars. See Bell Jars. 
1972. —Ditto, Stands, or tripods of Iron, to support the defla- 
grating globe when reversed. Each, $1.00 
1961 
1939 
1970 
1971, 1972, 1974 OF CHEMICAL AND PHYSICAL APPARATUS. 
65 
1973. —Deflagrating Taper Holder, or socket. .40 
1974. —Ditto, Cup, on metallic stand, with heavy iron foot, for 
holding phosphorous, to burn under an inverted globe contain- 
ing oxygen gas. $1.50* 
Dentists’ Furnace. See Furnaces. 
1975. —Dessicators, of glass, composed of a small glass jar, 
roughed on the top, and a flat ground glass cover. Each, $1.00 
1978 
1976 
1977 
1979 
1982 
1983 
1985 
1981 
1976. —Ditto, composed of two 16-ounce jars, nicely ground and cut 
glass, with their necks ground together, for drying substances 
in a confined atmosphere over sulphuric acid; also for cooling, 
crucibles before weighing, flat, polished top. Each, $2.50-' 
1977. —Ditto, ditto, round top. “ 2.00> 
1978. —Dessicating Apparatus, consisting of bell jar, resting on 
a flat glass slab, containing a porcelain acid dish and porcelain 
capsules, or watch glasses 
6 8 in.. 
$3.00 5.00 each. 
Ditto, Baths. See Drying Baths. 
1979. —Dessicator, oblong, consisting of glass plate, tray, and 
oblong bell receiver, ground to fit exactly, to keep substances 
dry while weighing. $2.00 
1980. —Dessicators, Porter’s. Each, 1.50 
1981. —Ditto, Schrbtter’s, to insert into the tubulure of an open 
mouth bell jar, for cooling substances in dry atmospheric air 
at ordinary atmospheric pressure. $1.50 
Dessicating Ovens. See Drying Ovens. 
1982. —Ditto, Pans, three partitions, 5 inches diameter. Each, 1.25 
1983. —Ditto, Pans, six partitions. 
4f 5| 6| in. diam. 
$1.15 1.30 1.50 each. 66 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
1984. —Dessicating Plates, porcelain, perforated, 5 to 6 inches. 
Each, .75 
1985. —Ditto, ditto, earthen, perforated, 3 to 5 inches, for drying 
crystals, etc. Each, .50 
1986. —Ditto, ditto, porous, 3£ to 5£ inches. “ 50 
1987. —Ditto, Apparatus, Fresenius’, complete. $20.00 
1988. —Ditto, ditto, Fresenius’, for drying at 100 deg. Celsius, con- 
sisting of a copper water bath, drying tube, a flask to contain 
sulphuric acid, etc. $7.50 
1992 
1989 
1990 
1995 
1999 
2002 
1989. —Dialyser. Small, .50 Large, .75 
1990. —Ditto, with jar fitted, extra. $1.25 
Diamond Models. See Crown Diamonds. 
Ditto, Jar. See Electric Diamond Jar. 
1991. —Ditto, Sparks, for burning in oxygen Prices vary 
according to the size and quality required. 
1992. —Diamonds, for glass cutting, whole set of keys, complete. 
Each, $5.00 
1993. —Ditto, for writing on glass, with bone handle and silver 
ferule. Each, $3.00 
1994. —Ditto, ditto, with ivory handle. “ 6.00 
1995. —Ditto, ditto, with larger spark, size No. 1. “ 7.50 
1996. —Ditto, ditto, with still, larger spark, size No. 2. “ 12.00 
1997. —Ditto, ditto, with very long spark, fine ivory handle. 
Each, $20.00 
1998. —Diamond Mortars, of steel, as used in blow-pipe analysis 
for crushing minerals, Plattner’s usual form. Each, $5.00 
1999. —Ditto, ditto, with brass collar and screw to prevent any 
escape of the powder when choice specimens are being crushed. 
Each, $7.50 
2000. —Differential Thermometers, Leslie’s, with glass con- 
nections between each limb and stopcock in the center. 
Each, $4.00 
2001. —Ditto, ditto, plain. 82.50 to 3.50 OF CHEMICAL AND PHYSICAL APPARATUS. 
67 
Decomposition of Water by Galvanism. See Bunsen’s 
Apparatus, under Apparatus. 
2002.—Digestors, semi-Berlin, flat bottom, 2 in. diam’r. Each, .12 
2012 
2002 
2005 
2006 
2003. —Ditto, Meissen. Each, .18 
2004. —Ditto, Royal Berlin, with oval bottom, 
flaring top. Each, .50 
2005. —Ditto, Plattner’s, flat bottom, flaring top. 
2 2| 4 in. 
.25 .30 .50 each. 
Ditto. See also Evaporating Kettles. 
2006. —Dippers, hammered copper, without 
seam, round, iron handle, 1 litre capacity. 
Each, $2.00 
2007. Ditto, iron, for pouring metals in assay. 
Bowl, 3 in. 5 in. diameter. 
.40 .50 each. 
2008. —Ditto, tinned, shallow, with long handles, for pouring. 
5 5| 6 in. 
.60 .70 .80 each. 
Ditto, porcelain. See Casseroles. 
2009. —Dipping Needle, small, with brass support $1.50 
2010. —Ditto, ditto, larger. Each, $2.25 to 5.00 
2011. Dishes, iron, countersunk, tinned, French, conical shape, 
with handles on either side, used for boiling sacharine matter, 
5 in. deep and 10 in. diameter. Each, $1.50 
2012 .—Ditto, earthen, deep, round, and flat bottom, for holding 
acids and acidulous solutions. Imported to order. 
10 15 20 gallons. 
$10.00 12.00 15.00 each. 
2013. —Ditto, porcelain, round, with lip, for receiving the ashes of 
the burning filter. Each, $1.00 
2014. —Ditto, ditto, smaller, without lip. “ .75 
2007 
2008 68 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2015. —Dishes, Draining, porcelain, to stand under bottles con- 
taining acids or other liquids. 
2 2| 2f 3 3f 4 4| 5 in. 
.08 .10 .12 .15 .18 .20 .22 .25 each. 
2016. —Ditto.Roasting, of porous clay, sizes, 1£ in. to 10 inches. 
Per doz., .75 to $5.00 
2017. —Displacement Apparatus, consisting of a funnel and 
bottle fitted bv means of a cork. 
1 2 litres. 
.60 .75 each. 
2018. —Ditto, ditto, consisting of a separatory funnel fitting into 
a glass receiver by means of a tightly fitting cork. 
pts. qts. % gall. 
$2.50 3.50 4.50 each. 
2019 
2021 
2022 
2023 
2019. —Ditto, ditto, with ground joint of light blown glass, without 
stopcock, 6 ounces. .75 
2020. —Ditto, ditto, of glass, consisting of separatory funnel, fitting 
into a glass receiver with ground joint. 
pts. qts. | gall. 
$4.00 5.00 6.00 each. 
2021. —Ditto, ditto, consisting of a separatory funnel, by a glass 
ground joint fitted into a separatory bottle, with a ground glass 
stopcock at foot. 
pts. qts. | gall. 1 gall. 
$6.00 7.00 8.00 12.00 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
69 
2022. —Displacement Apparatus, Guibourg’s, consisting of an 
oblong glass vessel, stoppered, and with stopcock in the tube, 
fitted by a ground glass joint into a receiver having ground 
stopcock at foot; capacity of receiving vessel, 1| gallons. 
Each, $12.00 
2023. —Ditto, ditto, ditto, with a communicating tube between the 
displacer and the receiver. Each, $14.00 
The joints of the foregoing apparatus are double ground 
with the finest emery. 
2024 
2026 
2024. —Distilling Apparatus, for distilling water, spirits, oil, 
etc., consisting of a polished copper countersunk still, tinned 
inside, and a worm of block tin enclosed in a tub of zinc, having 
a receiving and discharging tube. 
1 2 3 5 galls. 
$12.00 16.00 20.00 30.00 each. 
2025. —Ditto, ditto, nickleized. 
1 2 3 5 galls. 
$14.00 19.00 25.00 35.00 each. 
2026. —Ditto, with water bath, having a tight fitting water joint 
and jacket, steam escape, water supply pipe, with thermometer, 
and extra handles. 
1 2 3 5 10 galls. 
$24.00 32.00 40.00 60.00 80.00 each. 
Ditto, ditto, Mfirrle, for the use of pharmaceutists and 
chemists, complete. See Mtirrle’s Apparatus, at the close of 
this volume. 
2027. —Distilling Flasks, for fractional distillation. 
Per doz., $1.50 
2028 .—Ditto, Apparatus, of iron, with safety valve. 
pts. qts. 1 gall. 
$3.75 4.50 6.00 each. 
Ditto, Retorts. See Retorts. 
2027 70 
E. B. benjamin’s descriptive catalogue 
2029 
2031 
2032 
2033 
2029. —Distilling Apparatus, Wurtz’s, for fractional distillation, 
complete, with thermometer. $10.00 
2030. —Ditto, ditto, glass part only. 2.50 
2031. —Doebereiner’s Hydro Platinic Lamp, for generating 
hydrogen, and producing an instantaneous light by throwing 
a jet of the same upon a piece of spongy platinum; a very 
convenient lamp for smokers, etc., of German embossed glass. 
$2.50 
2032. —Ditto, ditto, of German plain glass. 3.00 
2033. —Ditto, ditto, French form, having a small lamp attached 
which is thrown before the light by the same movement by 
which the jet is projected; plain. $7.00 
2034 
2035 
2040 
2041 
2041a 
2034—Ditto, ditto, vase shape. 10.00 
2035. —Dome, porcelain, for Bunsen’s lamp. 1.00 
Douceleur Apparatus. See Apparatus. Drainers. See 
Crystal Drainers. 
2036. —Drawing Tools, in a small box. containing dividers, 
pencils, etc. $1.00 to 4.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
71 
2037. —Drawing Curves. Each, .25 
2038. —Ditto, Protractors, horn. “ .75 
2039. —Dropping Glasses, Schuster’s, plain. “ .20 
2040. —Ditto, ditto, with ground stopper. <£ .25 
Ditto, Bottles. See Acid Bottles. 
2041. —Ditto, Pipette, with bulb top, covered with rubber film, 
graduated 100 c. c. .75 
2041a.—Ditto, Pipettes. See Pipettes. 
2042. —Ditto, Tube, plain, 4 to 10 inches. Each, .10 to 25 
Drying Apparatus. See Dessicating Apparatus. 
2043. —Drummond Lamp, new French form, for petroleum. 
815.00 
2044 
2044. —Drying Baths, copper, 10 inch, with double walls and 
two tubulatures, one for thermometer and the other for escape, 
including thermometer. Each, 815.00 
2045. —Ditto, ditto, soft, soldered. 
8 10 12 inchs. 
89.00 13.50 18.00 each. 
2046. —Ditto, ditto, 8 in. with thermometer. “ 10.00 
2047. —Ditto, ditto, 10 inch. “ 15.00 
2048. —Ditto, 12 inch. “ 19.00 
2049. —Ditto, ditto, nickleized. Each size additional. 2:00 
2050. —Ditto, ditto, of tin. Each, 2.50 
2051. —Ditto, ditto, porcelain, for drying filters over hot water. 
Each, 81.00 
2052. —Drying Bath Regulator, Kemp’s, improved. “ 3.00 
2053. —Ditto, ditto, with Bunsen’s late improvement, consisting of 
an additional spring to steady the pressure of the mercury. 
Each, 83.50 
2052 
2054 72 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
2054. Drying Bath Electrical Regulator, for keeping the 
heat of the water bath constantly at an even temperature. 
2055. —Ditto, Bottles, Barker’s, small size. Each, $1.00 
2056. —Ditto, ditto, large size. “ 1.50 
2057. —Ditto, Oven, or hot air bath, having single walls and de- 
tached perforated shelf on legs, 8 inches. $7.00 
2059 
2058 
2060 
2058. —Ditto, ditto, with thermometer. $8.50 
2059. —Ditto, ditto, Rammelsberg’s conical shape, of copper, hard, 
soldered, having detached shelf. 
Small size, larger size, 
$3.00 4.00 each. 
2060. —Ditto, Plates, porous clay. Each, .50 
2061. —Ditto, Tubes, Liebig’s. Each, .50 
2062. —Ditto, ditto, Mitscherlich’s. “ .60 
2063. —Druggist Mill, for grinding roots, herbs, etc. $15.00 
2064. —Dutch Metal. Per book, .10 
2065. —Dyers’ Cloth, for mordaunting. Per yard, $2.00 
Dye Pots. See Deep Casseroles. 
Earthen Dishes, perforated. See Dishes, Dessicating 
Apparatus. 
2061 
2062 OF CHEMICAL AND PHYSICAL APPARATUS. 
73 
2066 
Holtz’s wonderful Induction Electrical Machine as improved 
by Borchard, and first brought into the United States for sale, 
by myself, in 1869. It is the most wonderful discovery, in regard 
to the length of the spark yet known—a spark 6 in. long having 
been obtained from a 12 in. plate machine, and glass perforated 
in. thick. The remarkable machine, imported by myself, now in 
the possession of Prof. Blake, of Brown’s University, has a 30 in. 
plate, and has produced a spark about 16 in. It was the result of 
the combined intelligence of Messrs. Holtz, Poggendorf, Rienz, and 
Dove; was manufactured expressly for me by Mr. Borchard, and is 
believed to be the best single machine of the kind in the world 
for practical purposes. It must be borne in mind that the ma- 
chines I import are all made for me by the inventor, and the secret 
of the long spark has never yet been discovered by the greatest 
savans in Europe, and I presume that it will not be cpiestioned but 
that those made by the inventor himself must inevitably be far 
superior to any imitations or copies; nevertheless, should my cus- 
tomers desire them, I am prepared to furnish imitations of this 
celebrated machine as low as any house in America. It should be 
borne in mind that these machines, with the extra appurtenances, 
can illuminate large Geissler tubes, pierce thick glass, show rotation 
by electricity, manufacture Ozone, etc. They are light and portable, 
and easily excited by the use of a sheet of hardened vulcanized 
rubber and a cat skin, and when once excited, are well known to 
retain their electricity from four to five hours. The new and 
ELECTRICAL AND GALVANIC APPARATUS. 74 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
ingenious collecting and condensing apparatus, invented by C. Van 
Brunt, Esq., of this country, consisting of a multiplication of the 
points for the collection of electricity, and a tin foil condenser, as 
described in the journal of Franklin Institute, may be attached to 
this machine at my establishment. 
2066. —Single machines, Borchard’s make, 30 in. plate. $225.00 
2067. “ “ “ “ 24 in. “ 175.00 
2068. “ “ “ “ 20 in. “ 140.00 
2069. “ “ “ “ 18 in. “ 100.00 
2070. “ “ “ “ 14 in. “ 65.00 
2071. —Double machines, Borchard’s make. 
2072. —Dielectric Machine, as constructed by M. Carre, having 
revolving wheels of hardened rubber, the electricity being sup- 
plied by friction on stationery rubbers located in front, so that 
electricity may be generated in every kind of weather. This 
machine is the most simple and powerful of the static con- 
duction machines; being scarcely affected by atmospheric 
moisture, it becomes charged in a few seconds, and sustains 
its action indefinitely. With induction plates from 44 to GO 
2071 OF CHEMICAL AND PHYSICAL APPARATUS. 
75 
Electricity.—Continued. 
centimetres, it gives a constant flow of sparks from 12 to 28 
centimetres; it illuminates brilliantly Geisler tubes of over a 
yard connection; it pierces glass from 8 to 12 millimetres 
thick; in less than a minute the medium size machine will 
charge to overflowing a battery of 12 large jars, etc. It also 
performs the usual experiments of large coils, etc. 
The price of a small machine giving from 30 to 40 milli- 
metre sparks, is $30.00 
2072 
2073. —Dielectric Machine, No. 1, plates 32 to 44 millimetres. 
$125.00 
2074. Ditto, No. 3, “ 44 to 60 « 200.00 
2075. —Plate Electric Machine, with prime conductor of brass, and 
supported by pillars of glass, plate 24 in. diameter. $65.00 
2076. —Ditto, 20 inches. 45.00 
2077. Ditto, 16 « 35.00 
2078. —Ditto, 12 “ with japanned prime conductor. 25.00 
2079. —Electrophorus. 9.00 
2080. —Pith Ball Electrometer. 1.00 
2081. —Gold Leaf “ 6.00 
2082. —Head of Hair. 1.50 
2083. —Leyden Jar, pint. 1.50 
2084. —Ditto, ditto, quart. 2.00 
2085. —Ditto, ditto, | gallon. 2.75 
2086. —Ditto, ditto, 1 gallon. 3.25 
2087. —Set of Leyden Jars. 6.50 
2080 
2087 76 
E. b. benjamin’s descriptive catalogue 
Electricity.—Continued. 
2088.—Electrical Batteries, in walnut boxes. 
4 6 12 qt. jars. 
$11.00 16.00 28.00 each. 
(Other sizes in proportion.) 
2088 
2089 
2090 
2099 
2101 
2089. —Diamond Jars, 2 quarts. Each, $4.00 
2090. —Plain Discharger, glass handle. 2.25 
2091. —Jointed Discharger. 5.00 
2092. —Universal Discharger. 10.00 
2093. —Electrometer Jar, quart. 2.50 
2094. —Leyden Jar, with movable coatings. 3.50 
2095. —Ditto, ditto, with bells, 6.00 
2096. —Electrical Bells, 2 bells. 2.00 
2097. —Ditto, ditto, 3 bells. 3.00 
2098. Hiero’s Fountain. 18.00 
2099. —Electrical Flier. 1.25 
2100. —Insulating Stool. 5.00 
2101. Spotted Tube. $3.00 to 5.00 
2102. —Luminous Plate. 2.00 to 2.50 
2103. —Illuminating Egg Stand. 2.00 
2104. —Amalgam. Per box, .40 
2105. —Biot’s Hemispnere, for showing electricity resides only on 
the surface. $8.00 
2106. —Metallic Plates, for dancing figures to suspend. 1.25 
2107. —Ditto, ditto, on insulated stand. 6.50 
2108. —Ditto, ditto, larger, with double columns. 12.00 
2109. —Thunder Houses, mahogany. 8-00 
2110. -Gas Pistol. 1.25 
2111. —Dancing Images, per pair, 1.0Q. OF CHEMICAL AND PHYSICAL APPARATUS. 
77 
Electricity.—Continued. 
2103 
2108 
2112 
2121 
2112. —Electrical Orrery. $4.50 
2113. —Pith Balls, per dozen, .25 
2114. —Electrical Sportsman, Jar and Bird. 6.00 
2115. —Ditto, Pistol. 2.50 
2116. —Miser’s Plate. 2.50 
2117. —Rod of Glass, for illustrating vitreous excitation. 1.00 
2118. —Ditto, Shellac, for ditto, ditto. 2.00 
2119. —Galvanometer, Astatic. 15.00 
2120. —Ditto, Tangent. 10.00 
2121. —Ditto, Sensitive. $35.00 to 60.00 
2125 
2122 
2123 
2126 
2122. —Thermo Electric Pile. $35.00 
2123. —Contracting Helix. 5.50 
2124. —Helix on Stand, 3 poles. 4.50 
2125. —Ditto, with ring armature, or magic circle. 6.00 78 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
Electricity.—Continued. 
2126. —Page’s Revolving Electro Magnet. $8.00 
2127. —Model of Telegraph, with spool and signal key. 8.00 
2128. —Telegraph Clock-work. 45.00 
2129. —Induction, or RuhmkorfFs Coils, capable of throw- 
a very small spark. $7.50 
2133 
2140 
2140 
2130. —Ditto, ditto, ditto, in. spark. $12.00 
2131. —Ditto, ditto, ditto, | in. « 15.00 
2132. —Ditto, ditto, ditto, £ in. „ 30.00 
2133. —Ditto, ditto, ditto, 1 in., with contact breaker. 60.00 
2134. —Ditto, ditto, ditto, 2 in. “ “ 100,00 
2135. —Ditto, ditto, ditto, 4 in. “ “ 200,00 
2136. —Ditto, ditto, ditto, 6 in. “ “ 300.00 
2137. —Ditto, ditto, ditto, 9 in. “ “ 400.00 
2138. —Ditto, ditto, ditto, 12 in. “ “ 500.00 
2139. —Current Changers. Each, $3.50 to 10.00 
2140. —Geissler’s Tubes, plain, each tube marked with the name of 
the gas it contains. Prices, from $1.25 to 30.00 
2141. —Ditto, ditto, for use with the spectroscope. Each, 3.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
79 
Electricity.—Continued. 
2142. —Ditto, Vacuum Tubes, in which the vacuum is so perfect 
that the current will not pass. Each, $6.00 
2143. —Ditto, tubes in form of a rose. $6.00 to 18.00 
2144. —Ditto, ditto, form of a lyre. Each, 7.00 
2145. —Ditto, ditto, form of a star. “ 5.00 
2146. —Ditto, ditto, form of a U, very brilliant. “ 9.00 
2147. —Ditto, ditto, form of a Marguerite. “ 5.50 
2148. —Geissler’s Tubes, form of a cross. $5.00 to 7.50 
Various other forms; single and double spirals, conical and 
flat spirals, filled and empty. These tubes were selected by 
myself in my late trip to Europe, and are of the very best 
make, and brilliant color. 
2149. —Geissler’s Tube, filled with mercury, showing the effect of 
phosphorescent light by friction. $5.00 
2150. —Geissler’s Tubes, Reflectors, showing small tubes, and multi- 
plying the number by reflection. Each, $5.00 
215OA.-Geissler’s Tube Revolving Apparatus, for revolving Geissler’s 
Tubes, by the use of Electricity. The magnets cause the motion 
to be uniform and regular. Price, $20.00 
2151. —Geissler’s Tube Supports, of brass, on mahogany base, with 
shifting clamps to hold different size tubes. Each, $10.00 
2150 
2150a 80 
e. b. benjamin’s descriptive catalogue 
Electric Batteries. 
Salts of Mercury for Batteries. See Chemicals. 
2152 
2152. —Bunsen’s large Cells, with rolled zinc plates | in. thick and 
French sawed carbons, jars 8 in. high. Each, $5.00 
2153. —Ditto, ditto, ditto, jars 6 3.50 
2154. —Ditto, ditto, ditto, jars 5 *• “ 3.00 
2155. —Daniel’s Batteries. “ 2.50 
2156. —Grove’s ditto. “ 2.50 
2157. —Smee’s ditto. “ 2.50 
2151 
2162 
2161 
2158.—Leclanche’s Constant Battery, consisting of a rod of car- 
bon placed in a porous pot, which is then packed tightly with 
a mixture of peroxide of manganese and coal, outside of which 
is a glass jar, in a corner of which is placed a rod of zinc. The 
exciting liquid is a solution of sal ammoniac. This battery is now 
the most popular one of its kind in both Germany and France. OF CHEMICAL AND PHYSICAL APPARATUS. 
81 
Electricity.—Continued. 
2159. —American Bichromate Battery, improved pattern, quart 
cells. $7.00 
2160. —Ditto, ditto, pint cells. 5.00 
2163 
2164 
2161.—Six cells of the larger battery, with connections complete;, 
arranged in black walnut box, with partitions and' handles, 
convenient for removing on and off the lecture table. $40.00 
The foregoing arrangement of batteries is the most conve- 
nient, cleanly, and available form in use. It is arranged for the 
employment of one solution, which can be kept readily pre- 
pared at hand in a tight, ground stoppered bottle. When the 
battery is not in use, the zinc may be raised above, the solution 
in the jar (which should be only half-filled with the same); 
and when the operator desires to renew the contact, the zinc is 
simply plunged into the fluid by pressing down the sliding rod. 
The top of the battery being always closed by a tight-fitting 
brass cap, no offensive fumes can escape to influence chemicals 
or the atmosphere in the vicinity. The operator will readily 
perceive that one cell can be employed alone, or any number 
to the extent of six. The seasonable employment of the sliding 
rod obviates any danger of shocks in connecting or disconnect- 82 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
Electricity.—Continued. 
ing apparatus with the battery; the power of this battery com- 
bined is about equal to that of ten Bunsen’s large cells, and 
the carbon and zincs can be connected or alternated at pleasure. 
2162. —French form, ditto, large size, holding about 2 litres. 
$10.00 
2163. —Bunsen’s Dipping Battery, consisting of 6 cells, zincs and 
carbons of which are raised and lowered by pulleys. $40.00 
2164. —Ditto, ditto, consisting of two large 3-gallon cells, each cell 
having five zincs and carbons alternated, the whole raised and 
lowered by windlass crank. $50.00 
2165. —Ditto, ditto, three large cells. 65.00 
2166 
2166. —Ditto, Medico-Electric, for use of Physicians and paralytic 
persons. $12.00 
2167. —Electro-Thermal Battery, of bismuth and antimony, oblong 
shape, with jointed support. $30.00 
2168. —Electrical Lamps, Duboscq’s, with clock-work and 
reflectors, complete. 
2169. —Ditto, ditto, Sernn’s, French, with clock-work, complete, 
large size. $450.00 
2170. —Ditto, Browning’s, with automatic regulator, and move- 
ment to adjust the height of the carbon-poles while burning, 
very useful in showing spectra in screen experiments. $30.00 
2171. —Ditto, regulated by hand, with reflector. 15.00 
2172. —Ditto, enclosed in a dark chamber, with reflector. $20.00 
2173. —Electrical Apparatus, with clock-work, for changing 
the current from one battery to another, without disconnecting. 
$50.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
83 
Electricity.—Continued. 
2174.—Electrometer, Thompson’s, with scale and screen, as im- 
proved by Kirchoff. $75.00 
This new and unique form of Electrometer is deserving of 
attention, on account of its extreme delicacy and facility of in- 
dication of very small amounts of electricity, which can also be 
quantitatively measured. Prof. Kirchoff has added a valuable 
and interesting photometric attachment, rendering it a very 
easily read, and most complete instrument. It is certainly a 
great step in advance in the quantitative estimation of elec- 
tricity, and is receiving great attention from the Physicists of 
the old world. (See illustration on next page.) 
2168 
2169 
2175. —Elutriating Apparatus, Schultze’s, for the mechani- 
. cal analysis of soils, clays, ground ores, etc. , Each, $5.00 
2176. —Ditto, Noebel’s Apparatus, for washing soils in analysis. 
Each, $4.50 
2177. —Ditto, ditto, with support. “ 5.50 
21 78.—Ditto. See Decanting Jars. 84 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
2171 
2174 
2175 
2179. —Enamels, French, for enameling jewelry. For gold en- 
amel, white. Per oz. $1.00 
2180. —Ditto, ditto, black. 11 1.25 
2181. —Ditto, for enameling gold—transparent blue, green, ceru- 
lean blue, lapis lazuli, opaque green, and transparent yellow. 
Per oz. $1.50 
2182. —Ditto, ditto, turquoise. Per oz. $3.00 
2183. —Ditto, ditto, transparent red. “ 7.50 
2184. —Ditto, ditto, for enameling copper; deep red, blue, lapis 
lazuli, turquoise, dark green, transparent violet. Per oz. .25 
2185. —Ditto, ditto, for ditto; black, transparent green, clear yel- 
low, deep yellow. Per oz. .50 
2176 OF CHEMICAL AND PHYSICAL APPARATUS. 
85 
2186. —Euamelers’ Files, of hardened steel, for cutting round 
glass tubes. Each, $1.50 
2187. Ditto, Knife, cocoa handle. ■ .50 
2188. —Ditto, Plates, of refractory clay. 
4f 4f 5| • 5| in. 
.15 .18 .20 .25 each. 
2189 
2190 
2191 
2194 
2189. —Endosmosis, apparatus for diffusion of gases, without 
stand and bell-glass. $1.50 
2190. —Eolipile, or Ether Jet, glass apparatus, for showing com- 
bustibility of the vapor of ether. .50 
2191. —Ditto, Lamp, or Spirit Blast blow-pipe of brass, with 
vertical jet. Each, $2.00 
2192. —Ditto, ditto, of tin. “ 1.00 
Eprouvettes. See Test Glasses, and Specimen Tubes. 
Erdmann’s Float. See Burette Swimmers. 
2193. —Ether Distilling Apparatus, consisting of a glass 
retort, receiver, alchohol reservoir, etc., capacity of retort, 
1 qt. 2 qts. 1 gall. 2 galls. 
$3.85 5.50 7.15 10.00 each. 
Ether Bottles. See Bottles. 
2194. —Ditto, Extraction Apparatus, Bohemian, capacity of 
receiver, 2 gallons. Each, $14.00 
2195. —Ditto, ditto. See also Displacement Apparatus. 
2196. Eudiometer, Bunsen’s, 500 millimeters in |. $3.50 86 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
2197 
2196 
2204 
2198 
2199 
2209 
2201 
2202 
2197. —Eudiometer, Hoffman’s, V shape, mounted. $7,00 
2198. —Ditto, Large Lecture, Hoffman’s, mounted on stand. 15.00 
2199. —Ditto, Hoffman’s, with two parallel limbs, one sealed and 
one open. $2.00 
2200. —Ditto, ditto, with parallel limbs, one sealed, and one drawn 
at the top. $2.50 
2201. —Ditto, ditto, with two parallel limbs and one stopcock at 
the bottom. $3.50 
2202. —Ditto, ditto, with two parallel limbs and one stopcock at the 
top, and one at bottom. $4.00 
2203. —Ditto, Ure’s, straight, 200 c. c. in |. 2.00 
2204. —Ditto, ditto, IT form, 60 c. c. in I. 3.50 OF CHEMICAL AND PHYSICAL APPARATUS. 
87 
Evaporating Dishes, of glass, straight sides and flat 
bottoms. See Crystallizing Dishes. 
2205.—Ditto, Bohemian glass, round bottom, nests of 4. $1.25 
2206 
22US 
2210 
2213 
2216 
2206. —Ditto, ditto, ditto, lipped, in nests of 6. 1.50 
2207. —Ditto, ditto, of iron, glazed inside and out, with lip, deep 
and hemispherical. 
5 6 7 in. 
$1.25 1.35 1.75 each. 
2208. —Ditto, of platinum. 
2 21 3 in. 
According to quantity, per gramme, .35 to .40 
2209. y—Ditto, silver. 
2 21 3 in. Per oz., $4.50 
2210. —Ditto, of Royal Berlin porcelain, with spout glazed inside 
and out, except the bottom. 
Nos. 00 01234567 
Diam. 11 oz. 2 3 4 6 8 10 14 24 
.18 .22 .28 .35 .40 .45 .62 .75 .95 
8 9 10 11 
45 oz. 2 qts. 31 6 
$1.30 2.00 3.00 3.85 each. 
2211. —Ditto, ditto, nests of 7, from 00 to 5. $2.25 
2212. —Ditto, ditto, nests of 6 to 11. 11.00 
2213. —Ditto, ditto, Royal Berlin, without lip, 3 inches diameter. 
Each, .20' 
2214. —Ditto, of glazed, Royal Saxon, without lip. 
2 in. 3 in. 
.15 • .35 each. 
2215. —Ditto, ditto, with lip glazed, inside and out. 
Nos. 5 4 3 2 1 0 00 000 
$1.10 1.40 1.75 2.00 2.75 4.00 6.00 10.00 each. 
2216. —Ditto, ditto, Royal Berlin, porcelain, shallow form and flat 
bottom, stout, glazed throughout, except the bottom, with, spout. 
Nos. 1 2 3 4 5 6 7 
1 H 3 4f 7 10 16 oz. 
.22 .30 .35 .42 .50 .66 .83>eaah. 
2217. —Ditto, full nests of the above. $2.75 88 
E. b. benjamin’s descriptive catalogue 
2218. —Evaporating Dishes, French, hemispherical, glazed 
throughout, except the bottom, of very thin white porcelain. 
40 55 70 84 97 110 m.m. 
.25 .30 .40 .50 .60 .75 each. 
2219. —Full sets of the above. $2.50 
2220. —Ditto, thin semi-porcelain, watch-glass form, with spout, 
glazed inside. 
Nos. 1 2 3 v 4 5 6 
.15 .18 .20 .25 .30 .40 each. 
2221. —Full nests of above. $1.00 
2222. —Ditto, ditto, deep hemispherical. 
Nos. 123456789 
1| 2 3 4 6 8 10 14 16 oz. 
.15 .20 .25 .30 .35 .45 .50 .55 .70 each. 
2223. —Sets of 6 of the above. $1.25 
2224. Ditto, 9 “ 2.75 
2218 
2225. —Ditto, ditto, watch-glass form, stouter, glazed inside. An 
excellent dish for quick evaporation. 
Nos. 6 7 8 9 10 11 12 13 14 15 16 
Cap’y 
.45 .55 .65 .75 .85 81.00 1.30 1.75 2.10 3.50 5.00 ea. 
2226. —Ditto, ditto, Thuringian semi-porcelain, lipped, and heavy 
rim around the top. 
Nos. 8 9 10 11 12 13 15 16 18 
24 oz. 1 qt. 1| 2 3 1 gall. 2 3 5 
.75 .85 81.00 1.20 1.75 2.10 3.50 5.00 9.00 each. 
2227. —Ditto, semi-porcelain, flat bottom, round lip, and glazed 
inside and out, except the bottom. 
Nos. 4 3 1 
81.00 1.25 2.00 each. 
2228. Ditto, with rim around the top, sharp lip. 
11 11| 12| in. 
81.50 1.75 2.25 each. 
Ditto, ditto. See also Capsules. 
2229. —Ditto, or gold washing pans, 30 inch diameter, of Russian 
iron, countersunk. Each, 81.00 
2230. —Ditto, ditto, or trays of lead, small. “ .50 
2225 
2226 
2227 
2228 OF CHEMICAL AND PHYSICAL APPARATUS, 
89 
2231.—Evaporating Kettles. 
2 5 gallons. 
$3.50 8.50 each. 
Exsiccators. See Dessicators. 
2232 
2234 
2240 
2233 
2232. Eye Baths, of glass. Each, .25 
2233. —Evolution Flask, funnel and deliv- 
ery tube (without delivery flask). $1.25 
2234. Eye Models, for showing the reflec- 
tion on the eye lenses, with the use of 
spectacles. Each, $15.00 
Faraday’s Retorts. See Retorts. 
2235. —Files, enamelers’, for cutting glass. 
Each, 1.00 
2236. —Ditto, round, half round and flat. 
4 5 6 7 in. 
.20 .25 .35 .40 each. 
2237. —Ditto, triangular. 
3 4 5 6 8 in. 
.18 .25 .30 .40 .50 each. 
2238. —File Handles. Each, .10 
2239. —Filtering Apparatus, porcelain. $8.00 
2240. —Ditto, ditto, Plantamour’s, tin bath for 
hot water. $2.50 
2241. —Ditto, ditto, of copper, with porous 
strainer $1.25 
2242. —Ditto, ditto, Beale’s quick 75 
2243. —Ditto, ditto, for rapid filtration, by 
Prof. Bunsen’s method, under atmospheric pressure. $11.00 
2243 90 
E. B. benjamin’s descriptive catalogue 
The foregoing apparatus has come into extensive use both in 
Europe and in this country: filters precipitates, etc., which, with 
the old method, would take, in many familiar instances, four to ten 
hours to filter properly, in a tenth of the time taken by the old 
method. Alluminous, Sillicious, and ordinary sulphide of hydrogen 
precipitations, are quickly filtered from. So convenient and useful 
has it become, and so generally recognized by the profession, that 
it is considered almost an indispensible requisite of every laboratory. 
The illustration shows the arrangement of this pump; full descrip- 
tion of the method of employment of this apparatus, and several of 
its excellencies maybe found in Johnson’s latest edition of Fres- 
enius’s Quantitative Chemical Analysis, from which I extract the 
following observations, and I have recently introduced an improve- 
ment in the working of this apparatus, by which the filtrate may 
be received directly into a beaker, for the suggestion of which I am 
indebted to Dr. Gibbs, of Harvard College. 
“ This apparatus is screwed down on a board fastened to the wall, in such 
a manner that each separate piece of the apparatus is held by a single fasten- 
ing only, in order to prevent the tubes from being strained or broken by the 
possible warping of the board. On opening the first pinchcock, the water 
flows down the discharge to a depth of thirty feet, carrying with it the air 
which it sucks through the upper tube. The second pinchcock is used to 
regulate the flow of the steam, when the first one is completely open. The 
discharge pipe should have a fall of about thirty feet, and be of a diameter of 
half-an-inch, and end in a sewer or some other arrangement, to convey the water 
away. The filtration is made in the following manner. The receiver standing 
in a metallic vessel is counected by a small glass or rubber tube, with the dis- 
charging tube on left of the illustration (having previously been fitted with 
filter). At first, the delivery is gradual, but in a moment or two the filtrate 
runs through in a continuous stream, often so rapidly that one must hasten 
to keep up the supply of liquid. 
“The Platinum Cone is placed in the bottom of the glass funnel, the dry 
paper filter then introduced in the ordinary manner, moistened, and freed 
from all adhering air bubbles by pressure with the huger. A filter so arranged, 
and in perfect contact with the glass when filled with a liquid, will support 
the pressure of an entire atmosphere without the least danger of breaking, 
and the interspace between the folds of the platinum foil is perfectly sufficient 
to allow of the passage of a continuous stream of water.” 
2244. —Filtering Apparatus, Bell Glasses, with tubulature at 
foot, for above. See Bell Glasses. 
For other appurtenances of Bunsen’s quick filtering appar- 
atus, see their appropriate heads in this Catalogue. 
2245. —Filter, calico, a very strong and durable filter, conical, 
with folds. $2.50 OF CHEMICAL AND PHYSICAL APPARATUS. 
91 
2246. —Filter Dryer, of porcelain. $1.00 
2247. —Filter Holders, japanned. Each, 3.00 
2248. —Filter Hooks, of glass, to hang between the funnel and 
filter. Per doz. .50 to .75 
2249. —Filtering Rings, of unannealed wire. “ .60 
2250. —Ditto, ditto, porcelain, to attach to an upright stand, single 
arm. Each, .50 
2251. —Ditto, ditto, ditto, with three arms, to place over a glass 
vessel when filtering into it. Each, .35 
2252. —Filtering Flasks, extra stout, to bear pressure. “ .50 
Filter Covers. See Covers. 
Filter Stands. See Funnel Supports. 
2253. —Filters, felt, conical shape, for filtering wines, etc. 
Nos. 8 12 16 
$1.00 2.00 3.00 
2254. —Ditto, French, cut in a circular form, packs of 100 each, 
grey, genuine Prat-Dumas. 
Nos. 25 33 40 45 50 
7| 10 13 15 17f in. 
.40 .55 .75 $1.00 1.25 per pack. 
Per 12 sheets, Nos. 80 100 
26 38 in. 
.75 $1.00 
2255. —Ditto, ditto, white, in packs of 100. 
2 3 4 5 6 7£ 15 16| in. 
.15 .20 .25 .35 .45 .55 $1.25 1.50 per pack. 
2256. —Filtering Paper, white, French, 15x18. Per ream, $4.50 
2257. —Ditto, ditto, Berzelius’s, similar to Swedish, but firmer. 
Per quire, .75 
2258. —Ditto, ditto, Chardin, exceedingly stout and heavy, for 
making filtering pulp. Per sheet, .20, per ream, $30.00 
2259. —Ditto, ditto, best German laid paper, extra heavy, 19x22. 
Per quire, 65, per ream, $9.00 
2248 
2251 
2253 92 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
PER QUIRE, PER REAM. 
2260. —Filtering Paper, letter A, laid, 19x22, .60, $7.00 
2261. —Ditto, ditto, “ B, wove, 18x21, .50, 6.50 
2262. —Ditto, ditto, “ C, laid, 15|.xl8i, .40, 4.50 
2263. —Ditto, ditto, “ D, wove, 16x19, .40, 4.55 
2264. —Ditto, ditto, “ E, wove, 15x19|, .35, 4.00 
2265. —Ditto, ditto, Swedish, genuine, having the water-mark J. 0. 
Munktell, as recommended by Prof. Fresenius. 
Per quire, $1.50 
2266. —Finger Tips, of rubber, to put on the fingers 
when handling acids, iodine, etc. Each, .10 
2267. —Fire Syringe, producing instantaneous light 
by sudden condensation of air, of brass, 7 in. cylin- 
der. $3.00 
2268. —Ditto, ditto, of glass, with brass cap and piston. 
$8.00 
2269. —Fire Clay. Per lb. .05 
2270. —Fittings, for evolution bottles. Each, .30 
2271. —Ditto, for wash bottles. “ .10 
2272. —Ditto, for Woolf’s bottles. “ .15 
Flameless Lamp. See Aphlogistic Lamp. 
2273. —Flasks, assay, or parting, long-necked, of hard Bohemian 
glass. Pei* doz., $1.50 
2274. —Ditto, assay, conical, flat bottom, with pro- 
jecting ring around them about two-thirds of 
the way from the base to the top, to prevent 
the' tongs rom slipping when they are being 
lifted, thoroughly annealed, of best Bohemian 
glass. Each, .50 
2275. —Ditto, ditto, best Bohemian glass, with lip, 
without ring. Each, .50 
2276. —Flasks, very best and genuine Bohemian, with vial mouth 
and flat boJ ,om. 
1 2 4 6 8 12 16 24 32 oz. 
$1.20 1.30 1.60 2.25 2.50 3.00 3.25 3.75 5.50 per doz. 
| 1 2 3 gall. 
•75 $1.25 1.75 2.00 each. 
2277. —Ditto, ditto, flat bottom, vial mouth, pear shape, for den- 
tists, etc.; 2 gallons. Each, $2.50 
2267 
2273 
2275 
2276 OF CHEMICAL AND PHYSICAL APPARATUS. 
93 
2278 
2279 
2280 
2281 
2290 
2278. Flasks, round bottom, vial mouth, pear shape. 
8 16 32 oz. % gall. 
$3.00 4.00 6.00 10.50 per doz. 
2279. —Ditto, ordinary flat bottom, with a ring around the neck to 
bear corking. 
1 to 2 oz. 4 8 16 32 gall 2 
.12 .15 .20 .25 .35 .75 $2.00 each. 
$1.20 1.50 2,00 2.50 3.50 7.50 20.00 per doz. 
2280. —Ditto, best Bohemian glass, flat bottom, pear shape, with 
ring around the neck. 
4 8 16 32 oz. 
$2.50 3.25 4.25 6.50 per doz. 
2281. —Ditto, round bottom, pear shape, with ring around the neck 
to bear corking. Prices the same as the foregoing. 
2282. —Ditto, Rose’s blow-pipe or “ Reagirkelchen,” of very small 
size, pear shape, with flaring mouth, for use with the blow-pipe. 
Per doz. .60 
2283. —Ditto, small, blown before the lamp, of best hard German 
glass, globular shape, light and thin glass, with flat bottoms 
suitable for specific gravity. 
1 i 1 oz. 
.60 .75 $1.00 per doz. 
2284. —Ditto, best German “ Florence,” vial mouth. 
2 4 8 16 24 32 oz. 
$1,25 1.60 2.25 2.75 3.25 3.75 per doz. 
2285. —Ditto, of best Bohemian, with a tubulature half-way up the 
neck. 
16 oz. qts. 
75 $1.00 each. 
2286. —Ditto, ditto, ditto, with tubulature on either side of the 
bulb. 
| 1 gall. 
$1.50 2.25 each. 
2287 —Ditto, Bologna. Per doz., $1.50 94 
E. B. benjamin’s descriptive catalogue 
2288. —Flasks, copper. 1 qt., $3.00; 2 qts., $4.50 each. 
2289. —Ditto, iron. Each, $1.00 
2290. —Ditto, gas, of best Bohemian glass, bottle shape, with ring 
around the neck. 
8 16 32 48 oz. 
.35 .40 .50 .60 each. 
Ditto, litre. See Litre Flasks, or Bottles. 
Ditto, oxygen. See Oxygen Retorts. 
Float, Erdmann’s. See Burette Swimmer. 
Florentine Receivers. See Receivers. 
Forks, for gas burners. See Gas Burners. 
1291 
2293 
2292 
2294 
2296 
2298 
2299 
2301a 
2300 
2302 
2291. —Forceps, brass, ordinary, plain. Each, .50 
2292. —Ditto, ditto, stont. “ .75 
2293. —Ditto, ditto, ends bent in parallel directions, with ivory 
tips. Each, .75 
2294. —Ditto, jewelers, polished steel, square taper jaws. “ .75 
2295. —Ditto, ditto, heavier. $1.00 
2296. —Ditto, ditto, unpolished, Stubb’s, extra strong, for holding 
and crushing the button and minerals, in assay. Each, $1.25 
2297. —Ditto, of polished steel, 7 inches long, and lined with cork. 
Each, $1.00 
2298. —Ditto, steel, ordinary, small. “ .25 
2299. —Ditto, ditto, form No. 1. “ .50 
2300. —Ditto, ditto, form No. 2. “ .50 
2301. —Ditto, ditto, form No. 3, German silver point. “ .75 
2301. steel, form No. 4, hardened rubber end. “ .75 
2302. Ditto, ditto, form No. 5, German silver point. “ 1.00 OF CHEMICAL AND PHYSICAL APPARATUS, 
95 
2309 
2311 
2303 
2306 
2316 
2314 
2313 
2303. —Forceps, steel, platinum point, ordinary German form. 
Each, 81.50 
2304. —Ditto, ditto, ditto, German silver. “ 1.75 
2305. —Ditto, German silver, French shape, platinum ends. “ 2.00 
2306. —Ditto, steel, with extra heavy platinum points. “ 2.50 
2307. —Ditto, heavy brass, platinum ends. “ 1.00 
2308. —Ditto, wire, platinum points. • *• .75 
2309. —Ditto, for breaking glass, heavy, of steel. “ .75 
2310. —Ditto, for bending wire, round ends, Stubb’s. “ 1.25 
2311. —Ditto, for cutting wire. “ .75 
2312. —Ditto, brass, with spring. “ .75 
Fossils. See Minerals and Fossils. 
2313. —Fountain in vacuo. 9.00 
2314. —Formation of Water, apparatus for, produced by the 
combustion of hydrogen under a bell jar. $2.50 
Fractional Distillation. See Distillation, Michro-Chem- 
ical Retorts, Flasks, etc. 
2315. —Frames, for the charts and photographs mentioned in 
this catalogue, according to the styles required. 
2316. —Freezing in vacuo, Leslie’s apparatus. $3.00 to 6.00 96 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2317 
2319 
2321 
2323 
2317. Funnels, American glass. 
2 oz. 4 8 16 32 1 gall. 1 gall. 
.10 .15 .18 .25 .35 “.50 .75 each. 
2318. —Funnels, best Bohemian glass, formed to an angle of 60° 
all the edges ground evenly. 
11 2 2f 3 31 4 41 5 6 in. 
.15 .18 .20 22 28 .30 36 .44 .60 each. 
2319. —Ditto, ditto, formed especially after a pattern, with bottom 
of a cone formed to a true angle of 60°, and having a stem 
with parallel sides, made expressly for Bunsen’s quick filtering 
apparatus. 
2 21 3 4 5 in. 
.20 .25 .30 .40 .50 each. 
2320. —Ditto, ditto, fluted or ribbed, best imported ground tops. 
2 3 4 5 in. 
20 .30 .40 .50 each. 
2321. —Ditto, German glass, small, in nests of 3, largest 1 inch 
across the top. Per nest, .25 
2322. —Ditto, ditto, angle 60°, tops unground. 
2 3 4 5 6 in. 
.12 .15 .20 .25 .30 each. 
$1.00 1.20 2.00 2.50 3.50 per doz. 
2323. —Ditto, glass, long, bent stem, for filling retorts. 
2 4 1 18 24 oz. 
.35 .40 .50 65 .80 each. 
2324. —Ditto, separatory, of best Bohemian glass, conical, formed 
to an angle of 60°, with stopcock ground into the neck. 
4 6 8 in. 
$2.50 3.25 4.50 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
97 
2324 
2325 
2326 
2329 
2331 
2334 
2335 
2325. —Funnels, separatory, globe shape, stoppered. 
1 qt. 2 qts. 
$3.50 4.50 each. 
2326. —Ditto, ditto, globe shape, stoppered, small, with 
funnel tube for separation and use in volumetric an- 
alysis. Each, $1.25' 
2327. —Ditto, ditto, ditto, hemispherical, of light blown glass. 
Each, $1.00' 
2328. —Ditto, ditto, conical, formed on an angle of 60°, stout Bohe- 
mian glass. Each, $1.5'0’ 
2329. —Ditto, tubes, glass, with stopcock between the cone and' 
the tube. Each, $1.00 
2330. —Ditto, ditto, glass, with plug stopper ground into the neck 
of the funnel. Each, $1.00 
2331. —Ditto, ditto, ordinary, conical, stout glass, length of stem, 
18 20 24 in. 
.15 .20 .25 each. 
2332. —Ditto, ditto, conical, of light blown glass. 
12 16 18 in. 
.25 .30 .35 each. 
2333. —Ditto, ditto, thistle top. 
12 18 in. 
.18 .25 each. 
2334. —Ditto, ditto, thistle top, bulb double the size of the 
above, tube 18 in. long. Each, .30 
2335. —Ditto, ditto, Welter’s safety thistle top, one bulb. 
Each, .30 
2336. —Ditto, ditto, ditto, 2 bulbs, 30 inches. Each, .40 
2335 
2336 98 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2337. —Funnels, tubes, Welter’s, 3 bulbs. Each, .50 
2338. —Ditto, ditto, ditto, conical top, 1 bulb. “ .40 
2339. —Ditto, ditto, ditto, “ 2 “ “ .50 
2340. —Ditto, ditto, ditto, “ 3 “ “ .60 
2341. —Ditto, ditto, ditto, short stem, thistle top, 2 and 3 bulbs. 
Each, .5<> 
2344 
2342 
2343 
2346 
2342. —Ditto, ditto, Mitscherlich’s form, of 2 limbs and safety bulb, 
and thistle top funnel in the center. Each, .50 
2343. —Ditto, ditto, glass, Filling. “ .50 
2344. —Ditto, porcelain, safety, with bulb at the base of the cone. 
Each, 75 
2345. —Ditto, ditto, conical, with loop handle at the side. 
3 4 44 54 6 in. 
.40 .55 .70 .90 $1.00 each. 
2346. —Ditto, ditto, filtering, with staves inside. 
3 3-J 44 54 6 in. 
.60 .70 $1.00 1.40 1.70 each. 
2347. —Ditto, ditto, percolating. Each, $3.50 
2348. —Ditto, ditto, perforated, without stem. 
3 3| 4 44 5| 6 in. 
.40 .50 .60 .70 $1.25 1.50 each. 
2349. —Ditto, ditto, ditto, with large holes to support cloth filters. 
34 44 5 54 64 74 in. 
.50 .55 .80 $1.00 1.50 1.75 each. 
2350. —Ditto, ditto, German, with handle. Each, .25 OF CHEMICAL ANT) PHYSICAL APPARATUS. 
99 
2351. —Funnels, gutta percha, conical. 
31 4i 4f 5| 7 71 in. 
.60 .75 $1.00 1.50 1.75 2.00 each. 
2352. —Ditto, ditto, spherical, 1 gallon. Each, $5.00 
Ditto, for hot filtration. See Filters. 
Funnel Supports. See Supports. 
FURNACES 
2353.—Furnace gas, Erdmann’s, of fire clay, with tripod stand, 
without burner. .75 
2353 
2355 
2357 
2354. —Ditto, porcelain, to surround Bunsen’s burner 1.00 
2355. —Ditto, sheet iron, having 7 concentric rings on the top, 
mounted on three legs. $4.50 
2356. —Ditto, with large Rose’s burner. 10.00 
The above apparatus is found very useful by apothecaries and 
in small laboratories for evaporations, hot mixtures, etc. 
Furnaces, for gas, small. See Stoves. 
Ditto, for kerosene. See Stoves. 
2357. —Ditto, French, hand, clay. Each, $2.50 to 10.00 
2358. —Ditto, Kent’s, portable, sheet iron, small size, 17 in. high, 
of strong plate iron, lined with fire clay; it has six doors, the 
dome being hinged, that it may be more easily placed off or on; 
the openings are conveniently arranged for the reception of 
porcelain tubes; has a sand bath, water bath, a set of concentric 
rings, to receive a vessel as small as 3| inches in diameter. 
Each, $25.00 
2359. —Ditto, Chamott. “ 3.00 
2360. —Ditto, cupelling, French, of refractory clay, bound with 
iron bands; it is composed of three parts, without the dome, 100 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
with scorifying, cupel and tube openings, and stop doors for the 
same, complete. 
Nos. 12 3 4 
$15.00 20.00 25.00 35.00 each. 
2361 
2358 
2359 
2360 
2362 
2361. —Ditto, Ilibb’s patent, of heavy cast-iron, lined with fire clay, 
with arrangements for the cupel muffle to extend through the 
center of the furnace, so the fire may extend all around it; 
has separate opening for tubes and retorts; it is supplied 
with water bath, sand bath, concentric rings, etc. A very 
highly esteemed and convenient furnace, as it may be used 
both for assay and heating purposes, and the muffle may be 
withdrawn at any time for examination. $50.00 
2362. —Ditto, Perrot’s gas blast of sheet iron, with a thick lining of 
fire clay, as per sectional illustration. The blast is received 
underneath, and gas supplied to nine large Bunsen’s burners, 
having the jets thrown to a common center; the supply of OF CHEMICAL AND PHYSICAL APPARATUS. 
101 
gas is regulated by a hand crank. When in operation, the con- 
centrated flame is forced up through an opening at the bottom 
of the furnace, and completely surrounds the crucible resting 
on a pestle of fire clay, enclosed in an inner wall of the same 
material, which soon becomes superheated to such an extent 
that five pounds of gold may be melted in the short space of 
eight minutes. This valuable furnace is also used by enamelers, 
jewelers, dentists, etc. 
Nos. 1 2 
$40.00 60.00 each. 
2360 
2364 
2365 
2363. —Ditto, No. 0, melting 500 grammes of copper at one time. 
$35.00 
2364. —Ditto, a new French crown, for gas, composed of a large 
number of jets on a circular support, and surrounded by an 
iron frame, which reflects the heat, and at the same time sup- 
ports the vessel to be heated. It is very highly esteemed by all 
the manufacturers that have used it. 
Nos. 1 2 . 3 
$8.00 10.00 12.50 each. 
2365. —Ditto, gas, Griffin’s, for chemical operations at a white 
heat; it is 2 feet high and 8 in. wide, consisting of a brass 102 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
cylinder open at the bottom, at the top of which are 1G Bunsen’s 
burners fixed, having a gas supply pipe regulated by stopcock. 
It rests on an iron stool, to which the chimney is attached by 
means of braces. The furnace itself is a cylinder of fire clay 
resting on a fire clay sole plate, which is pierced to receive the 
fire from the burner ; it measures 6 inches in height, 8 i itches 
outside diameter, and 5 inch bore. The crucible to be heated 
is supported on a perforated plumbago cylinder, and reaches 
within about an inch of the face of the gas burner. The dome, 
or roof of the furnace is carefully constructed so as to have a 
good draft; the consumption of gas when at work is 33 cubic 
feet an hour. $20.00 
2366 
2367 
2368 
2366. —Furnace and Lead Basin, for etching, with hydrofluoric 
acid on glass. $12.00 
2367. Ditto, enamelers, of French refractory clay, with large 
opening, for the use of enamelers, dentists, etc., in two parts, 
grates and stops for openings. 
N os. 1 2 
$20.00 25.00 each. 
2368. —Ditto, Chilton’s universal, of heavy sheet iron, lined with 
fire brick, having moveable grate and ash box; it is so arranged OF CHEMICAL AND PHYSICAL APPARATUS. 
103 
that the pipe above the furnace slides up and down so as to 
permit the top to be removed, and the deep iron sand bath 
accompanying the furnace, to be put in the place of it. A set 
of cast iron rings accompanies the furnace, and the doors are 
suitably stopped. It is a very convenient furnace for all the 
purposes of a laboratory, such as melting, distilling, evapor- 
ating, cupelling, etc. $40.00 
2369 
2372 
2369. —Ditto, or oven, Carius’s, for heating substances, in sealed 
glass tubes. $12.00 
2370. —Ditto, ditto, with Kemp's gas regulator, two thermometers 
and Bunsen’s burner. $22.00 
2371. —Ditto, Erlenmeyer, tor two tubes. 7.50 
2372. —Ditto, ditto, for four tubes. 9.00 
2373 .—Ditto, two thermometers, 1 gas burner, 1 gas regulator, 
extra. $10.00 
2374.—Glass Tubes for ditto, heavy, strong, hard glass. 1.00 
2375 
2375. —Furnace Combustion, Bunsen’s, improved, 25 burners, 
with stems, to turn on or off gas instantaneously. $60.00 
Ditto, ditto. See also Combustion Furnaces. 
2376. —Galactometer, consisting of a wooden standard, graduated 
with a tube attached to the same to receive the milk. $3.00 104 
E. b. benjamin’s descriptive catalogue 
2377. Gallipots, French porcelain. 
i 1 2 4 8 16 32 oz. 
$4.00 4.25 4.50 8.00 10.00 12.00 15.00 per gross. 
2378. —Ditto, German porcelain. 
| oz. oz. 
$2.00 3.00 per gross. 
2379. —Ditto, ditto, white porcelain, wooden covers. 
| 1 2 oz. 
$6.00 7.00 8.00 per gross. 
2380. —Ditto, ditto, fine translucent porcelain, with cover of the 
same material, % ounce. Per gross, $18.00 
2381. —Ditto, ditto, yellow clay, without covers. 
1 1 1| 2 3 oz. 
$5.50 6.50 8.00 10.00 14.00 per gross. 
4 6 8 12 16 oz. 
$16.50 30.00 40.00 50.00 60.00 “ 
Galvanic Apparatus, for electro plating. See the back 
part of this book. 
Ditto, Batteries. See Electricity, under E. 
Ditto, Decomposing Cells, Bunsen’s, Hoffman’s, etc. 
See the back part of this volume. 
Galvanometers. See Electricity and Galvanism. 
Gas and Water Analysis, Apparatus for. See the 
back part of this book. 
Gas Bags, for air and hydrogen. See Balloons. 
2382. —Ditto, of vulcanized rubber, oval. 
i 123568 10 galls. 
$1.50 1.80 2.50 3.50 5.00 6.00 8.00 10.00 
2383. —Ditto, ditto, with socket and stopcock additional. 
Extra, $1.50 
2384. —Ditto, ditto, with socket and mouth-piece. “ .75 
2385. —Ditto, square and oblong, for holding oxygen, hydrogen, etc., 
having cloth insertion, being well adapted to endure pressure, 
and warranted perfectly tight. 
Size, 18x24 20x30 24x30 30x40 in. 
15 25 35 55 galls. 
$6.50 8.75 11.00 13.50 each. 
2386. —Ditto, ditto, with socket and stopcock. Extra, $2.00 
2387. —Ditto, pressure boards for the above. Per pair, $10.00 
Gas Bottles. See Bottles. OF CHEMICAL AND PHYSICAL APPAPvATUS. 
105 
2387 
2392 
2394 
2394 
2388. Gas Bottles, fitted, with cork, funnel tube and. bent de- 
livery tube. 
8 16 32 oz. 
.70 .90 81.25 each. 
2389. —Ditto, ditto, fitted with perforated cork, funnel tube, con- 
necting tube and wash bottle with connecting tube and bent 
delivery tube. 
8 oz. 1 pt. 1 qt. 
81.10 1.40 1.85 each. 
2390. —Ditto, ditto, two necks, fitted with corks, funnel tube, and 
delivery tubes. 
i pt. 1 pt. 1 qt. 
81.00 1.50 1.75 each. 
2391. —Ditto, ditto, with two-necked wash bottle. 
i pt. 1 pt. 1 qt. 
81.80 2.30 2.80 each. 
2392. —Ditto, ditto, Berzelius, with glass tube running to the 
bottom of the bottle and fitted by an air tight joint, and also 
having a lateral tube on the shoulder. 82.00 
2393. —Ditto, ditto, Liebig’s, with funnel, having plug stopper fitted 
with an air-tight joint and with delivery tube. 
4 oz., 81.10 8 oz., 2.25 each. 
Gas Burners. See Burners. 
Gas Flasks, with tube on the side. See Flasks. 
2394. —Ditto, with delivery tube sealed in the neck, for the manu- 
facture of sulphuretted hydrogen. v Each, .25 
2395. —Ditto, consisting of an ordinary gas flask, fitted with safety 
funnel and delivery tube, for generating chlorine, etc. 
1 pt. 1 qt. ■£ gall. 
.90 81.10 “1.35 each. 106 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
Gas Furnaces. See Furnaces. 
2396.—Gas Generator, Kipp’s, for sulphuretted hydrogen, ordi- 
nary form, with safety tube in top. $6.00 
2396 
2397 
2397. —Ditto, ditto, Bohemian, with double concentric and inner 
stoppers. $7.50 
2398. —Ditto, ditto, small, with safety funnel in top. 3.50 
2399. —Ditto, ditto, for hydrogen, of copper, brazed, to hold 15 
gallons. Price, including bell and fittings, $35.00 
This is a first class apparatus, and will give an abundant 
supply for a large laboratory. 
2400. —Ditto, ditto, sulphuretted hydrogen, Babo’s, consisting of two 
bulbs, with open mouth, united by a semi-circular tube, for the 
prompt supply of gas in small quantities. Price, mounted, $2.50 
The bulb, on therignt of the illustration, is half filled with lumps of 
sulphide of iron ; the other bulb is partly filled with diluted sulphuric acid ; 
the apparatus being placed on the support, revolves on the center, and can 
be fixed by the thumb-screw in any required position; when the bulb con- 
taining the sulphide of iron is raised above the other bulb, the acid is thrown 
back into the right bulb, and its action on the sulphide of iron ceases; other- 
wise, when this bulb is placed below, the sulphuric acid flows upon the 
sulphide of iron, and a continuous current of sulphuretted hydrogen gas 
passes off by the bent, glass tube, into the washing flask, and thence 
outward. When the apparatus is not in use, it is simply necessary to elevate 
the bulb containing the sulphide of iron and close the piuchcock on the 
flexible tube. OF CHEMICAL AND PHYSICAL APPARATUS. 
107 
2401. —Price of the glass part of the above apparatus, without 
wash bottle. Per doz., 812.00 
2402. Gas Generators, hydrogen, of glass. Each, 5.00 
2403. —Ditto, ditto, of extra heavy, French crystal glass jar, con- 
taining bell shape gas holder, leaden tripod, stopcock, and 
gallow-screw connector. 
Height, 9 16 19 in. 
810.00 12.00 15.00 20.00 25.00 each. 
2404. —Ditto, for sulphuretted hydrogen, 
by the employment of asbestos. 81.00 
2405. —Ditto, ditto, for Oxygen, of copper, 
double bottom, and iron top, carefully 
secured. 1 qt., 84.50 y gall., 6.00 each. 
Gas Globes. See Deflagrating Globes. 
2406. —Gas Holders, Pepys’, made of ja- 
panned zinc, and having a glass tube on 
the side to indicate the quantity of gas 
in the gas holder. 
10 galls. 15 galls. 
820,00 25,00 each. 
2407. —Ditto, ditto, of copper. 
10 galls. 15 galls. 
827.50 37.50 each. 
2408. —Ditto, ditto, for oxygen and hydrogen, containing 15 gallons 
of very heavy japanned zinc, with bells, complete. 870.00 
2400 
2402 
2403 
2401 
2405 108 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2406 
2409 
2409. Gas Holders, for oxygen and hydrogen, 23 gallons, new 
arrangement for holding the bells always in perpendicular posi- 
tion, mounted on castors, and having weights enclosed in a 
frame. $100.00 
Gas Jars. See Bell Jars, Bell Glasses, etc. 
2410. —Gasometer, Bunsen’s mercurial, graduated to millimeters. 
$2.7 5 
2411. —Gas Meter, large, with exposed indices, covered with glass, 
stopcock, pressure indicator, regulator, and delivery jet. $50.00 
2412. —Gas Regulation Burner. $ 5.00 
2413. —Gas Regulator, Kemp’s, improved by Bunsen. 
$3.50 
2424.—Gas Pistols, japanned tin. .50 
2415. —Gas Pipettes, Ettling’s, of glass. 2.00 
Other Gas Apparatus. See Gas Analysis. 
2416. —Gas Tubes, plain, small, 6 inches in length. 
Per doz., $2.00 
2417. —Ditto, Bunsen’s. 
25 in 1 50 in I 100 in 1 200 in 1 
$1.25 1.75 2.00 2.50 each. 
24 5 OF CHEMICAL AND PHYSICAL APPARATUS. 
109 
2410 
2419 
2420 
2418. Gas Tubes, Bunsen’s, 5 cubic inches in 10. Each, $1.75 
2419. —Gas Washing Apparatus, consisting of two porcelain 
dishes, fitting the one into the other, with concentric shoulders. 
$5.00 
2420. —Gasogenes, French, cane covered, for two bottles. 
Each, $7.50 
2421. —Gauge Tubes, for steam boilers. Per lb. 1.00 
2422. —Gauze, of brass wire netting, 5, 10, 20, 40, 60, 80, and 
100 meshes. Per square foot, .60 to .90 
2423. —Ditto, of copper. “ .85 
2424. —Ditto, of iron. “ .30 to .40 
Geissler Tubes.. See Electric Tubes. 
2425. —Glass Blowers’ Table, with sheet iron top, drawers, 
double bellows, and brass discharge pipe. $40.00 
2426. —Ditto, ditto, of wood, with double bellows. 15.00 
2427. —Glass Plates, colored, for examination of colored flames, 
assorted. 3x3 3x4 4x4 in. 
.10 .15 .20 each. 
2428. —Ditto, of fine French mirror glass, 4 inch thick. 
3 4 6 8 9 10 12 in. 
.25 .35 .60 $1.00 1.25 1.50 2.25 each. 
2429. —Ditto, ditto, ground on both sides, 1 inch thick. 
6 7 8 12 in. 
$2.00 2.25 2.75 8.50 each. 
See also Covers, glass. 
2430. Glass Ends, for burettes, drawn. Each, .05 110 
E. b. benjamin’s descriptive catalogue 
2436 
2325 
2437 
2431 .—Glass Pieces, small broken pieces. Per lb., .25 
2432. —Glass Rods, assorted sizes and qualities. .60 to .75 
Glass Tubing. See Tubing. 
2433. Glass Shades, furnished to order. 
2434. —Ditto, feet, to ditto. Each, .40 to $4.00 
2435. Gloves, india rubber, of best manufacture, without seam, 
for handling acids and acidulous preparations. Per pair, $5.00 
See also Finger Tips. 
2436. —Goniometers, Hauys’, for measuring the angles of crys- 
tals, in morocco case. Each, $10.00 
2437. —Ditto, Wollaston’s, reflecting. “ 30.00 
2438. —Ditto, German, reflecting, with eye lenses to read the gradu- 
ations. A very fine and accurate instrument. Each, $50.00 
2439. —Graduate Glasses, for test purposes, not engraved, with 
glass foot. 
| 1 2 4 8 16 32 oz. 
.12 .15 .20 .25 .40 .50 .75, each. 
2440. —Graduates, registered minims, Ger- 
man, vase form. 
60 120 minims. 
.50 .75 each. 
2441. —Ditto, English form, glass foot. 
60 120 minims. 
.50 .75 each. 
2440 
2441 OF CHEMICAL AND PHYSICAL APPARATUS. 
111 
2442.—Graduates, registered, English shape. 
1 2 4 8 16 32 pz. 
.25 .30 .45 .60 81.00 1.50 each. 
2443 
2445 
2446 
2447 
2448 
2449 
2450 
2443. —Ditto, ditto, tumbler shape. 
| 1 2 4 6 8 16 32 oz. 
.35 .40 .50 .65 .70 .80 81.50 2.00 each. 
2444. —Ditto, ditto, French, carefully and accurately graduated. 
8 12 16 32 oz. 
81.00 1.25 1.75 2.25 each. 
2445. —Ditto, porcelain. 8 16 oz. 
81.00 1.50 each. 
Grain and Gramme Weights. See Weights. 
2446. —Hammers, blow-pipe, Plattner’s, usual form, square head, 
Nos. 2 and 3. Each, .75 
2447. —Ditto, ditto, Freiberg style, octagonal, Nos. 1 and 4. “ 81.00 
2448. Ditto, mineralogical, pointed at both heads, for trimming, 
No. 5. Each, 81.00 
2449. —Ditto, ditto, one end pointed and the other flattened, No. 6. 
Each, 81.25 
2450. —Ditto, for watchmakers, small and round head. “ 1.00 
2451. —Ditto, geological, one head flattened and the other pointed, 
for breaking ores. Each, 81.75 
2452. —Ditto, ditto, extra large and heavy, for field work. “ 2.00 
2453. —Ditto, ditto, and polished, for use with two hands (small 
sledge). Each, 82.50 
2454. —Handles, of wood, for files, hammers, etc. “ .06 to .50 
2555.—Hand-bladder Glasses. Each, .75 to 81.00 
Hardness of Minerals, tests for. See Minerals. 112 
E. B. benjamin’s DESCRIPTIVE CATALOG HE 
2458 
2456 
2452 
2455 
2457 
2459 
Hessian Crucibles. See Crucibles. 
Heat Apparatus. See collection at the latter part of 
this book. 
Hoffmann’s Ditto, collection of. See the list of the same 
at the back of this book. 
2456. —Holders, for caustic, ivory, with silver ends. Each, $4.00 
2457. —Ditto, for platinum spoons and wire. “ .60 
Ditto, for burettes, supports, test tubes, etc. See Supports, 
Test Tubes, etc. 
2458. —Holsterique Barometer, with thermometer, accurately 
adjusted, fine polished brass mounting, in velvet-lined morocco 
case. Each, $35.00 
Hot Water Funnel. See Funnels. 
2459. —Hydroclese, or metallic syringe, French, in velvet-lined, 
mahogany cases. For males, $4.00 
The chief merit of this clyso-pump is, that a piston is dispensed with, the 
liquid drawn acting in this capacity. Its construction is based on the 
simplest laws of Hydraulics, and is purely metallic. It can be employed 
advantageously for all kinds of injections, and, by increasing its volume, acts 
as a medicinal douche. 
2460. —Ditto, ditto, ditto. For females, $5.00 
Hydrogen Generator and Pistols. See Gas. 
Hydraulics and Hydrostatics. See collection at the 
close of this book. OF CHEMICAL AND PHYSICAL APPARATUS. 
113 
HYDROMETRY. 
2461. —Hydrometers, for Acids and aceteous fermentations, 
Balling’s. Each, $1.25 
2462. —Ditto, Otto’s, 0 to 12, in fourths. “ 1.25> 
2463. —Ditto, for Acids, Beaume’s, 0 to 70, in fourths, in pasteboard 
cases. Each, .75 
2464. —Ditto, ditto, ditto, for liquids heavier than water, Beaume’s 
scale, graduated about 70. 
in 1 | | 
.75 .80 .85 each. 
2465. —Ditto, for Alkali, or fluids lighter than water, Beaume’s 
scale. Each, .75 > 
2466. —Ditto, for ditto, in pasteboard cases, in 1. “ .75> 
2467. —Ditto, ditto, ditto, in tin cases, No. 204. “ .60 
2468. —Ditto, ditto, ditto. “ .50' 
2469. —Ditto, for Acid, in chamois-lined leather cases, with ther- 
mometer and glass jar complete. 
No. 995 996 997 
$4.00 4.50 5.00 each. 
Ditto, for alcohol. See Alcoholometers. 
2470. —Ditto, Manual containing tables for alcoholometers, Pyle’s. 
Each, .50 
2471. —Ditto, empty cases for Hydrometers. “ 50 
2472. —Ditto, for Bark, in pasteboard cases. M 1.00 
2473. —Ditto, Beer and Wort, Balling’s, in pasteboard cases. “ 1.00 
2474. —Ditto, ditto, with thermometer, in M “ 2.00 
2475. —Ditto, for Brine, pasteboard cases. “ 1.00 
2476. —Ditto, for Coal oil, 30 to 50. “ .75 
2477. Ditto, up to 80. « 1.00 
2478. —Ditto, Densimeter. “ 1.00 
2479. —Ditto, Ether, Beaume’s scale. “ .75 
2480. Ditto, ditto, pese, Erench, No. 2585. “ 1.00 
2481. —Ditto, for Fluids heavier than water, 0 to 70. Each, .75 
2482. —Ditto, ditto ditto, with thermometer and specific gravity 
scale, 1000 to 2000. Each, $2.00 
2483. —Ditto, for Fluids lighter than water, 10 to 40. 75 
2484. —Ditto, ditto, ditto, with thermometer and specific gravity 
scale, 700 to 1000. Each, $1.50 114 
E. B. benjamin’s descriptive catalogue 
2485. —Hydrometers, for petroleum, etc. Each, $2.00 
2486. —Ditto, for Milk, ordinary style. “ .50 
2487. —Ditto, ditto, 0 to 25. “ .75 
2488. —Ditto, Milk Essayers, Chevalier, jar and therm’r, “ 1.50 
2489. —Ditto, ditto, Quevenne, with jar and thermom’r, “ 1.00 
2490. —Ditto, for Most and Wine, French, in tin cases. “ 1.50 
2491. —Ditto, ditto, Oechsle’s. “ 1.50 
2492. —Ditto, for rich Oils, French, Lefebre, with thermometer in 
pasteboard cases. Each, $2.00 
2493. —Ditto, ditto, ditto, 22 to 50. “ 2.00 
2494. —Ditto, for Salt. “ .75 
2495. —Ditto, Saccharometers, French, for testing syrup, in 
pasteboard cases. Each, .75 
2496. —Ditto, ditto, Beaume’s, for Syrups and Sugar. “ .75 
2497. —Ditto, ditto, Balling’s, for “ “ “ $1.00 
2498. —Ditto, ditto, with thermometer enclosed. “ 2.00 
2499. —Ditto, ditto, thermometer and Specific gravity scale extra. 
Each, $2.50 
2500. —Ditto, ditto, for testing Sugar and Syrups, according to Dr. 
Scheibler. In chamois-lined morocco case, with three spindles, 
and cylinder. Each, $15.00 
2501. —Ditto, ditto, for Shellac, one spindle, in pastebo’rd cases. 1.00 
2502. —Ditto, ditto, Universal, for Specific Gravity, one spindle 
registering 700 to 2000, for fluids heavier or lighter than water, 
in pasteboard box. Each, $2.00 
2503. —Ditto, ditto, two spindles, 700 to 1000 and 1000 to 2000, in 
pasteboard boxes. Per set, $3.00 
2504. —Ditto, ditto, single spindles, in pasteboard boxes. 
700 to 850 1000 to 1200 1400 to 1600 
700 to 1000 1000 to 1400 1400 to 2000 
750 to 1000 1000 to 2000 1800 to 2000 
850 to 1000 1200 to 1400 Each, $1.50 
2505. —Ditto, ditto, sets, Specific gravity, from 700 to 2000, finely 
and accurately divided, in light glass jars, swelled top, with 
wooden feet. Per set, $3.50 
2506. —Jars alone, for the above. Each, .50 
2507. —Ditto, for Specific Gravity, single spindle, 1000 to 2000, 
with thermometer and fine glass jar, in chamois-lined leather 
cases. Each, $5.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
115 
2511 
2524 
2525 
2508. —Hydrometers, for Specific Gravity, two spindles. 
Each, $6.50 
2509. —Ditto, ditto, ditto, in fine chamois-lined mahogany cases. 
with thermometer and glass cylinder. Each, $9.75 
2510. —Ditto, ditto, three spindles. “ 11.50 
2511. —Ditto, ditto, six “ “ 14.00 
2512. —Ditto, ditto, seven “ “ 16.00 
2513. —Ditto, Twaddle’s, in sets of six spindles. 
No. 1, 0 deg. to 24 deg., specific gravity, 1000 to 1120 
No. 2, 24 “ to 48 “ “ “ * 1120 to 1240 
No. 3, 48 “ to 75 “ « “ 1240 to 1370 
No. 4, 74 “ to 102 “ “ “ 1370 to 1510 
No. 5, 102 « to 138 “ “ “ 1510 to 1690 
No. 6, 138 “ to 180 “ “ “ 1690 to 2000 
The entire set of six, with spherical bulb. Each, $6.00 
2514. —Ditto, sets of six, with cylindrical bulb. “ 5.00 
2515. —Ditto, single spindles. “ 1.25 
2516. —Ditto, sets of five spindles, in black walnut box. “ 5.50 
2517. —Ditto, for Urine, French. Each, .50 
2518. —Ditto, ditto, with one spindle, of fine graduation, indicating 
from 1000 to 1040, with solution tube. Each, $2.00 
2519. —Ditto, Solution tubes, extra. “ .25 
2520. —Ditto, for Vinegar. “ .75 
2521. Ditto, Jars, with brass foot. Each, $1.50 
Ditto, Jars, with glass foot. See Jars. 
2522. —Hydrometers, Nicolson’s, of japanned tin, for ascertain- 
ing the specific gravity of minerals, etc. Each, $2.00 
2523. —Ditto, ditto, with a set of decimal weights. “ 4.00 
2524. —Ditto, ditto, brass, finely adjusted with a set of weights, all 
in case, without jar, complete. Each, $6.00 116 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
Hydrogen Lamps. See Doebereiner’s Lamp. 
2525. —Hygrometers, Daniels’ on polished stand and gilt marks. 
Each, 89.00 
2526. —Ditto, Mason’s, on boxwood stand. “ 4.50 
2527. —Ditto, Saussure’s, hair, mahogany stand. “ 4.00 
2528. —Ditto, ditto, on brass stand. 88.00 to 12.00 
2529. —Ditto, August Psychrometer, two thermometers, wet and 
dry bulb, and fine divisions. Each, 812.00 
2530. —Ice Freezer, Carre’s apparatus, imported, only to order. 
8150.00 
It consists of a generator and receiver, made of iron boiler-plate, the 
receiver being conical in shape, both connected by means of a strong iron 
tube. In the generator is placed a strong solution of ammonia saturated at 
0°, and this is heated over a large gas flame, the receiver meanwhile being 
immersed in the water. The liquified ammonia passes again into the gaseous 
state, and is re-absorbed by the water in the generator. But in this evapora- 
tion, great cold is produced, and the vessel of water is soon frozen. The am- 
monia going over can be used indefinitely. 
2531. —Ditto, Hoffman’s apparatus, in glass, showing the principle 
of Carre’s ice freezer. 815.00 
2532. —Ivory Scale, Harcourt’s, for measuring the button in 
assay, very accurate, made speciallv to order for me. 85.00 
2533. —Ignition Tubes. Per doz. 82.50 
2534. —Indicator of Fire Damp, Electric. 7.50 
The large cup is filled with porous plaster of Paris, and is connected with 
the bulb-tube opposite to it (which contains a small quantity of mercury), by 
means of a brass tube. The top of the bulb has a screw cap to hold one of the 
electrodes. The other electrode is screwed to the base, and connects with 
large cup; when the porous cup absorbs the fire-damp gas, the mercury 
presses on the narrow tube, making connection with upper cup, comple- 
ting the circuit, and ringing the bell. 
2530 
2534 
2539 OF CHEMICAL AND PHYSICAL APPARATUS. 
117 
Infusion Jars. See Jars. 
Ingot Moulds. See Moulds. 
2535. —Iron Ladle, used in assay, 3 in. .40 
2536. —Jars, Battery, glass, cylindrical shape and flat bottom. 
4x4 4x5 4|x5£ 4x6 4|x6 5|x8 in. 
.40 .45 .50 .55 .60 .75 each. 
7x8 6x9 8x12 9xl2| 9x15 in. 
.80 .85 $2.00 . 2.50 3.00 each. 
2537. —Ditto, ditto, fluted, for bichromate potash solution. 
Pints, .25 quarts, .50 each. 
2538. —Ditto, cold cream, French, smooth, rounding and highly 
glazed inside. £ 1 2 oz. 
.75 .85 $1.00 dozen. 
Ditto, chloride of calcium. See Chloride of Calcium. 
2540 
2542 
2543 
2544 
2550 
2539. —Ditto, conserve, with cut-glass covers, and two rings, made 
of the finest French Baccharat cut crystal. It is the finest 
quality of glassware in the world, bought by me directly 
from the factory, and suitable for showing specimens, etc., in 
show-windows, counters, etc. 
Height under the cover, 14 16 18| in. 
$7.50 10.00 15.00 each. 
2540. —Ditto, ordinary, French, pure white crystal; sides perfectly 
parallel; single and double rings. 
Measure under cover, 27 c. c. 32 to 33 c. c. 
$2.00 3.50 each. 
Ditto, Decanting. See Decanting 
2541. —Ditto, hydrometer, French, swelled top, polished box-wood 
feet. Each, .50 
2542. —Ditto, ditto, heavy swelled top, with glass feet. 
Height, 16 18 24 in. 
.75 $1.00 1.24 each. 118 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2543. —Ditto, ditto, with glass foot and ring around the neck, 
ground top to receive glass plate. 
5xl| 6xlf 8xl£ 10x2 10|xlf ll|xl| in. 
.30 “ .35 .40 .45 .50 .55 each. 
12|xlf 13x2 15x2 18x2| 20x2| 25x3 in. 
.60 .65 .70 .75 .80 $2.00 each. 
2544. —Ditto, ditto, lipped. 
5xf 6xl| 10x2 ll|x2£ in. 
.30 .35 .37 .40 .45 .50 each. 
13x2 15x£ 15x2 20|xl 25x3 in. 
.52 .50 .55 .75 $2.00 each. 
Intermediate sizes of the above jars will be in proportion. 
2545. —Ditto, Infusion. 
Pints, $1.50 quarts, 2.00 each. 
2546. —Ditto, Leech. 
Quarts, .50 galls., $2.50 each. 
2547. —Ditto, Leyden. 
i pt. 1 qt. | gall. 1 gall. 2 galls. 
$1.25 1.50 2.50 3.25 4.00 each. 
2548. —Ditto, Mercury, glass. Each, $1.00 to 1.50 
2549. —Ditto, ditto, or Powder, cylindrical, of porcelain, about 4 
inches high and 24 inches diameter, with small opening at the 
top. Each, $1.75 
2550. —Ditto, specie, ground tops, if desired. 
| pt. 1 pt. Iqt. | gall. 1 gall. 2 gall. 
.15 .18 .25 .35 .50 $1.00 each. 
2551. —Ditto, ditto, fluted sides. 
Pints, .30 quarts, .50 
2552. —Ditto, ointment, glass, flat shape, swelled tops. 
1 oz., $1.50 2 oz., 2.00 per doz. 
2553. —Ditto, ditto, porcelain, glazed, flat covers. 
8 oz. 16 oz. 1 qt. 
.60 .75 $1.25 each. 
2554. —Ditto, ditto, fine French choice porcelain, with fire-gilt 
bands. 1 oz., $3.50 4 oz., 4.00 per doz. 
2555. —Ditto, ditto, white porcelain, conical cover, knobbed. 
8 16 32 oz. 
.75 $1.00 1.25 each. 
2556. —Ditto, ditto, French, labelled, 17 c. c. high. Each, $1.30 
2554 OF CHEMICAL AND PHYSICAL APPARATUS. 
119 
2557 
2561 
2563 
2564 
2565, ’66 
2557. —Jars, ditto, round, with conical top, knobbed, tall shape, 
of the very best translucent and highly glazed china porcelain, 
with fire-gilt decorations, and labelled. 
4|x2f 4|x3| 7|x4| 8|x4| 6x3| 6|x4|in. 
$1.50 1.75 2.25 2.50 2.75 2.85 
6fx4| 7x4| 7-jx4| 8x4| 9x5f in. 
$3.00 3.00 3.15 3.25 3.50 each. 
The above measurements are made under the cover, and are approximate, 
the actual measure being in millimeters, do not precisely correspond with 
English measures. These jars are well known to be about the only kind 
through which ointments will not penetrate. 
2558. —Ditto, ditto, ditto, octagonal shape, 4|x8. Each, $2.50 
2559. —Ditto, ditto, octagonal and oblong, 4|x6x7f. “ 1.50 
2560. —Ditto, Preparation, employed for the collection of anatomical 
preparations, of fine white and clear glass, having the stoppers 
thoroughly ground in with fine emery, and provided with glass 
hook from which to suspend the objects to be preserved. 
8 oz. pts. qts. i gall. 1 2 
.70 .75 $1.25 1.75 3.00 6.00 each. 
2561. —Ditto, ditto, of Bohemian glass, having the mouth parallel 
with the sides. 
2x4 2|x5 3|x6 4x7 6x13 10x8 in. 
.50 .75 $1.15 1.75 6.00 15.00 each; 
2562. —Ditto, ditto, with stopper ground into the base of the jar, 
the top being oval; used for laying down preparations or ex- 
hibiting specimens. 
4 8 16 32 oz. 
.30 .50 .75 $1.00 each- 
2563. —Jets, brass, for hydrogen. Each, .40 
2564. —Ditto, ditto, with stopcock and cap. “ $2.00 
2565. —Ditto, for washing bottles, ordinary glass, bent.. “ .06 120 
E. b. benjamin’s descriptive catalogue 
2566. —Jets, for Faraday’s washing bottles, drawn. Each, .10 
2567. —Ditto, for Berzelius’s washing bottles. 11 .25 
2568. —Ditto, for Bunsen’s burners, flattened ends. “ .25 
2568 
2569 
2570 
2573 
2581 
2569. —Ditto, Blast, to place in a Bunsen burner, having an extra 
tube to connect with blow-table and produce blast. Each, $1.00 
2570. Jewelers’ Globes. “ 1.50 
2571. —Julep Tubes, straight or bent Per doz., 2.50 
2572. —Kettles, porcelain, small. Each, 3.50 
2573. —Ditto, ditto, large. « 8.50 
2574. Knife, for cutting cork, wooden handle. .40 
2575. —Ditto, for blow-pipe use, with file on back. .75 
2576. —Ditto, for cutting around glass tubing. .50 
-2577.—Ditto, sharpeners, of porcelain. 
5 m. .40 6| in. .50 each. 
Kipp’s Apparatus for sulphuretted hydrogen. See Gas. 
2578. — Labels, Chemical, with the old and new nomen- 
clature, and old and new symbols on the same paper. Per set, .20 
2579. —Ditto, Mawson’s, in book form, with gum backs, double 
nomenclature. Per book, .50 
2580. —Ditto, blank. Per doz. sheets, .36 
Lactometers, milk. See Milk Assayers. 
2581. —Lactoscope, Vogel’s, or optical milk test, in wooden case. 
$12.00 
The above illustration consists of a vessel in a semi-circular brass frame 
and parallel glass sides, one-fifth of an inch apart. When this vessel is filled 
with a mixture of new milk and water, the appearance of the mixture is ex- 
amined by placing a candle at a distance of three feet from one side of it, and 
the eye close to the other side ; the presence of a certain proportion of cream 
renders the figure of the candle flame indistinct. The smaller the quantity 
of milk required to obviate the candle light the better is the quality of 
the milk. With the above comes a glass graduated vol cylinder on foot, with 
spout, and a graduated vol pipette. The manner of operating with this, show- 
ing the precise quantity of butter indicated in the milk, will be furnished 
with the instrument. OF CHEMICAL AND PHYSICAL APPARATUS. 
121 
2591 
2589 
2582 
2583 
2586 
2590 
2593 
2582. Ladles, iron, for pouring metals. 
3-inch bowl, .40 5-inch, .50 each. 
2583. —Ditto, tinned, long handles. 
5 5| 6 in. 
.60 .70 .80 each. 
2584. —Ditto, porcelain, long handles. Each, .50 
2585. —Lamps, for perfuming rooms, without flame. “ $1.25 
Ditto. See Davy’s Safety. 
2586. —Ditto, alcohol blast, Russian. 1.50 
2587. —Ditto, brass blast, consisting of a large brass reservoir on 
stand, with jet bearing on a lamp underneath. Each, $7.50 
2588. —Ditto, alcohol, of brass, mounted on three legs, with sheet 
iron jacket, containing a triangle to hold a crucible immediately 
over the flame jet; the jacket increases the heat. Each, $12.00 
2589. —Ditto, ditto, Lang’s, on tripod, with porcelain handle and 
support for crucibles, or nerforated sheet iron shelf, on top. 
Each, $3.00 E. b. benjamin’s descriptive catalogue 
122 
599 
2603 
2605 
2607 
2590. —Lamps, Berzelius, of brass, on tripod, with triangle per- 
forated shelf, and porcelain handles. Each, $4.50 
2591. —Ditto, ditto, of the very best manufacture, of heavy brass, 
and highly-polished mahogany and cocoa handles. Each, $7.50 
2592. —Ditto, ditto, of brass, with reservoir about 10 inches distant 
from the burner, with a stopcock half way on connecting tube 
to regulate the flow of the spirits. Each. $6.50 
2593. —Ditto, ditto, or Rose’s form, on brass stand, with mahogany 
foot, with rings, triangles, etc. Each $6.00 
2594. —Ditto, ditto, ditto, with porcelain foot. “ 7.00 
2595. —Ditto, ditto, Midler’s modification, mahogany base, having 
rotary motion around the stand. Each, $7.00 
2596. —Ditto, ditto, or Spirit lamps, of brass. 
Small, $1.00 large, 1.50 
2597. —Ditto, ditto, of glass, German, 4 oz., without caps. Each, .20 
2598. —Ditto, ditto, with round caps. 
4 oz., .50 6 oz., 60 each. 
2599. —Ditto, ditto, with large cap and square base. 
3 5 8 oz. 
.50 .75 $1.00 each. 
2600. —Ditto, ditto, vase form, 3 oz. Each, .50 
2601. —Ditto, brass, for blow-pipe, with screw cap, for putting over 
Each, $1.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
123 
2602. —Lamps, brass, long stem, for heating tubes and soldering. 
Each, $1.25 
2603. —Ditto, engravers, the top is to be filled with water to con- 
centrate the light. Each, $4.00 
Ditto, hydrogen. See Doebereiner’s Lamps. 
2604. —Ditto, Plattner’s blow-pipe, brass, extra heavy, mounted on 
stand. Each, $3.00 
Lamps, gas. See Burners. 
Lamp Stands. See Supports. 
2605. —Lamps, Labratory, large wooden foot, with clamp, reflec- 
tors, etc. Each, $20.00 
2606. —Ditto, Students. Each, $2.50 to 4.00 
Ditto, electric. See Electric Lamps. 
2607. —Ditto, Magnesium, with fan wheel and clock-work, for 
burning magnesium ribbon or wire. Each, $25.00 
2608 
2610 
2608. —Ditto, oxhydric, of brass, mounted, on stand. 
Each, $7.50 
2609. —Ditto, ditto, ditto, larger. “ 16.00 
2610. —Ditto, ditto, larger, with extra arrangement for lime holder, 
moveable joints, etc. Each, $20.00 
2611. —Ditto, ditto, ditto, very accurately adjusted, silver plated. 
Each, $22.50 
2612. —Ditto, ditto, on stand, French, Duboscq’s pattern. “ 25.00 
2613. —Ditto, ditto, on iron stand. “ 20.00 
Ditto, cylinders. See Burner Furnaces. 
2612 124 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2620 
2622 
2623 
2613 
2621 
2628 
2614. —Lamp Wicks, for Berzelius’s, Rose’s, Muller’s, etc. 
Per doz., .25 
2615. —Ditto, for Plattner’s blow-pipe lamp. Per yard, .25 
2616. Lead Trays, for etching, on glass, with hydrofluoric acid. 
Each, .40 
Lead Retorts, for making hydrofluoric acid. See Retorts. 
2617. —Leaf, Dutch. Per book, .25 
2618. —Ditto, Gold. “ $1.00 
2619. —Ditto, Silver. “ .75 
2620. —Leech Tubes. Per doz., 1.00 
2621. —Lenses, magnifying, for assayers’ use, or reading fine 
print, etc. Each, $2.50 
2622. —Ditto, Coddington, brass. 
Small, $2.25 large, 2.50 each. 
2623. —Ditto, Stanhope, German silver, forexamination of minerals. 
Small, $2.00 large, 2.50 each. 
2624. —Ditto, ditto, silver. Small, $2.50 large, 3.50 each. 
2625. —Ditto, ditto, silver, with cap, to keep the dust from them, 
small. Each, $3.50 
2626. —Ditto, horn cases, single- 
9 lines, .75 11 lines, $1.00 each. 
2627. —Ditto, ditto, double glasses. 
9 lines, $1.25 12 lines, 1.50 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
125 
2632 
2633 
2635 
2636 
2628. —Lenses, horn cases, triple glasses. 
9 lines, 81.50 11 lines, 1.75 each. 
2629. —Ditto, Photographic, Steinheil, of Munich, a very correct 
and clear glass. 830.00 
2630. —Ditto, watchmakers. 2.50 
2631. —Ditto, a set of convex and concave, in a box. 2.50 
Liebig’s Potash Bulbs. See Potash Bulbs. 
2632. —Light, Refraction of, apparatus for. 5.00 
2633. —Light Recomposition, revolving disc, with prismatic 
colors, arranged consecutively. $2.50 
2634. —Litmus Papers, blue, red or neutral, for test papers. 
Per sheet, .05 
See also Tumeric Paper. 
2635. —Litre Bottles, stoppered and accurately guaged. 
50 cc. 100 150 250 300 | litre 1 2 
.35 .45 , .50 .75 .85 81.00 1.10 1.50 each. 
2636. Litre Flasks. 
30 cc. 50 100 200 | litre i 1 
.25 .30 .40 .60 .65 .85 81.00 each. 
2637. —Ditto, ditto, two marks on the neck. 
50 to 55 100 to 110 200 to 220 cc. 
.60 .75 81.25 each. 
2638. —Limb, Safety, Liebig’s. .Each, .50 
2639. —Magic Lanterns, French, square tin. 
Small medium large 
86.00 10.00 15.00 each. 
2640 .—Ditto, ditto, black, oval shape, provided with a ratchet 
screw and pinion for drawing in and out the lenses. Ea. 825.00 
Magic Circles. See Electricity. 126 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
6241 
2640 
2647 
2650 
2641. —Magneto-Electric Apparatus, new invention, for firing 
the fuses, etc., in mine blasting. $100.00 
In this apparatus the armature A A is always in contact with the poles 
of the magnet N, O, 8. It is supported by a piece of metal, B M, which 
turns around a horizontal axis, a; this piece presents a kind of handle, B a, 
having a knob at B, upon which one strikes with the finger in order to 
produce the withdrawing of the armature; thus, at the moment of this 
withdrawal, a first induction current is produced, passing contemporaneously 
with the movement which causes it, through the wire surrounding the 
extremities of the magnet. As long as one keeps the armature withdrawn 
from the magnet, the apparatus is inert; but as soon as one ceases to bear 
down on the button B, the armature, impelled by a spring which acts on the 
lever a B, drawn besides by the magnet, it turns instantly to the contact of 
the poles NS', a second current is produced in a contrary direction to the first, 
of equal intensity, as can be easily demonstrated with the galvanometer. 
There is also connected with the instrument a stop X, the employment of 
which holds the armature in a fixed position, so that it is impossible for elec- 
tricity to pass. This instrument works in all weathers; and, while it is im- 
possible to fire the fuse when the stop X is placed upon the armature, a 
simple withdrawal of the stop X, and a smart rap of the finger upon the 
handle B, will instantly fire a fuse by the electric current through a wire 500 
to 600 yards in length. 
2642. —Magneto-Electric Machine, in black walnut box, with 
battery, complete. $10.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
127 
2643. —Magneto-Electric Machine, fine polished mahogany box, 
with Universal lock. $35.00 
2644. —Magnesium, ribbon and wire. Per foot, .06 
2645. —Ditto, ditto, ditto. Per ounce, $3.25 
2646. —Magnets, steel, straight. Each, 1.00 
2647. —Ditto, Horseshoe, best English quality. 
2f 3 3| 4 5 6 10 in. 
.25 .30 .60 .75 .90 $1.25 2.50 each. 
2648. —Ditto, Horseshoe, compound. Each, $4.00 
2649. —Ditto, pair of bar, in box. “ 3.50 
2650. -Magnetic Needle, on stand. 1.75 
2651. —Ditto Dipping Needle, with brass stand, simple form. 2.00 
2652. —Ditto, ditto, more elaborate. 8.00 
2653. —Ditto, Toys, in boxes. .50 to 1.50 
Marchand’s Drying Tube. See Chloride of Calcium 
Tube. 
2654. —Mariotte’s Law, apparatus for. $10.00 
Marsh’s Arsenic Test. See Arsenic. 
2655. —Mattrasses, Bohemian, round bottom, long neck. 
4 8 16 24 32 oz 
.20 .30 .35 .40 .45 each. 
See also Bolt Heads. 
2656. —Measures, gutta percha, tall. 
1 quart, $3.00 | gallon, 3.50 each. 
2657. —Ditto, conical, quart. Each, $3.00 
2658. —Ditto, Harcourt’s, for assayers, ivory, very accurate. “ 5.00 
2659. —Ditto, lead, for blow-pipe apparatus. “ .50 
2660. —Ditto, porcelain, with handle and lip. 
2 4 8 16 oz. 
.35 .55 .75 $1.00 each. 
Mechanical Powers. See Apparatus, Mechanics. 
2661. —Mercury Box, earthen, oblong, glazed, 2x5. .75 
2662. —Ditto, Bottles, or Flasks of iron. Each, $1.50 
2663. —Ditto, Jar, or Powder Cup, porcelain, 5 lbs. 1.50 
2664. —Ditto, ditto, glass. 
16 18 24 in. 
$1.00 1.50 2.00 each. 
2665. —Mercurial Receiver, Cooper’s, plain, small. .50 
2666. —Ditto, ditto, larger. $1.00 
2667. —Ditto, ditto, stoppered at the top. 1.50 
2659 128 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
2668. —Mercurial Receiver, graduated, plain. $1.25 to 1.50 
2669. —Mercury Shower, through porous wood. 3.00 
2670. —Ditto, Trough, porcelain, to hold 5 lbs. 1.00 
2671. —Ditto, ditto, to hold 16 lbs. 2.00 
2672. —Metre Measures, graduated to millimeters on one side, 
English inches on the other side, graduated by government 
standard, folding together in short lengths for the pocket, of 
box-wood. Each, .50 
2673. —Ditto, ditto, ditto, of ivory. “ $2.25 
2674. —Ditto, ditto, fine ivory ruler, or paper cutter, for the desk, 
with a knob in the center. Each, $7.50 
2675. —Ditto, ditto, ivory, small, graduated 10 to 12 centimeters. 
2676. —Microscopes, No. 1, Universal joint, on flat standard, 
small. Each, $7.50 
2677. —Ditto, ditto, No. 3. “ 10.00 
2678. —Ditto, ditto, No. 4. “ 15.00 
2679. —Ditto, No. 1, supported on two columns, with thumb screw, 
allowing the tube to rest in an upright or vertical position, 
having two objectives and a jointed light reflector. Ea. $25.00 
2680. —Ditto, ditto, by Natchet, compound. “ 20.00 
2681 
2681.—Ditto, large, Gundlach’s, English stand, thumb screw deli- 
cately adjusted, in fine polished mahogany case, lock and key, 
with strap for carrying, two eye pieces, five objectives, including 
one of his fine immersion lenses of very high power, slides, 
chamois skin, etc. $225.00 
The high reputation of this celebrated manufacturer is too well known to 
need any further description of the foregoing instrument; it is precisely the 
same make and character in every particular as the one I exhibited at the 
meeting of the American Association for the Advancement of Science, held at 
Troy, which was so favorably spoken of in the notice of their proceedings. 
2668 OF CHEMICAL AND PHYSICAL APPARATUS. 
129 
2671 
2688 
2690 
2692 
2680' 
2693 
2682. —Microscope, solar, complete, with all the appurtenances, 
in fine polished box, comprising colored glasses, mounted, 
several objectives, manufactured expressly for me by the manu- 
facturer for the University of Vienna. $200.00 
Ditto, pocket. See Loups or Lenses. 
Ditto, aplanatic, Steinheil. See Photographic Lenses. 
2683. —Microscopic Covers, circles. Per doz., .35 
2684. —Ditto, ditto, ditto. Per ounce, 14.00 
2685. —Ditto, ditto, square. Per doz., .30 
2686. —Ditto, ditto, ditto. Per ounce, 3.0Q 
2687. —Ditto, Slides. Per doz., .70 
Minerals. See full list and description at the latter part 
of this book. 
2688. —Mineralogists’ Slates, of unglazed porcelain, for show- 
ing the streak. .40 4x5|, .50 each. 
Mineralogical Hammers. See Hammers. 
Minim Glasses. See Graduates. 
2689. Miser’s Plate. $2.50 
2690. —Mixing Capsules, of brass, for blow-piping and assay, 
according to size. .50 to $1.00 
Larger sizes made to order. 
2691. —Ditto, ditto, horn. Each, .25 
2692. —Ditto, Bottles, ground stoppered, carefully ground and 
graduated. 500 c. c., $2.50 1000 c. c., $3.50 
2693. —Ditto, Jars, carefully ground and stoppered. 
500 c. c., $2.50 1000 c. c., $4.50 130 
E. b. benjamin’s descriptive catalogue 
2694. —Models, of Crown Diamonds, imported to order, com- 
prising four of the largest crown diamonds. Each, $20.00 
Ditto, of Precious Stones, Crystals, etc. See Collections. 
Models of Mining Machinery, Tools, Furnaces, etc., 
as employed in the School of Mines at Freiburg, Saxony; duty 
free; imported only to order, viz : 
2695. —Model, of Arch Protector. $6.00 
2696. —Ditto, amalgamating apparatus. 40.00 to 45.00 
2697. —Ditto, of apparatus, for the Ascent and Descent of men in 
a mine. 18.00 to 25.00 
2698. —Ditto, of deep Shaft Bucket-lift, with bucket. 7.50 
2699. —Ditto, of shallow Shaft and Bucket-lift, with bucket. 7.50 
2700. —Ditto, of iron Bucket-lift, with bucket. 18.00 
2701. —Ditto, of Buddle, for stamp ore. 9.00 
2702. —Ditto, Horse Capstan. 60.00 
2703. —Ditto, Miners’ Cage. 3.00 
2704. —Ditto, Mulderhutte Cinder hoister. 37.50 
2705. —Ditto, Hydraulic Composing-machine. 30.00 
2706. —Ditto, usual form Composing-machine. 12.00 
2707. —Ditto, of Constructing Tools, various. 150.00 to 210.00 
2708. —Ditto, Patterson’s Concentration Apparatus. 60.00 
2709. —Ditto, “ Crab,” for hauling and heaving vessels into dock. 
$12.00 
2710. —Ditto, of ore. 
2711. —Ditto, of ore Crushing Machine, with lifter. 350.00 
2712. —Ditto, ditto, without lifter. 225.00 
2713. —Ditto, of round Buddle, for dressing stamped ore. 
45.00 to 52.50 
2714. —Ditto, of Buddle stationary frame. 45.00 to 52.50 
2715. —Ditto, of cylindrical blast Bellows, in wood. 87.50 
2716. —Ditto, ditto, ditto, in metal. 225.00 to 315.00 
2717. —Ditto, of Driving Ton, for flat shaft. 2.50 
2718. —Ditto, of Delivery shaft. 2.50 
2719. —Ditto, of separating Drum for well hole. 15.00 
2720. —Ditto, of Drill, with drilling apparatus. 75.00 to 90.00 
2721. —Ditto, of steam Engine, with horizontal cylinder and 
paddle-wheel movement, in wood. $45.00 to 60.00 
2722. —Ditto, ditto, ditto, in metal. 225.00 to 300.00 
2723. —Ditto, steam Engine, with working beam, in wood. 
$120.00 to 150.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
131 
2724. —Model, steam Engine, in metal. $270.00 to 375.00 
2725. —Ditto, of steam Engine, with air-condensing cylinder, in 
wood. $135.00 to 165.00 
2726. —Ditto, ditto, ditto, in metal. 250-00 to 350.00 
2727. —Ditto, oscillating steam Engine, in 
wood. $150.00 to 200.00 
2728. —Ditto, ditto, ditto, in metal. 
$300.00 to 450.00 
2729. —Ditto, water-pressure Engine, com- 
plete. $150.00 to 450.00 
2730. —Ditto, Extraction apparatus. 
$30.00 
2731. —Ditto, of refining Forge, German. 
$15.00 
273?.—Ditto, Hartz linen-covered Frame, for dressing slime. 
$18.00 
2733. —Ditto, annealing Furnace, or oven. 25.00 
2734. —Ditto, assay Furnace. 12.00 
2735. —Ditto, blast Furnace, for iron. 37.50 
2736. —Ditto, cupola Furnace, with ventilator. 37.50 
2737. —Ditto, ditto, ditto, without ventilator. 24.00 
2738. —Ditto, Freiburg Furnace, with double draft 21.00 
2739. —Ditto, ditto, lead Furnace. 18.00 
2740. —Ditto, Hartz lead Furnace. 27.00 
2741. —Ditto, puddling Furnace. 24.00 
2742. —Ditto, iron refining reverberatory Furnace. 60.00 
2743. —Ditto, reverberatory smelting Furnace. 22.50 
2744. —Ditto, English reverberatory smelting Furnace. 60.00 
2745. —Ditto, Mansfield roasting Furnace, with double draft. 22.50 
2746. —Ditto, of reverberatory Furnace, for the concentration of 
copper ore. $55.00 
2747. —Ditto, of Hungarian reverberatory roasting Furnace. 33.00 
2748. —Ditto, English roasting Furnace, with four work openings. 
$35.00 
2749. —Ditto, muffle roasting Furnace. 33.00 
2750. —Ditto, Furnace, for silver refining. 27.00 
2751. —Ditto, Mansfield “Spectacle” Furnace. 12.00 
2752. —Ditto, Saxony Furnace, for tin ore. 10.00 
2753. —Ditto, Furnace, for zinc ore. 45.00 
2726 132 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2754. —Model, curved Furnace, or oven. 12.00 
2755. —Ditto, of G old washing machine. 30.00 
2756. —Ditto, of lift Hammer, in wood. 24.00 
2757. —Ditto, ditto, ditto, in metal. 45.00 
2758. —Ditto, steam Hammer, in wood. 37.50 
2759. —Ditto, ditto, ditto, in metal. 67.50 
2760. —Ditto, forge Hammer, of wood. 24.00 
2761. —Ditto, ditto, ditto, of metal. 40.00 
2762. —Ditto, tilt Hammer. 24.00 
2763. —Ditto, of Hearth of a foot wall. 9.00 
2764. —Ditto, Freiburg refining Hearth. 50.00 
2765. —Ditto, English refining Hearth. 30.00 
2766. —Ditto, of inclined Plane, with drawing weights. 36.00 
2767. —Ditto, of Cross Lever, in wood. 7.00 
2768. —Ditto, ditto, ditto, in iron. $12.00 to 18.00 
2769. —Ditto, of Machine, for ore washing. 15.00 
2770. —Ditto, ore Mill, with water wheel. 125.00 
2771. —Ditto, ore Mill, without “ 100.00 
2772. —Ditto, stamp Mill, for two wet and one dry charge, with 
wheel. 75.00 
2773. —Ditto, ditto, ditto, ditto, without wheel. 45.00 
2774. —Ditto, of rolling Mill, for bar iron, in wood. 57.00 
2775. —Ditto, ditto, ditto, in metal. 275.00 
2776. —Ditto, warm air Oven. .15.00 
2777. —Ditto, hand Pump. 7.50 
2778. —Ditto, Rail “Dog,” with truck, English. 15.00 
2779. —Ditto, ditto, ditto, without truck, Hungarian 7.50 
2780. —Ditto, plain Reel. 6.00 
2781. —Ditto, of sinking Shaft, of iron. 37.50 
2782. —Ditto, ditto, ditto, of wood. 22.50 
2783. —Ditto, ditto, ditto, with round wall. 30.00 
2784. —Ditto, upright Shaft and under-ground workings. 225.00 
2785. —Ditto, Shaft timbering, for hoisting windlass. 12.00 
2786. —Ditto, Screening, or Sifting Machine. 40.00 
2787. —Ditto, Sweep Table. 18.00 
2788. —Ditto, of “Dolly Tub.” 2.50 
2789 .—Ditto, Trunks, for the precipitation of the slimes in stamp- 
ing mill. $40.00 to 45.00 
2790. —Ditto, Ventilator, as used in the Hartz mines. 22.50 OF CHEMICAL AND PHYSICAL APPARATUS. 
133 
2791. —Model, Ventilator, according to Fabry’s method. 75.00 
2792. —Ditto, ditto, ditto, Karsten’s method. 37.50 
2793. —Ditto, under-ground working of mines, with ridging and 
stoping ; also chambering and mason-work up to the deposit 
bed. $45.00 to 60.00 
2794. —Ditto, Wheel-barrow. 3.00 
2795. —Ditto, of tread Wheel. 15.00 
2796. —Ditto, hand Windlass. 22.00 
2797. —Ditto, turning Wheel 40.00 
2798. —Ditto, Water-wheel, Forneron’s method. $60.00 to 75.00 
2799. —Ditto, ditto, Chouvel’s. 60.00 to 75.00 
2800. —Ditto, ditto, Schwamkrug’s, with vertical motion. 75.00 
2801. —Ditto, ditto, overshot. 30.00 
2802. —Ditto, ditto, undershot. 22.50 
2803. —Ditto, ditto, breast. 30.00 
2804. —Ditto, ditto, for back water. 30.00 
2805. —-Ditto, ditto, for drawing engine according to Schwamkrug’s 
method. $270.00 
2806. —Ditto, Water-wheel tools, as used by Schwamkrug. 235.00 
2807. —Ditto, of the two above-mentioned, in one collection. 425.00 
2808. —Ditto, Water-whim, with crate of iron. $150.00 to 225.00 
2809. —Various models of shaft, pit, and underground timbering 
and mason-work, for mines. $5.00 to 10.00 
Other models can be made by the same manufacturers, in 
metal or in wood, accompanied with full drawings and descrip- 
tions. 
2810. —Monochromatic Light Apparatus, for showing Sodium 
Flames, complete, with lamp, after Dr. Morton. $12.00 
2811. Mulders’ Absorption 
Meter, for determination of 
carbonic acid from all bases, 
according to Fresenius. $5.00 
Mohr’s Apparatus, va- 
rious, distributed under dif- 
ferent headings throughout 
the Catalogue. 
2812. —Mordaunt Cloth, for dyers’ test. Per yd., $2.00 
2813. —Mouth Pieces, of horn, for blow-pipes, trumpet shape, 
also cylindrical and trumpet combined. Each, .25 
2810 134 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2811 
2814. —Mouth Pieces, cylindrical, of ivory. Each, .50 
2815. —Ditto, ditto, of turned wood, for inhaling gases, or to attach 
to gas bladders. Each, .25 
2816. —Ditto, ditto, of bone, for inhaling bags. Each, -25 to $1.00 
2818 
2820 
2821 
2817 
2822 
2823 
2827 
2817. —Ditto, ditto, box-wood, for nursing bottles. .25 
2818. —Mortars, agate, with pestles. 
11 li If If If 2 2f in. 
$1.90 2.00 2.15 2.20 2.25 3.00 3.25 each. 
2f 2f 2f 2f 2f 2f 3 in. 
$3.75 4.00 4.50 5.00 5.50 6.00 7.00 “ 
31 3f 4 41 5 51 5f in. 
$8.50 9.00 15.00 17.00 20.00 z5.00 30.00 “ 
2819. —Ditto, ditto, mounted in wood. Extra. Each, $1.00 
Ditto, diamond. See Diamond Mortars. OF CHEMICAL AND PHYSICAL APPARATUS. 
135 
2820. —Mortars, glass, with lip and pestle, shape conical. 
Nos. 1176 1175 1174 1173 1172 
Size, 34 34 41 44 44 in. 
Price, .75 $1.00 1.25 1.50 1.75 each. 
2821. —Ditto, hemispherical, glass, with pestle. 
2 3 5 6 in. 
.30 .35 .65 $1.00 each. 
2822. —Ditto, iron, bell shape. 
4 oz. 8 16 32 4 gall- 1 2 
.40 .70 $1.00 1.25 2.00 3.50 4.75 each. 
Ditto, iron. Other styles, special prices. 
2823. —Ditto, porcelain, emulsion, with pestle and strainer. 
Each, $2.00 
2824. —Ditto, ditto, with knobbed handles on either side, containing 
4 gallon. Each, $5.00 
2825. —Ditto, ditto, ditto, ditto, 1 gallon. “ 8.00 
2826. —Ditto, ditto, ditto, ditto, 1 “ emulsion, sharp lipped, and 
ring around the top, cover and porcelain handles. Each, $6.50 
2829 
2830 
2832 
2834 
2835 
2836 
2827. —Ditto, ditto, deep mixing, glazed outside. 
Nos. 012345678 
Diam., 3 34 4| 54 6 7 8 94 in. 
Price, .45 .60 .75 $1.00 1.25 1.50 2.00 3.00 4.50 each. 
2828. —Ditto, ditto, ditto, glazed throughout. 
Nos. 0 14 6 
.55 .70 $1.25 2.50 each. 
2829. —Ditto, ditto, shallow, for powders, glazed on the outside, 
with or without hp. 
Nos. 00 0 1 2 3 4 5 6: 
Size, 24 24 3 34 44 5 54 64 in. 
Price, .35 .40 .50 .60 .70 .75 .80 $1.00. each. 
Nos. 7 8 9 10 11 14 16 
Size, 7 7f 8f 9 94 124 141 
Price, $1.25 1.40 1.65 1.85 2.00 5.50 18.00 each- 136 
E. b. benjamin’s descriptive catalogue 
2830. —Mortars, wedgewood. 
Nos. 0000 000 00 0 1 2 3 4 
Price, .40 .50 .55 .65 .70 .90 $1.10 1.40 each. 
Nos. 5 6 7 8 9 10 11 12 
Price, $1.70 2.00 2.50 3.50 4.00 4.50 5.25 6.00 “ 
2831. —Ditto, steel polished inside and out. 
3 inches, $2.00 6 inches, 5.00 each. 
2832. —Moulds, of boxwood, for rolling the paper for cartridge 
cases in blow-piping. Each, .20 
2833. —Ditto, ditto, with pestle, for forming clay basins m blow- 
piping. Each, .75 
2834. —Ditto, brass, for making charcoal crucibles in quantitative 
blow-pipe analysis, in four pieces. Each, $4.25 
2835. —Ditto, ditto, for making cupels. Each, $2.50 to 4.50 
2836. —Ditto, ditto, for making scorifiers. “ 5.00 to 7.00 
2837. —Ditto, charcoal of wood, for forming oblong charcoal pieces. 
Each, $1.25 
2838 
2842 
2845 
2847 
2848 
2838. —Ditto, iron, for making gold and silver ingots. 
Each, $1.50 to 2.50 
2839. —Ditto, steel, for cupelling before the blow-pipe, two sizes 
and two pestles, with support. Each, $2.75 
2840. —Ditto, suppository. “ 7.50 
2841. —Muffles, sand, large. “ 1.50 
2842. —Ditto, ditto, ditto, for Hibb’s furnaces, fire clay. “ 1.25 
2843. Ditto, ditto, for Kent’s furnaces, round ends. “ .35 
2844. —Ditto, French, thin and strong, No. 5, 2fx3|. “ .30 
2845. —Ditto, ditto, ditto, No. 6, 2£x3f. 11 .35 
2846. —Ditto, ditto, ditto, No. 7, “ .45 OF CHEMICAL AND PHYSICAL APPARATUS. 
137 
2847. —Muffles, French clay, best. 
ABC D E F G H I 
3 3| 44 3| 4| 44 44 44 3| 
3f 4| 5 4f 6 6| 7| 4| 
44 6 64 74 74 8 8| 10 11 
Price, .50 .60 .70 .75 $1.00 1.10 1.20 1.50 2.00 each. 
2848. —Mullers, Glass. 3 in., $1.25 4 in., 2.25. 
Slabs for above. See Plates. 
Ditto, Agate. See Agate Slabs, with Muller. 
2857 
2849 
2853 
2855 
2856 
2849. —Nicholson’s Hydrometers, for ascertaining Specific 
Gravity of solids, minerals, etc., made of brass. Each, $4.00 
2850. —Ditto, ditto, ditto, including jar. “ 6.00 
2851. —Ditto, ditto, ditto, of tin. “ 2.00 
2852. —Nitrogen Bulb, Will <Sr Varrentrapp’s, 3 bulbs. “ .65 
2853. —Ditto, ditto, ditto, 4 “ '• .75 
2854. —Ditto, Limbs, Liebig’s, for connection. “ .75 
2855. —Nitrons Oxide Gas, apparatus for forming. « 3.50 
2856. —Ditto, ditto, ditto, smaller. " 2.50 
Nipper Taps. See Pinch Cocks. 
2857. —Nipple Shells, French, with ring. Per doz., 4.50 
2858. —Nursing Bottles, 
ditto. Per doz., $1.25 
2859. —Ditto, ditto, corks. 
Per doz., $.50 
2860. —Ditto, ditto, tops, 
box-vood. Per doz., $1.00 
2858 138 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2861 
2862 
2865 
2878 
2861. —Oil Receivers, Florentine. 
Pints, .75 quarts, 81.00 each. 
Organic Analysis. See Apparatus for. 
Optical Apparatus. See Optics. 
Oxygen Retorts. See Gas Generators. 
Oxhydrogen Blow-pipe. See Blow-pipe. 
2862. —Ozonometer, Sieman’s. 
2863. —Ditto, to attach to the new Borchard. electrical machine, 
for collecting ozon 86.00 
2864. —Page’s Rotating Apparatus. 16.00 
2865. —Ditto, Revolving Electro-Magnet. 8.00 
2866. Paper, bibulous. Per bundle of 1000 sheets, 4.50 
Ditto, filtering. See Filtering Paper. 
2867. —Ditto, glazed. Per sheet, .05; per quire, .75 
2868. —Ditto, litmus. Per sheet, .05 
2869. —Ditto, neutral. “ .05 
2870. —Ditto, parchment. “ .25 
2871. —Ditto, tea, No. 1. Per quire, .10 OF CHEMICAL AND PHYSICAL APPARATUS. 
139 
2872. —Paper, tumeric. Per sheet, .05 
2873. —Ditto, weights .50 
2874. —Pallettes, small. Each, .25 
2875. —Ditto, large. “ .30 
2876. Pans, expectorating. 11 .25 
2877. —Ditto, for gold washing. “ .50 
Ditto, horn. See Horn Pans. 
2878. —Parabolic Reflectors. 
13 in., $16.00 15 in., 25.00 10 in., 13.00 
2879. —Ditto, ditto, nickleized or silvered, additional. $2.50 
2882 
2880 
2881 
2881 
2884 
2880. —Perculators, Mohr’s glass and tin. Each, $8.00 
2881. —Ditto, of glass. Pints, .50 gall., $1.00 each. 
See also Displacement Apparatus. 
2882. —Perfume Bottles, French, fancy shaped, ground, stop- 
pered with ball top. Per 100, $7.50 
2883. —Ditto, ditto, amber and blue diamond, pressed, 1 oz. Ea. .40 
2884. —Ditto, ditto, ditto, pressed, ball stopper. “ .50 
2885. —Ditto, ditto, green, cut crystal glass. “ 3.00 
2886. —Ditto, ditto, square, crystal, cut top. Per doz., 6.00 
2887. —Pestles, porcelain. Each, .50 
2888. —Photometers, Bunsen’s, graduated, 5 foot bar, with scale, 
diaphragm and candle holders. Each, $30.00 
2889. —Ditto, regulation burner. “ 5.00 
2890. —Ditto, candles. Per lb., .75 
Ditto, Meter. See Gas Meter. 140 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2888 
2891. —Photographic Baths, porcelain, small. Each, $4.00 
2892. —Ditto, ditto, ditto, large. “ 5.00 
2893. —Ditto, Dishes, porcelain, shallow, with lip, Royal Berlin, 
9 inches. Each. $2.75 
2894. —Pill Boxes, for rounding and silvering pills. “ .75 
2895. —Ditto, tiles. 
5 6 7 in. 
.40 .50 .75 each. 
2896. —Pincers, gas, with corrugated jaws, for handling gas and 
other pipes, with screw driver on handles. $1.00 to 1.50 
2897 
2898 
2899 
2900 
2 JOI 
2897. —Pinch Cocks, Mohr’s, brass. 
Small, .25 large, .35 each. 
2898. —Ditto, ditto, with bent lip and screw, to regulate the flow 
of liquids. 
Nos. 12 3 4 
.30 .40 .50 .GO each. 
2899 .—Ditto, ditto, with rubber attachment and glass tips. 
Small, .35 large, .05 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
141 
2900. —Pinch Cocks, Mohr’s, with steel spring and heavy plate 
brass, with steel bow, having number and register screw in 
fractions to regulate the drops, in careful estimation. Ea. Si.75 
2901. —Ditto, ditto, brass wire, with protecting plate. “ .25 
2902. —Ditto, ditto, Bunsen’s. Per doz., 7.50 
2903. —Ditto, ditto, Dr. Squibb’s modification, arranged to employ 
but one screw. Each, .50 
2904. Pipes, for hydrogen bubbles. “ .75 
2905. —Ditto, organ; special prices. 
290G 2907 
2909 
2910 
2911 
2912 
2913 
2906. —Pipettes, straight, 6 in. long, drawn to the end. 
Each, .10; per doz., $1.00 
2907. —Ditto, cylindrical, or ball. Each, .25 
2908. —Ditto, with rubber ball, plain. “ .50 
2909. —Ditto, fixed, or volume. 
1 2 5 10 20 25 30 50 75 100 150 200 cc. 
.15 .20 .25 .30 .35 .40 .45 .50 .05 .85 .90 $1.00 each. 
2910. —Ditto, Ettling’s. Each, .75 
2911. Ditto, filling. “$1.00 
2912. —Ditto, dropping, graduated, 100 in 10. .75 
2913. —Ditto, Mohr’s, graduated. 
5 5 10 10 10 15 20 cc. 
ih /o o 1LO v'o A 
.70 . .75 .75 .90 $1.00 1.10 1.15 each. 
25 25 30 50 50 100 100 cc. 
I iLo I i A 1 I 
$1.15 1.20 1.20 1.35 1.40 2.00 2.50 each. 
2914. —Ditto, ditto, graduated from 0° to 5°, 0° to 10°. 
1 inioa $1.00 in ih, -75 in th .85 each. 
1 in A .75 142 
e. b. benjamin’s descriptive catalogue 
2915. —Pith Balls, per dozen. .25 
2916. —Ditto, Birds, “ $1.25 
2917. —Ditto, Images, per pair. .75 
2918. —Plates, brass sliding rod, hook and check screw. Ea. 5.50 
2919. —Ditto, earthen, glazed, 6 inch. “ .25 
2920 
2925 
2926 
2924 
2928 
2933 
2934 
2920. —Ditto, ditto, perforated, with rim around the top, flat. 
3 4 41 5 in. 
.25 .30 .35 .40 each. 
Ditto, glass. See Covers and Glass Plates. 
2921. —Ditto, porcelain, deep, rectangular. Each, 1.25 
2922. —Ditto, ditto, for arsenic and color tests, assorted sizes. 
Each, .50 to $1.00 
2923. —Ditto, porcelain, perforated. Small, .90; large, $1.00 
2924. —Ditto, porous, square. 
4| 4f 5| 5| in. 
.40 .45 .50 .55 each. 
2925. —Platinum Dishes. 
1 1 1 2 3 4 oz. Per grain, .3 
2926. —Ditto, Boats, for combustion. 
2f 2> 31 in. « .3 
2927. —Ditto, Spatulas. 
3/s 31 31 3H 41 in. “ .3 
2928. —Ditto, Spoons, with or without covers ; 2 sizes, “ .3 
2929. —Ditto, Scrap. “ .11 
2930. —Ditto, Sponges, German. Each, .30 
2931. —Ditto, ditto, French. “ 75 
Ditto, spongy. See Chemicals. 
2932. —Ditto, Jets or Tips. Each, .75 to $1.00 
2933. —Ditto, End Tongs, steel, double bend. Each, 6.00 
2934. —Ditto, ditto, German silver, double or single bend. “ 6.50 OF CHEMICAL AND PHYSICAL APPARATUS. 
143 
Platinum Retorts, special prices. 
2935. —Ditto, Sheet and Foil, ordinary size and thickness. 
Per grain, ,2| 
2936. —Ditto, wire, ditto, ditto, fine as hair. Per foot, .25 
2937. —Ditto, Foil, very thin for batteries. Per grain, 3f 
2938. —Ditto, Wire, for blow-pipe. Per foot .30 to .60 
Ditto, ditto, and Foil Gauze. 
2939, 2940 
2941 
2945 
2939. —Ditto, Covers. 11, If, 11, If, If, If, 2 in. Per grain, .3 
2940. —Ditto, Crucibles. |,i, f, 1? 2, 3 oz., and larger sizes, spe- 
cial to order. Per grain, .3 
2941. —Pliers, steel wire, round ends, square ends, and cutting 
ends. Each, $1.00 to 1.25 
Pneumatic Apparatus. See the end of the book. 
2942. —Ditto, Cistern. $12.00 
2943. —Ditto, Pumps, Sprengel’s mercurial, of glass, in fine polished 
walnut frame, French make. This article being excessively frail 
and delicate, is only imported on special order, with deposit, and 
at the risk of the purchaser. Each, $150.00 
2944 .—Ditto, ditto, or lever Air pump, heavy, hard wood frame, 40 
inches high, barrel 12x3f inches, and plate 12 inches in dia- 
meter, with manometer attached. Each, $200.00 
2945.—Ditto, ditto, ditto, Carre’s, with separate arrangements, for 
exhausting air and freezing water on same apparatus. 
Each, $150.00 144 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2946 
2946. —Pneumatic Pump, on flat base; barrel 8x2| inches; 
plate 10 inches diameter, with manometer. Each $100.00 
2947. —Ditto, ditto, with cylinder, inches, and plate 8 inches 
diameter, barrel placed vertically. Each, $50.00 
2948. —Ditto, ditto, barrel 7xl| inches, plate 7| inches diameter. 
Each. $25.00 
2935 
2949. —Ditto, ditto, barrel, 7x1 inches; plate, 6 inches diameter. 
Each, $18.00 
2950. —Ditto, ditto, without any stopcock. “ 15.00 
2951. —Ditto, ditto, not mounted, for organic analysis. “ 10.00 
2952. —Ditto, ditto, “ “ 15.00 
2951 
2952 
2956 OF CHEMICAL AND PHYSICAL APPARATUS. 
145 
2953. —Pneumatic Trough, of tin, japanned, 9xl2|, with shelf 
$2.75 
2954. —Ditto, ditto, ditto, 
11x15 in., with shelf. 
$3.50 
2955. —Ditto, ditto, ditto, 
13x16 xl2 in., with 
shelf. $5.00 
2956. —Ditto, ditto, of best 
annealed glass, with- 
out a joint, without 
shelf, 10x5 in. $4.50! 
2957. —Ditto, ditto, ditto,. 
ditto, 12x6 in. $7.00 
2958. —Ditto, ditto, ditto, 
ditto, 14x7 in. $8.50 
Polariscope. See 
Turmaline Pincers. 
2959. —Polarization Apparatus, Mitscherlich’s, careiully con- 
structed, on a metallic stand, double tubes. $60.00 
2959 
2S61 
2960. —Ditto, ditto, Wild’s, for the examination of sugars, syrups, 
and beet sugar, in a fine polished mahogany case, with tubes, 
lamps, etc., complete. , 1175.00 
2961. —Ditto, ditto, Soleil’s, of finely polished brass, with three 146 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2962 
tubes, complete, in a fine polished mahogany box, lock, key, 
etc., with instructions. $150.00 
2962.—Ditto, ditto, according to Soleil-Ventzke, with microscope 
for the micrometer scale, 1 tube 100 millimeters, and 1 tube 200 
millimeters; complete, with the apparatus and instructions 
which usually come with this instrument; also having Dr. 
Scheibler’s attestation as to its accuracy, it having been thor- 
oughly tested by him. $225.00 
2964 
2965 
2966 
2968 
2963. —Ditto, ditto, Norremberg’s, for the analyzing of light. Im- 
ported only to order. $60.00 
Pressure Boards. See Gas Bags. 
2964. —Pomades, glass. 1 oz., $1.25 2 oz., 1.50. 
Ditto, porcelain. See Jars. OF CHEMICAL AND PHYSICAL APPARATUS, 
147 
Porous Cups. See Cells. 
Ditto, Plates. See Plates. 
2965. —Potash Bulbs, Mitscherlich’s. Each, .60 
2966. —Ditto, ditto, Liebig’s latest form. “ .75 
2967. —Ditto, ditto, Mohr’s. “ .90 
2968. —Ditto, ditto, Geissler’s. “ $1.00 
2970 
2971 
2976 
2969 
.2973 
2969. —Ditto, Pipettes. Each, .30 
2970. —Precipitating Glasses. 
4 8 16 32 oz. | 1 gall. 
.25 .30 .40 .60 .80 $1.10 each. 
2971. —Preparation Glasses, flat bottom, thin glass. 
6xl| 7xlf 7xl| 8xl| in. 
$1.25 1.40 1.50 2.00 per doz. 
2972. —Ditto, ditto, round bottom. See Specimen Tubes. 
Ditto, Jars. See Jars for Analytical purposes. 
2973. —Prisms, hollow bottle, 60 deg. angle. Each, 7.50 
2974. —Ditto, ditto, extra fine, ground, of one piece of glass, and 
carefully stoppered, by Steinheil. Each, $50.00 
2975. —Ditto, ditto, mounted in brass, on stand. “ 15.00 
2976. —Ditto, ditto, series of 3, mounted. “ 30.00 
2977. —Ditto, flint glass, 3 in. “ .75 
2978. —Ditto, ditto, 4 in. . “ 1.10 
2979. —Ditto, ditto, 5 in. 11 2.00 
2980. —Ditto, ditto, 6 in. “ 3.00 
2981. —Ditto, for dark chamber, 15 lines. “ 2.00 
2982. Ditto, “ “ 21 « “ 2.50 148 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2983. —Prisms, acromatic, 30x27 m. m. Per pair, 5.00 
2984. —Ditto, ditto, 35x32 “ “ 6.00 
2985. —Ditto, ditto, 40x38 “ “ 7.25 
2986. —Ditto, ditto, 45x43 “ “ 9.00 
2987. —Ditto, equilateral flint, 33x30 m. m. Each, 4.00 
2988. —Ditto, ditto, 35x33 “ “ 5.00 
2989. —Ditto, Nicol’s assortment. Each, $6.00 to 10.00 
2990 
2992 
2993 
2994 
2990. —Proof Glasses. $Each, 1.25 
2991. —Punch Sticks, with porcelain ends, for 
crushing crystals in deep vessels, etc. Each, .25 
2992. Pulse Glasses. (See also Water Ham- 
mer.) ‘ Each, .50 
2993. —Pumps, glass model, for lifting. “ $1.50 
2994. —Ditto, ditto, for forcing and lifting. “ 1.50 
2995. —Ditto, Hydraulic, for blowing, by baromet- 
ric pressure. Each, $30.00 
2996. —Ditto, glass apparatus, for showing the principle of the 
forcing pump as applied to the fire engine. Each, $5.00 
2997 .—Ditto, Bunsen’s quick filtering apparatus, consisting of 
pump, platinum cone, mould and holder, set of funnels, bottles 
and support. Complete, $18.00 
2998.—Pungents, white, or large open mouthed, ground, stop- 
pered bottles. 1 oz., $4.50 2 oz., 5.00 per doz. 
2995 OF CHEMICAL AND PHYSICAL APPARATUS. 
149 
3003 
2999 
2999. —Pungents, amber, large open mouthed. 
1 oz., $4.50 2 oz., 5.00 per doz. 
3000. —Ditto, cut glass, with ground stopper and hinged silver 
caps, assorted colors. No. 1, $20.00; No. 3, 35.00 per doz. 
3001. —Ditto, cut glass, union or double ends; one end hinged 
and the other screw, silver top, assorted colors. 
No. 1, $35.00 No. 3, 45.00 each. 
3002. —Ditto, ditto, ditto, gold plated on silver. 
No. 1, $45.00 No. 2, 65.00 each. 
3003. —Ditto, cut glass, with ground stopper, and hinged caps, 
gold plated on silver. 
No. 1, $25.00 No. 3, 40.00 per doz. 
3004. Pyrometers, on mahogany base, with dial and needle, 
spirit lamp, brass and iron rods. Each, $6.00 
3005. —Ditto, ditto, larger, with spirit reservoir of brass, running 
the whole length of the apparatus, for heating the rods uni- 
formly, having sliding cap to shut off the flame. $12.00 
Quetschhahne. See Pinch cocks. 
Quick Filtering Apparatus. See Filtering Apparatus. 
Quilled Receivers. See Receivers. 
3006. —Radiator, Leslie’s. $2.50 
3007. —Rasps, round, for filing corks. 
4 5 6 7 8 in. 
.25 .30 .40 .45 .50 each. 
Reagents. See Chemicals at the back of the book. 
3008. —Reagent Boxes, for sets of 9 reagents, fdled. Each, 2.50 
3009. —Ditto, ditto, ditto, having places for blow-pipe, platinum 
box, tweezers, etc., filled. Each, $4.00 
3010. —Ditto, ditto, including blow-pipe, tweezers, etc. “ 6.00 
3011. —Ditto, Chests, medium size. “ 10.00 
3012. —Ditto, ditto, large. “ 12.00 
3013. —Receivers, for retorts, plain, genuine Bohemian glass. 
2 2| 5 galls. 
$2.00 3.50 5.00 each. 
3000 
3001 
3010 150 
E. B. benjamin’s descriptive catalogue 
3012 
3014. —Receivers, for retorts, tubulated, unstoppered. 
8 16 32 oz. 
.45 -55 .70-each. 
3015. —Ditto, Bohemian glass, quilled. 
8 oz. 16 32 | gall. 1 
.70 .80 81.20 1.70 2.00 each. 
3016. —Ditto, glass, tubulated and stoppered. 
2 oz. 4 8 16 32 | gall. 1 
.30 .40 .50 .60 .75 81.00 1.50 each. 
3013 
3014 
3015 
3016 
3018 
3017. —Ditto, spherical, long-necked and ring top, tubulatures at 
the side, of Bohemian glass. 
i 1 2 gall. 
82.00 3.00 4.00 each. 
3018. —Ditto, Florentine, French, plain, quarts. Each, .75 
3019 .—Ditto, ditto, Bohemian, with ground glass stopper in neck. 
1 qt. i gall. 1 
81.50 2.25 2.50 each. OF CHEMICAL AND PHYSICAL APPARATUS. 
151 
3020. —Receivers, porcelain. 4 oz., $1.25 8 oz., 1.50 each. 
3021. —Ditto, earthen-ware, £ gall. Each, $1.25 
3027 
3022 
3023 
3025 
3029 
3031 
3022. —Reduction Tubes, of glass, with 1 bulb. Each .20 
3023. —Ditto, ditto, ditto, 2 “ “ .30 
3024. —Ditto, ditto, ditto, 3 “ “ .50 
3025. —Ditto, ditto, ditto, 1 “bent end. “ .25 
3926.—Ditto, ditto, porcelain, for reduction by hydrogen. “ 1.25 
Reflectors. See Parabolic Reflectors. 
3027. —Retorts, plain glass, single tube, best Bohemian glass. 
1 oz. 2 4 8 16 32 | gall. 2 4 7. 
.20 .25 .30 .40 .45 .60 .90 $2.25 3.50 6.00 each;. 
3028. —Ditto, ditto, ditto, with double tube, Liebig’s. 
8 oz., .80 16 oz., $1.00 each. 
3029. —Retort Glass, plain Bohemian, two bulbs in the neck, 
for preparing oxygen gas from red oxide of mercury. 
2 4 6 oz. 
.30 .35 .55 each. 
3030. —Retorts, glass, light, French tubulature, without stopper. 
1 oz., .12 2 oz., .15 each. 
3031. —Ditto, ditto, Clark’s, plain, with tube receiver. Each, .50 
3032. —Ditto, ditto, Faraday’s. “ .50 
3033 
3034 
3033.—Ditto, ditto, best Bohemian, tubulatured and stoppered. 
2 oz. 4 8 16 32 | gall. 1 3 4 5 7 
.35 .40 .50 .55 .70 81.20 1.50 3.50 4.50 7.00 9.00 each. 152 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
3034. Retorts, porcelain, best, glazed inside, tubulated and stop- 
pered. 
4 8 16 oz. • 
81.40 1.65 1.90 each. 
3035. —Ditto, ditto, detached heads. Each, 81.50 
3036. —Ditto, glass, German, for micro-chemical operations, plain, 
assorted sizes. Per doz., 82.50 
3037. —Ditto, tubulated and stoppered. “ 3.50 
Retort Funnels. See Funnels. 
3038. —Retorts, stoneware. 
4 8 16 32 oz. 
$1.00 1.25 1.50 2.00 each. 
3039. —Ditto, iron, loose cover. 
i 1 2 3 4 8 16 pts. 
82.75 3.00 3.75 4.25 5.00 6.50 10.00 each. 
3045 
3040 
3053 
3059 
3040. —Ditto, copper, loose heads, ground and fastened with clamp, 
for making oxygen. 1 qt., 84.50 2 qts., 6.00 each. 
3041. —Ditto lead, for making hydrofluoric acid. Each, $5 to 25.00 
3042. —Ditto, platinum, according to size. 
Per gramme, .40 to .45 
Ditto, holders. See Supports. 
Revolving Electro-Magnet. See Magnet. 
3043. —Riders, of aluminum. Each, .75 
Ring Burners, various kinds. See Burners. 
3044. —Rings, concentric, sets of 7. .80 
Ditto, of straw. See Straw Rings. 
3045. —Roasting Dishes, according to size. Per 100,87.50 to 10.50 
3046. —Roasts, Plattner’s, used in quantitative analysis of metallic 
ores before the blow-pipe. Each, 82.00 
3047. —Roasting Charcoal, pieces. Per doz., .75 OF CHEMICAL AND PHYSICAL APPARATUS. 
153 
3048. —Roasting Charcoal, forms for making, complete. 
Per doz., $3.75 
3049. —Rods, of glass, for electric excitation. Each, 1.00 
3050. —Ditto, ditto, ordinary, assorted sizes. Per lb., .GO 
3051. —Ditto, ditto, extra large, Bohemian, or French, assorted sizes 
Per lb., $1.00 
Ditto, ditto, stirring. See Stirrers. 
3052. —Rod of Shellac, for resinous excitation. 2.00 
3053. —Rubber Balls. Small, $5.00 large, 6.50 Per doz., 
3054. —Rubber Finger Tips, for protecting fingers in handling 
acids and poisonous substances in the laboratory and in the 
dissecting room; thin, and of the very best quality. Each, .10 
3055. —Rubber, sheet, French, thin. 
No. 8, .50 No. 11, .60 per oz. 
3056. —Ditto, stoppers, American, solid. 
Nos. 5| 5 4 3 2| 2 1 
$1.50 1.50 2.25 3.75 5.00 6.00 9.00 per 100. 
3057. —Ditto, ditto, of best French, flexible unvulcanizedgum, each 
cork accurately conical and perfectly smooth, cast in my own 
moulds, solid, 1, 2, and 3 holes. 
Nos. 1 2 3 456789 10 11 12 
.08 .09 .10 .15 .20 .25 .30 .35 .50 .60 .65 .75 each. 
Or $9.00 per lb. 
3057 
No. 9, 1-fr X 1A X IfV 
“ 8, li x li x A 
“ 7, li x 11 x t 
“ 6, 1A x H x li 
Other numbers, sizes in proportion to above. 
3058. —Ditto, ditto, ditto, in the form of Whipstock, to cut off, as 
required. Each, $10.00 
3059. —Ditto, Syphon Primers. See Rubber Tubing. “ 1.50 
3060. —Ditto, Urinals. “ 1.00 
3061. Rupert Drops. Per doz., .50 154 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
3066 
3079 
3062 
3082 
3075 
3069 
3084 
3062. —Russian Spirit Lamps. Each, $2.00 
Saccharimeters. See Polarization. 
Saccharometers. See Hydrometry. 
Safety Funnels. See Funnel Tubes. 
Ditto, Lamps. See Davy’s. 
3063. —Salometers. “ 1.25 
3064. —Sand Baths, cast iron, with handles to 9 in. “ 2.25 
3065. —Ditto, ditto, spun, best, French, deep, very stout. 
4 5 6 7 in. 
.40 .50 .60 .75 each. 
3066. —Ditto, ditto, shallow. 
2 3 4 5 6 in. 
.20 .25 .30 .35 .40 each. 
3067. —Ditto, ditto, copper, 3, 4, 5, and 6 inches. Per inch, .10 
3068. —Ditto, Glasses, for mariners, wood. 
15 seconds, $1.25 30 seconds, 1.50 
3069. —Ditto, ditto, small, of wood, 3, 5, 10 minutes. Each, .50 
3070. —Ditto, ditto, of brass, small, 5 minutes. “ .75 
3071. Saw, small, with cocoa handle. .75 
3072. —Scales, apothecaries, with brass beams and horn pans, 
without pedestal. 
4 4£ 5 6 7 8 in. beam. 
$1.40 1.50 1.85 2.10 3.00 4.00 each. 
3073. —Ditto, ditto, with brass pans. 
4 5 6 in. beam. 
$1.00 1.25 1.50 each. 
3074. —Ditto, ivory, for measuring the button in assay accurately. 
Each, $5.00 
3075. —Ditto, prescription, various. 5.00 to 20.00 
3076. —Ditto, small, in tin boxes, with weights. Each, 1.25 OF CHEMICAL AND PHYSICAL APPARATUS, 
155 
3077. —Scales, prescription, in morocco cases. Each, $1.25 
3078. —Scale Pans, of horn, adjusted with silk cord. 
Nos. 12345 6 7 8 9 
Diam., If 2 2| 3 3| 4 4| 4| 5|in. 
Price, .40 .50 .65 .75 .90 $1.25 1.45 1.75 2.00 each. 
See also Balances, page 17. 
3079. Schuster’s Dropping Flasks, stoppered. Each, .25 
3080. —Scissors. Each, .50 to $1.00 
3081 .—Ditto, tinsmiths’, for cutting metals. “ 2.50 
3082. —Scoops, of horn. “ .12 
3083. —Scoriflers, Freiburg usual form. Per 100, 3.50 
3084. —Ditto, ditto, urn shape. “ 20.00 
3085. —Ditto, holders, of iron, with 9 partitions, for holding scori- 
fiers, when various assays are under examination together. 
Each, $1.50 
3086. Scorifying Moulds, of cast 
iron, with 9 small round cavities 
Each, $1.00 
Scorifier Moulds. See Moulds. 
Ditto, Tongs. See Tongs. 
3087. —Scratch Brushes, or But- 
ton Brushes, for use in assay, of 
hard bristles. Each, .50 
3088. —Ditto, Brush Wire, Per lb., $5.00 
3089. —Screen, of iron wire, to surround the Bunsen or spirit 
lamp, when burning under a tripod, to protect the flame from 
currents of air. Each, $1.00 
3090. —Screws, brass head. “ .10 
3091. —Seidlitz Powder Cups, with partitions. “ .60 
Sets of chemical annaratus for beginners. See the back of 
the book. 
Separatory Bottles.' See Bottles. 
Ditto, Funnels. See Funnels. 
3092. —Shades, Lilly, for covering rare objects. Each, $2 to 15.00 
3093. —Sharpeners, for knives. ‘ .50 
3094. —Sieves, brass, 10, 20, 30, 40, 50, 60, 80, 100 meshes to the 
inch; 5 inches. Each, .50 to $1.25 
3095. —Ditto, ditto, ditto, 7 inches. “ .75 to 1.50 
3096. —Ditto, ditto, ditto, 12 “ “ 1.00 to 2.00 
3097. —Ditto, horse hair. “ 1.25 
3086 
3091 156 
E. B. benjamin’s descriptive catalogue 
3098. Sieves, silk bolting cloth, small, French. 
3 4 5 6 in. 
.50 .75 $1.00 1.50 each. 
3099. —Ditto, box, Griffin’s, with two partitions. Each, $2.50 
3100. —Ditto, Plattner’s, for use before the blow-pipe. “ .50 
3101. Silver, pure, for mineral tests. Per ounce, 3.00 
3102. Skins, Cat, for electrical excitation purposes. Each, 1.25 
3103. —Ditto, Chamois, for handling brass apparatus. “ .75 
3104. Slips, of glass, with edges carefully ground, to prevent 
cutting the hand, for the testing of small quantities of liquid 
in quantitative analysis; also convenient for color test, 1x3 in. 
Per doz., .75 
3105. —Ditto, of unglazed porcelain, to try streak or color of 
minerals. Per doz., .75 to $1.00 
Smelling Bottles. See Pungents. 
3106. —Soda Paper, for preparing cartridges in blow-piping. .50 
3107. —Soda Water, apparatus for making. $7.50 
3108 
3109 3110 ’ll ’12 ’13 ’14 ’16 
3108. —Sodium Spoon, for holding sodium in water under 
cylinder. .50 
3109. —Ditto, Flame, apparatus for inverting. $3.50 
Soufllets, cylindric, or glass-blowing table. See Glass 
blowers’ table. 
3110. —Spatulas, bone, with pointed handle. 
in., .20 5 in., .25 each. 
3111. Ditto, with spoon. 
4 5| 6 in. 
.20 .25 .30 each. 
3112. —Ditto, bone, with double end. Each, .25 
3113. —Ditto, and spoon, ivory, assorted, small. “ .15 OF CHEMICAL AND PHYSICAL APPARATUS. 
157 
3114. —Spatulas, of glass, 6 inches. Each, .15 
3115. —Ditto, of brass, double end, 4 inches. “ .75 
3116. —Ditto, and spoon, of brass, adapted for weighing small 
quantities. ' $1.25 
3117. —Ditto, of horn. 
2| 4 5 6 7 7| 8 in. 
.10 .15 .20 .25 .30 .35 .40 each. 
3118. —Ditto, ditto, with spoon. 
3 3| 4 4| 5 5| 6 7 8 in. 
.15 .18 .20 .23 .25 .28 .35 .40 .50 each. 
3119. —Ditto, platinum. Per grain, .3 
3120 
3121 
3122 
3123 
3126 
3128 
3120. —Ditto, porcelain, with handle. 
4| 5| 6| 7| 8| in. 
.40 .45 .50 .65 70 each. 
3121. —Ditto, ditto, square end. 
11| 14i 17| in. 
.75 .90 $1.25 each. 
3122. —Ditto, ditto, double. 
11| 14f 17 in. 
.50 .60 .90 each. 
3123. —Ditto, ditto, with spoon. 
11 14| 17 in. 
.55 .70 $1.00 each. 
3124. —Ditto, steel, double ends. Each, .25 to .75 
3125. —Ditto, ditto, cocoa handle, length of blade— 
3 4 5 6 7 8 9 10 in. 
.25 .30 .35 .40 .50 .60 .80 $1.00 each. 
3126. —Specific Gravity Bottles, plain, solid stopper, cut glass. 
100 500 1000 grs. 
$1.00 1.75 2.50 each. 
3127. —Ditto ditto, ditto, ditto. 
10 25 50 100 grams. 
$1.25 1.50 1.75 2.00 each. 158 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
3128. —Specific Gravity Bottles, perforated stopper, light blown 
glass. 
100 250 500 1000 grs. 
.75 $1.00 1.50 2.00 each. 
3129. —Ditto, ditto, ditto, ditto, in fine chamois-lined leather cases, 
with counterpoise. 
100 250 500 1000 grs. 
$2.50 3.00 4.00 5.00 each. 
3130. —Ditto, ditto, ditto, ditto. 
10 25 50 gram’s. 
$2.50 3.50 4.00 each. 
3131. Ditto, ditto, ditto, ditto, in case, with fine chamois-lined 
leather case, of cut glass, with solid stopper. 
25 grams. $4.00 100 grams. 7.50 each. 
3132. —Ditto, ditto. ditto, ditto. 
100 500 1000 grs. 
$3.50 4.00 4.50 each. 
3133. —Ditto, ditto, ditto, with thermometer. 50 grm’s, 3.50 
3134. —Ditto, ditto, Flasks, round, stoppered, 1000 grs. Ea. $2.00 
3135. —Ditto, ditto, ditto, not stoppered, 1000 “ “ .75 
3136. —Spectroscopes, Browning’s, for direct vision, with five 
prisms. Each, $15.00 
3137. —Ditto, ditto, with cover, larger. “ 18.00 
3143 
3138 
3147 
3152 
3138. —Ditto, ditto, “ Heidelberg laboratory,” single prism, with 
2 lamps, millimeter scale, 2 stands, 3 scales on drawing 
paper, 1 small chart and an assortment of platinum holders 
for the salts, complete. Each, $65.00 
3139. —Ditto, Browning’s elegant “ model,” two prisms, in a highly 
polished mahogany case, with lock and key, and handle to carry 
it, having a swivel arrangement for the telescope, so that the OF CHEMICAL AND PHYSICAL APPARATUS. 
159 
spectrum may be extended and clearly defined, with tangent 
screw motion. It will widely separate the D lines. Ea. $160.00 
3140. —Spectroscopes, larger; imported only on special order. 
Spectroscopic Charts. See Charts. 
3141. —Ditto, Lamps, for evaporating metallic substances. Ea. $3.50 
3142. —Ditto, Stand, for holding salts in lamp flame. “ 1.50 
3143. —Ditto, Lamp and Stand together. “ 4.75 
3143a.—Ditto, ditto, for alcohol. “ 2.50 
Ditto, Support. See Supports. 
3144. —Spectrum, Browning’s lantern arranged for showing 
on screen, small size. $50.00 
3145. —Ditto, large size, complete. 150.00 
Spirit Lamps. See Lamps. 
3146. —Spiral, or Spotted Tube. $3.00 to 5.00 
3147. —Spoons, Blow-pipe, of iron. Each, .25 to .50 
3148. —Spoons, bone. 
2| 5 6 in. 
.10 .20 .25 each. 
3149. —Ditto, brass, turned, for weighing powders. Each, $1.25 
3150. —Ditto, tea, of glass. Per doz., 1.50 
3151. —Ditto, dessert, of glass. Each, .40 
3152. —Ditto, table, “ “ .50 
3153. —Ditto, dipping, ladle form, of glass. “ 1.00 
3154. —Ditto, horn, first quality. 
3 6 7 8 9 in. 
.18 .25 .30 .35 .50 each. 
3155. —Ditto, horn, ordinary. 
5 5| 7 7| 8 in. 
.15 .18 .20 .25 .30 each. 
And wide bowl, 7£ in., .40. 
3156. —Ditto, iron. Each, .40 
3157. —Ditto, porcelain. 
5| 7 9 9| 13| in. 
.30 .50 .60 .75 $1.50 each. 
3158. —Ditto, tea, porcelain. Per doz., $3.00 
3159. —Ditto, ditto, ditto, perforated, for dipping crystals or 
leeches, oval. Each, .50 
3160. —Ditto, ditto, ditto, ditto, round. “ .60 
3161. —Sticks, of prepared coal, for breaking glass. Per doz., .60 
3162. —Ditto, ditto, ditto, ditto, larger. “ .70 
3160 160 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
3163 
3177 
3178 
3180 
3198 
3181 
3186 
3176 
3163. Stills, of copper, with worm, tinned. 
1 2 3 galls. 
$12.00 15.00 20.00 each. 
3164. —Stirrers, of glass, ends polished. 
6 9 12 in. 
.30 .45 .60 per doz. 
3165. —Stool, insulating. $5.00 
3166. Stop Cocks, of brass, mounted on foot, with double ends, 
for tubing, with screw knobs, for securing to table. Each, $1.50 
3167. —Ditto, ordinary. “ 1.25 
3168. —Ditto, with double ends, for tubing. “ 1.25 
3169. —Ditto, one end for tubing, 1 male screw. “ 1.25 
3170. —Ditto, double male screw. “ 1.25 
3171. —Ditto, ditto, female “ “ 1.25 
3172. —Ditto, male and female screw. “ 1.25 
3173. —Ditto, brass, one end for tubing and one for inhaling. Ea. 1.00 
3174. —Ditto, earthenware, English. 
4| in. long, $3.00 9£ in. long, 4.50 each. 
3175. —Ditto, ditto, French. 
7f 9 10 12 15 in. 
$2.50 3.00 4.00 5.00 6.00 each. 
3176. —Ditto, glass, for vinegar and acids, small. Each. 1.25 
3177. —Ditto, ditto, Geissler’s, of glass, for connections. “ 1.50 
3178. —Ditto, ditto, heavy. “ 1.50 
3179. Ditto, for gas generators. “ 1.25 
3180. —Ditto,Deleuil, of silver, for assay, by the wet way. “ 30.00 OF CHEMICAL AND PHYSICAL APPARATUS; 
161 
3181. —Stop Cocks, brass, for Marsh’s arsenic test. Each, $1.50 
3182. —Ditto, one end bent and the other end ground, for fitting 
tubulatures, of glass. Each, $1.25 
3183. —Ditto, of glass, one end enlarged to receive a cork. “ 1.25 
Stoppers, caoutchouc. See Rubber. 
3184. —Storm Glasses, plain. « 1.00 
3185. —Ditto, with thermometer. “ 2.50 
'3186.—Stoves, gas, small vulcan.. “ .75 
3186a.-Ditto, ditto, larger.. 
Nos. 1 2 3‘ 
$1.25 1.50 1.75 each; 
3187. —Ditto, Kerosene. No. 3, $5.00 No. 4, 6.00 each. 
3188. —Ditto, ditto, with boiler, for heating purposes. Each, $4.50 
3189. —• Straining Baskets, porcelain, with handle on the 
side. Each, $3.25 
3190. —Ditto, with handle on the top, shallow. “ 3.00 
3191. —Ditto, ditto, deep. “ 3.50 
3192. —Ditto, earthenware, with; handle-on the side. 
Each, $2.00 to 3.00 
3193. —Ditto, with handle on top. “ 2.50 to 3.50 
3194. —Straining Dishes, porcelain, perforated for crystals, flat 
bottom. 
7 9 10f 12 ins. 
.75 $1.00 1.25 1.50 each. 
3195. —Ditto, round bottom, large size, glazed inside and 
out. 
13 in., $3.50 15| in., $4.50 each. 
3196. —Ditto, porcelain, with handle on each side, holes small}.6 in. 
diameter. Each, $1.00 
3197. —Ditto, porcelain, small hemispherical, with handle on one 
side. 
No. 1, $1.25 No. 2, .75 each. 
3198. —Ditto, Plates, French, with rim around the top. 
20 25 30 cc. 
.35 .40 .50 
3199. —Straw Rings, French plaited, for supporting round bot- 
tom vessels, dishes, flasks, retorts, 
3 3| 44 5| 7 9 in. 
.18 .20 22; .27 .35 .40 each. 
Suction Tubes, for filling bulbs, etc., see Filling Tubes. 
3200. —Supports, for potash bulbs, with hooks. Each, $1.50 162 
E. B. benjamin’s descriptive catalogue 
3202 
3204 
3201. —Supports, for objects in lamp flame. Each, $1.50 
3202. —Ditto, for burettes, of brass, of light iron base, and clamps, 
with cork lining for two burettes. Each, 3.50 
3203. —Ditto, of brass, new style, with porcelain foot for two 
burettes, for micro-chemical purposes, the holders shaped to the 
burette, and nicely cork lined. Each, $5.00 
3207 
3204.—Ditto, of brass, for two burettes, spring clamp, with cork 
lining, and fine oiled black walnut foot. $4.00 
3206 
3208 OF CHEMICAL AND PHYSICAL APPARATUS. 
163 
3205. —Supports, of iron, for two burettes, cork lined clamps 
Each, $3.50 
3206. —Ditto, ditto, of soft wood, with cork lined jaws, for 
1 $1.25 2 burettes, $1.50 
3207 .—Ditto, ditto, with round wooden foot, with clamps, hinged 
and cork lined, for 
4 $3.50 6 burettes, $5.00. 
3208. —Ditto, ditto, revolving, of highly polished pear wood, for 
5 8 12 burettes, 
$4.50 5.00 6.00 each. 
3209. —Ditto, for burettes, revolving, japanned tin, with base and 
staff, of walnut. 8 burettes, 4.00 each. 
3213 
3212 
3216 
3210 
3215 
3218 
3210. —Ditto, ditto, pear wood, square porcelain base, with brass 
stafT. 6 8 12 burettes. 
$5.00 6.00 7.50 each. 
3211. Support, Hoffman’s, new, with four Bunsen’s burners, of 
highly polished brass. $8.00 164 
E. b. benjamin’s descriptive catalogue 
3212. —Support, Miscliterlich's, for the examination of fluids un- 
der the spectroscope. $7.50 
3213. —Ditto, earthen, for crucibles, or “fromages” .20 
3214. —Ditto, porcelain, for small dishes. .25 
3215. —Ditto, Table, including fork and drying tripod. 
6 9 12 in. high. 
.75 $1.00 1.25 1.50 each. 
3216. —Supports, or Filter Stands, for single funnel. Each, $1.00 
3217. —Ditto, or ditto, for two funnels, single arm. “ 1.25 
3218. —Ditto, ditto, for six funnels and double arm. “ 1.25 
3219. —Ditto, or Filtering Stands, to cover beaker, according to 
Fresenius. Each, $1.25 
3220. —Ditto, with large wooden ring. “ 1.50 
3221. —Ditto, with two wooden rings. “ 1.50 
3226 
3233 
3227 
3234 
3229 
2236 
3237 
3222. —Ditto, of iron, with triangular base arranged for holding 
spirit lamp. Each, $1.50 
3223. —Ditto, Hoffman’s, with wood-lined rings. “ 2.75 
3224. —Ditto, wood, for sustaining tubes and connecting apparatus, 
black varnished wood, Griffin’s form, 314. Each, $1.75 
3225. —Ditto, ditto, ditto, ditto, mahogany. “ 2.00 
3226. —Ditto, Test tubes, for 13 tubes. " .75 OF CHEMICAL AND PHYSICAL APPARATUS. 
165 
3227. —Supports, Test tubes, polished mahogany, with pins, for 
draining. Each. $1.50 
3228. —Ditto, ditto, for 18 tubes. “ 1.00 
3229. —Ditto, ditto, mahogany, with drawer and draining pins. 
Each, $2.00 
3230. —Ditto, ditto, universal, circular. 44 2.00 
3231. —Ditto, ditto, japanned tin, for six test tubes, Each, .60 
3232. —Ditto, for retorts, wire, two rings. “ .90 
3233. —Ditto, ditto, iron, “ “ $1.00 
3234. —Ditto, ditto, “ three rings. “ 1.25 
3235. —Ditto, ditto, brass, “ with porcelain foot. 44 4.50 
3236. —Ditto, ditto, of wood, Gay Lussac form. “ 1.25 
3237. —Ditto, ditto, “ Shellbach, round iron base, two 
joints and sliding clamp. Each, $2.00 
3238. —Ditto, ditto, iron base, two joints and sliding clamps, 
polished. Each, $2.50 
3239. —Ditto, ditto, French, upright. “ 1.50 
3240 
3247 
3250 
3240. —Ditto, ditto, universal. 44 2.00 
3241. —Ditto, ditto, 44 fine quality, heavy. 44 3.50 
3242. —Ditto, ditto, “ highly polished, pear wood. “ 4.00 
3243. —Ditto, feet of porcelain, round. “ .50 
3244. —Ditto, japanned, for flasks in Bunsen’s quick filtering 
apparatus. Each, $3.50 
Supports, other forms made to order. 
3245. —Stand, of iron, with polished fork, Hoffman’s. 44 1.50 
3246. —Ditto, 44 wood, with fork, small. “ .75 166 
E. b. benjamin’s descriptive catalogue 
Swimmers. See Burette Swimmers. 
3247. —Syphon, glass, plain. 12 in., .25 15 in., .30 each. 
Ditto, Acid. See Acid Syphons. 
3248. —Ditto, pipette, glass, new style, various. Each, .75 
3249. —Syringes, glass. Each, .50 to $1.50 
3248 
3248 
3253 
3254 
3262 
3250. —Ditto, metallic, male, in mahogany cases. Each, $4.00 
3251. —Ditto, male and female, “ “ 5.00 
3252. —Ditto, Fire, of glass. “ 6.00 
Ditto-, brass. See Air Pumps. 
3253. —Tank, for holding solutions when under examination by 
the Lantern; consists of two glass plates, separated by rub- 
ber partition which forms the wall of the tank, on three 
sides. $3.50 
3254. —Tantalus Cup. 2.00 
3255. —Tapers, wax, in small boxes. Per box, .25 
3256. —Ditto, ditto, to burn in oxygen, etc. Per pair, .20 
3257. —Telescope, with mounting support, on legs, made by the 
celebrated Merz, of Munich, in leather case, achromatic, power 
50 times. $30.00 
3258. —Telegraph, working model, with reel. 8.00 
Telegraphic Apparatus, other, special to order. 
3259. —Tellurian, for showing the phenomena of the seasons. 
$13.00 
Test Chests. See Reagent chests. 
Tests, blow-pipe cases. See Blowr-pipe Cases, etc., at the 
end of the book. OF CHEMICAL AND PHYSICAL APPARATUS. 
167 
3260. —Test Dishes, porcelain, for colored precipitates.. Each, .25 
3261. —Ditto, Glasses, conical, on foot, without lip. “ .40 
3262. —Ditto, ditto, French, ditto, ditto, with lip. 
i 1 2 4 8 16 oz. 
.15 .18 .25 .30 .40 .50 each. 
3263. —Ditto, ditto, micro-chemical, of thin glasss, very small, made 
by blow-pipe. Per doz., $1.75 
3264 
3266 
3269 
3271 
3272 
3273 
3274 
3264. —Test Lead Measure, Plattner’s. Each, .50 
3265. —Ditto, ditto, Sieve, brass, Plattner’s. “ .50 
Test Metals. See Minerals, at the back part of this book. 
3266. —Test, Marsh’s, arsenic. 75 
3267. —Test Papers, assorted. Per sheet, .5 
3268. —Test Tubes, infusible Bohemian glass, 6x|in. 
Per doz., $1.25 
3269. —Ditto, French and German, with the ends even thickness 
throughout; free from lead. 
3 4 5 6 7 9 10 in. long. 
■fc to t » to | to i '« to t 1 1$ 1* in- wide about. 
.30 .40 .50 .60 .75 $1.50 2.25 per doz. 
Each one of the above Test Tubes is carefully wrapped in paper, to keep them 
from chemical contact, and to preserve the lips from breakage. The diameters 
are averaged. 
3270. —Ditto, in nests of 
3 6 9 16 
.20 .30 .50 .70 each. 
3271. —Ditto, with pasteboard cases, in nests of 
6 9 
.40 .60 each. 
3272. —Ditto, on foot. 
1£ 2 4 6 8 in. 
.40 .45 .60 $1.00 1.25 per doz. 168 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
3273. —Test Tubes, stoppered, 5 in. Per doz., $1.25 
Test Tube Brushes. See Brushes. 
3274. —Ditto, Holders, wood, new form. Each, .20 
3275. Ditto, ditto, brass, with sliding band. « .50 
3276. —Ditto, ditto, " “ wood handle. “ .60 
3277. —Ditto, ditto, wire, with wood handle. « .50 
Ditto, ditto, and supports. See Supports. 
3278. —Testing Slab, plain, of porcelain. « .50 
3279 
3281 
3279. —Theatre Pantin, with glass pillars, for dancing figures. 
$15.00 
3280. —Thermo Electric, pair of bismuth and antimony. $2.00 
3281. —Ditto, ditto, Pile. Each, $30.00 to $35.0 
3282. —Thermometers, Axillary. 6 in., $2.00 7 in., $3.00 each. 
3283. —Ditto, Beer, accurately registered, Fahrenheit and Cen- 
tigrade. Each, $2.00 
3284. —Ditto, chemical, 8 in. long, up to 212 deg. Fah., paper scale 
in glass tube, and pasteboard cases. Each, .85 
3285. —Ditto, ditto, ditto, ditto, 10 in. long. “ .90 
3286. —Ditto, ditto, ditto, ditto, 12 “ “ $1.00 
3287. —Ditto, ditto, ditto, ditto, 15 “ “ 1.20 
3288. —Ditto, ditto, ditto, ditto, up to 2G0 deg. 
12 in. long, $1.25 15 in. long, 1.25 each. 
The largest thermometers are smallest in diameter. 
3289. —Ditto, ditto, Celsius paper scale, 50 to 100 deg. Each, 1.50 
3290. —Ditto, ditto, Celsius, or Centigrade, up to 350 or 410 deg. 
Each, $2.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
169 
3291. —Thermometers, Chemical, Milk scale, Fah., enclosed in 
glass tube, graduated up to 212 deg. Each, $1.50 
3292. —Ditto, ditto, ditto, ditto, running from 280 to 330 deg. 
Each, $1.75 
3293. —Ditto, ditto, ditto, ditto, running from 400 to 640 deg. 
Each, $2.00 
3294. —Ditto, ditto, ditto, ditto, running up to 660 and 800 deg. 
Each, $2.25 
3295. —Ditto, ditto, ditto, Fah. and Reamur, up to 700 deg. “ 3.00 
3296. —Ditto, ditto, ditto, engraved on the tube, Centigrade or 
Celsius, up to 100 deg. Each, $2.25 
3297. —Ditto, ditto, ditto, up to 200 deg. “ 2.50 
3298. —Ditto, ditto, ditto, up to 360 “ “ 3.00 
3299. —Ditto, ditto, ditto, Fah., up to 200 deg. “ 2.25 
3300. —Ditto, ditto, ditto, ditto, “ 400 “ “ 2.50 
3301. —Ditto, ditto, ditto, ditto, “ 600 “ li 3.00 
3302. —Ditto, ditto, ditto, ditto, above. “ 3.50 
3303. —Ditto, ditto, ditto, ditto, double scale, large, with brass top 
Fahrenheit, 300. Each, $3.00 
3304. —Ditto, Differential, Leslie’s. $2.50 to 4.00 
3305. —Ditto, ditto, ditto, having two limbs, joined with tightly- 
fitting ground glass stop-cock. Each, $4.00 
3306. —Ditto, Day and Night, glass. li 4.00 
3307. —Ditto, House, in mahogany, Fahrenheit and Centigrade, 
French spirit. Each, .40 
3308. —Ditto, ditto, ditto, japanned tin, Fahrenheit. 
6 9 12 in. 
.50 .75 $1.00 each. 
3309. —Ditto, Medical, for ascertaining heat of the human body, 
during fever or otherwise. Each, $5.00 
3310. —Ditto, Metallic, watch form, silver case. “ 20.00 
3311. —Ditto, ditto, revolving, for pocket, Fahrenheit and Centi- 
grade, German silver case. Each, $10.00 
3312. —Ditto, Sugar-house, French, accurately graduated, Fahren- 
heit and Centigrade. Each, $10.00 
3313. —Ditto, Window, Milk glass, silvered, etc., Fahrenheit, 
Celsius, and Reamur. Each, $1.00 to $5.00 
3314. —Thermometer Tubes. Each, .25 
3315. —Thieves, for drawing or decanting spirits, glass. “ .75 170 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
3316. —Thunder House, mahogany. Each, $8.00 
3317. —Tin Foil, for blow-pipe experiments. Per square foot, .15 
3318. —Tissue Figure. $1.50 
3319 
3320 
3322 
3323 
3319. —Tongs, coal. 
13 14 17| in. 
$1.25 1.50 1.75 each. 
3320. —Ditto, ditto, ditto, heavy, with twine wound handles to pro- 
tect the hands from frost in cold weather. Each, 81.00 
3321. —Ditto, crucible, 6 in. japanned iron. “ .50 
3322. —Ditto, ditto, single bend steel, 9 in. “ 1.00 
3323. —Ditto, ditto, double bend. “ 1.25 
3324. Ditto, ditto, ditto, German silver. “ 1.50 
3325. —Ditto, ditto, ditto, nickleized. “ 2.25 
3326. —Ditto, ditto, steel, with heavy platinum points, double bend. 
Each, $6.00 
3327. —Ditto, ditto, German silver, with heavy platinum points, 
double bend. Each, $6.50 
3328. —Ditto, ditto, steel, with large double bend. c- 1.50 
3329. —Ditto, wrought iron, for sand crucibles, with ditto. “ 1.75 
3330. —Ditto, for lifting crucibles vertically, extra heavy. “ 2.00 
3331. —Ditto, ditto, French, double bend, 14 to 18 inches long. 
Each, $1.50 
3332. —Ditto, ditto, wrought iron, single bend, heavy, for handling 
sand crucibles. Each, $1.00 to $1.25 
3333. —Ditto, cupel, bent in the ends, of steel, to surround the 
cupel. Each, $1.50 OF CHEMICAL AND PHYSICAL APPARATUS. 
171 
3334. —Tongs, cupel, of galvanized iron, single bend. Each, $1.50 
3335. —Ditto, ditto, straight. “ 1.50 
3336. —Ditto, ditto, French, bent on the end, with strap “ 2.75 
3329 
3330 
3331 
3332 
3333 
3334 
3335 
3336 
3337 .—Ditto, Scorifier, one limb to fit around the scorifier, and 
one to fit over it, so that it can be moved in and out of the 
cupelle furnace very steadily. Each, $1.25 
Tools for Blow-piping, in chests. Sec Blow-pipe Apparatus 
at the close of the book. 
3338. —Torricellian Experiment. $4.50 
3339. —Touries, or Carboys, with 2 necks and tubulaturc near 
the foot, of French earthenware, for the distillation of acids, etc. 
60 litres, $12.00 100 litres, 15.00 each. 
3340. —Ditto, connecting pipe, for above. Each, $1.50 
3341. —Ditto, of German stoneware, glazed outside, 200 litres. 
Each, $50.00 
3342. —Ditto, stoneware connections, for ditto. “ 5.00 
3343. —Ditto, set of 2, with connecting pipe. “ 1.00 
3344. —Trays, lead. Each, .50 
3345. —Ditto, shallow porcelain, for holding jars containing cor- 
rosive liquids. Each, .20 to .40 172 
E. b. benjamin’s descriptive catalogue 
3337 
3350 
3339 
3352 
3353 
3356 
3343 
3360 
3346. —Trays, walnut, with partitions, for batteries. Each, $1.50 
3347. —Trellis Top, for furnace, of gauze wire. “ 1.50 
3348. —Triangles, of glass. “ .30 
3349. —Ditto, Plattner’s Blow-pipe. .25 
3350. —Ditto, ditto, porcelain. “ .50 
3351. —Ditto, ditto, wire. Per doz., .00 
Trimming Hammers. See Hammers. 
3352. Tripods, of galvanized iron, for gas burner. “ $7.00 
3353. —Ditto, ditto, brass, for spirit lamp. “ 9.00 
3354. —Ditto, of wrought iron, with two concentric rings. Ea., 1.00 
3355. —Ditto, ditto, ditto, with 7 concentric rings. “ 2.00 
3356. —Ditto, of iron, triangular shape, sets of three. 1.75 
3357. —Ditto, ditto, singly. 
Smallest, .50 Medium, .60 Largest, .75 each. 
Tubes, Arsenic, Chloride of Calcium, Combustion, Con- 
densing, Communicative, Gas, etc. See respective heads. OF CHEMICAL AND PHYSICAL APPARATUS. 
173 
Tubes, delivery. Per doz., $1.50 
Ditto, drying. Each, .50 
Ditto, filling. “ .50 
Ditto, j ulep. Per doz., .50 
Ditto, for Liebig’s condenser, ordinary size. Each, $1.00 
Ditto, ditto, ditto, 6 ft. “ 3.00 
3358. —Ditto, for musical sounds. “ .50 
3359. —Ditto, containing phosphorescent substances, in cases, $3.00 
and in frames, $5.00. 
3360. —Ditto, sealing, for receiving substances, the neck being 
afterwards closed by lamp flame. Per doz., $2.00 
3361. —Ditto, spiral electric. Each, 3.00 
3362. —Ditto, T large, of thermometer tubing. “ 1.00 
3363 
3363. —Ditto, 3 way, small, made of ordinary glass. Each, .25 
3364. Ditto, U, 
9 10 in. 
•25 .50 .60 each. 
3365. —Ditto, ditto, 3 bulbs, small. « .40 
3366. —Ditto, ditto, ditto, large. « .50 
3367. —Ditto, ditto, ditto, wide, with large bulbs. “ .75 
3368. —Ditto, ditto, Bohemian, with draining tube in the middle, 
long. Each, .75 
3369. —Ditto, ditto, with stop-cock. “ ,75 
3370. Ditto, for vaccine. Per hundred, 85.00 
3371. —Ditto, Specimen, perfectly round bottom, extra heavy 
glass, to bear corking. 
1| x f 2 x | 2 x f 2 x | 2f 2 x | in. 
.20 .25 .30 .35 .40 .43 per doz. 
2|x$ 3 x| 4x| 4x| 4 x f 4| x f in. 
.45 .48 .50 .55 .60 .65 per doz. 
5 x | 5x4 6 x 1 in. 
•75 .80 81.00 per doz. 
3364 
3365 
3366 174 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
3367 
3371 
3372 
3373 
3378 a 
3372. —Tubes, Vogel’s modification of WoulflTs apparatus, a sub- 
stitution for Woulff’s bottles by insertion into the neck of an 
ordinary bottle. $1.00 
3373. —Ditto, ditto, with funnel tube. 1.25 
3374. —Tubing, barometer. Per lb. -75 
3375. —Ditto, capillary, 3 ft. length. Each, .06 
3376. —Ditto, colored. Per lb. $2.00 
3377. —Ditto, soft Bohemian, French and German. Per lb., .75 
3378. —Ditto, ordinary soft glass, according to quantity. 
Per lb., .50 to .60 
3379. —Ditto, single up to | in. bore. Each, .10 
3380. —Ditto, of hard glass, from pure silicates, entirely free 
from lead, manufactured expressly for making combustions in 
oiyffl ip""n.nalysis. of genuine Bohemian glass and no other, 
i to 4 in.~ Per lb., $1.00 
3381. —Ditto, hard, free from lead, £ to f in. “ 1.25 
3382. —Ditto, glass, white, of large bore. “ 1.50 LIST OF 
Numbers, Diameters and Yards Per Pound 
OF DIFFERENT SIZES OF 
COFFER WIRE, 
ACCORDING TO THE BIRMINGHAM WIRE GAUGE. 
No. 
B.W.G. 
Diameter 
in 
Inches. 
Yards 
per 
Pound. 
No. 
B W.G. 
Diameter 
in 
Inches. 
Yards 
per 
Pound. 
No. 
B. W.G. 
Diameter 
in 
Inches. 
Yards 
per 
Pound. 
10 
.134 
6.007 
19 
.042 
62.98 
28 
014 
569.5 
11 
.120 
7.646 
20 
.035 
89.86 
29 
.013 
651.3 
12 
.109 
9.705 
21 
.032 
108.5 
30 
.012 
771.6 
13 
.095 
13.12 
22 
.028 
141.7 
31 
.010 
1111 
14 
.083 
17.36 
23 
.025 
176.1 
32 
.009 
1371 
15 
.072 
22.67 
24 
.022 
229.6 
33 
.008 
1736 
16 
.065 
26.29 
25 
.020 
277.2 
34 
.007 
2267 
17 
.058 
33.03 
26 
.018 
342.9 
35 
.005 
4444 
18 
.049 
45.83 
27 
.016 
434 
36 
.004 
6944 
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At the number of Catalogues issued is limited, please preserve this Copy. 
New York, January, 1873. 176 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
3383. —Tubing, Earthen, 1 inch bore. Each, $1.50 
3384. —Ditto, Porcelain. 
4 in. bore, 1| in. bore, 30 in. length. 
.75 $1.50 each. 
3385 
3394 
3396 
3400 
3385. —Ditto, ditto, with flanged ends. 
f 1 2 in. 
$1.00 1.50 2.25. 
3386. —Ditto, Rubber, black or unvulcanized. 
| | in. 
.20 .25 .30 per foot. 
3387. —Ditto, ditto, vulcanized, lengths cut to order. 
s & i k i t i in. 
.10 .12 .15 .20 .22 .30 .35 per foot. 
3388. —Ditto, ditto, ditto, full pieces. 
i i i f in. 
.08 .10 .12 .15 .20 .25 per foot. 
3389. —Ditto, ditto, ditto, heavy, | in. 25, .& in. 30 per foot. 
3390. —Ditto, rubber, extra heavy, barometer, to stand a heavy 
pressure, assorted sizes. Per lb. $2.00 
3391. —Ditto, thermometer. “ .75 
3392. Turmeric Paper. Per sheet, .05 
Twaddle’s Hydrometer. See Hydrometer. 
3393. —Twine Boxes. Each, $1.00 
3394. —Tourmaline Pincers. Each, $9,10, 11,12 
3395. —Twine, small, colored. Per lb. $1.50 
3396. —Upcast and Downcast Draught, model of, in glass, 
Each, $5.00 
3397. —Urinals, male, of glass. “ .25 
3398. —Ditto, “ of rubber. “ .50 OF CHEMICAL AND PHYSICAL APPARATUS. 
177 
3399. —Urinals, female, of glass, Each, .25 
Other articles under this letter. See their respective head- 
ings in the Catalogue under other titles. 
3400. —Vases, large glass, with flaring top, capacity 2 gallons, for 
holding sponges, etc. Each, $2.50 
3401. —Vapor Index, Lippincott’s. 
3402. Vases, earthen, French, flat bottom, for silver and other 
solutions held in acid, 10 galls., Each, $12.00 
3403. —V Tubes, for condensing limb, 7 ins. long and f in. bore. 
Each, .50 
3404. —Vials, Homeopathic, 1 drachm .15, 2 drachms .20 per doz. 
3405. —Ditto, Sample, of fine white French glass, for the preserva- 
tion of samples; 4 oz. capacity. Per doz.. $4.50< 
Vogel’s Gas Bottle. See Woulff’s Tubes. 
3406. —Washing Bottles, Faraday’s. 
8 oz. pts. qts. 
.60 .75 .90 each. 
3407. Watch Glasses, French, used in pairs, or singly as covers 
to beakers. 
1 1| 1| 2 2i 2| 3 in. 
.45 .50 .55 .75 $1.25 1.50 2.00 per doz. 
3408. —Ditto, Bohemian, ditto, ditto, ditto, ditto. 
2| 3 3| 4 4| 5 in. 
$1.65 2.25 2.75 3.25 3.75 4.50 per doz. 
Ditto, ditto, holders. See Holders. 
3409. —Watch Springs, for burning in oxygen. Per doz. .30 
3410. —Water Baths, copper, with 3 concentric rings and spun 
bottom. 
5 5| 6 in. 
$2.00 2.50 3.00 each. 
3411. —Ditto, ditto, ditto, nickleized. 
5 5| 6 in. 
$2.50 3.00 3.50 each. 
3412. —Ditto, copper, of extra large size, $4.50 
to $10.00. 
3413. —Ditto, porcelain. 
4 6 8 oz. 
$1.25 1.50 2.00 each. 
3414. —Ditto, ditto, with handle on side. Each, $1.00 
3415. —Water Hammer. .75 
3416. —Ditto, ditto, singing. 1.00 
3406 
3415 178 
E. b. benjamin’s descriptive catalogue 
BECKER & SONS’ FINE ANALYTICAL WEIGHTS. 
Weights, either graniiric or gratin, in French polished boxes 
lined with velvet, fitted separately. Brass weights lac- 
quered; the fraction X)f the gramme arc? platinum, except below 
20 milligramme, which are m$de of aluminum. Adjusted to the ut- 
most? accuracy. / / yf 
3417.—No. 1. Platinunugramme and down to -AryAgr. $10.60 
3418 .—No. 2. ’Five gr/nme piece and down tod/mgr. 12.00 
.'3419.—No. 3. Two twenty gramme pieces ajM down to 1 mgr., 3 
riders./ / / $14.00 
•'3420.—No. 4. Fiflly gramme piece and d/wn to 1 mgr., 3 riders. 
/ $16.00 
■3421«-/No. 5. Hundred gramme pi/o and down to 1 mgr., 3 riders. 
f / yr \ ' $18.00 
3422;—No. 6/ Two hundred gramme piece and down to 1 mgr., 3 
Aiders. / jT . / $24.00 
3423. —No/7. Five piece and down to 1 mgr., 3 
/ riders./ / /. . $28.00 
3424. —M). 8. Five kilo./ece'and down to < 70.00 
/ Gramme spid Grain Weights, No. 2. . 
3425. /Hundred gramme pie'ce and dowi to 1 mgr. 9.00 
3426.7-Ditto, ditto/ / “ 10 « 4.50 
3427/—Fifty gran/ie pieces and down to 1 mgr. y 9.00 
3428. —One kilo.Xnd down to 1 gr/nme, in mahogany c/se. 7.00 
3429. —Five humdred gramme pi/?e and down to 1 mmme, in 
/ mahogany /ase. / / $5.75 
3430. —One thousand grain pie® and down to sos gipins, 3 riders 
/ / / $18.00 
3431. —One /housand grain piffce and down to tU drain. 9.00 
3432. —Ten oiihces troy, witlf decimal subdivision, down to/Uinj 
ounce. / / >$14.00 
3433. —Sets of assay ton weights of 4 A. T. down/o A- A. Ti 6.00 
(The assay ton weights have been introduced by Dr. C/ F. Chandler, of the 
School of Mines, Columbia Ne*w York, where th/y are in/ise for con- 
venience in the assay of ores. The weight denominated by Dr. Chandler 
“One A. T.,” equals 29,i666 grammes, and contains, donsequerftly, as many 
milligrammes as there are troy ounces in a ton ayoirdup</s of 2,000 lbs. 
Therefore, if One A. T. of ore assays 1 milligramme, the Zon contains, of 
course, 1 ounce troy.) J OF CHEMICAL AND PHYSICAL APPARATUS. 
179 
Apothecary Weights, in lined with velvet. 
3434. —NoJL One troy ounce 4 grain. $2.75 
3435. —N/?2. 1000 grains to i’o grain. /' 7.00 
Jr '**% $ J? 
Troy Ounce Weights, Ju Brass Lacquered, M mahogany 
bbxesylined with / j/ 
3436. /o. I. Onejmnoe and down to | grain/ $2.75 
3437. -No. 2. two-ounce pieces and d/n to |/ain. 5.75 
3438. —No. 3.yFive-ouncc piece and down/o $ 7.00 
3439. —No. 4. Ten-ounce piece and to strain. 9.00 
3440. —No/5. Two twenty-ounce pieces and dfown to grn. 14.00 
3441. 6- One fifty-ounce piec/nd down to | grain. 18.50 
3442. —No. 7. Two 100-ounce pieces to 1 grain. 28.00 
3443. —No. 8. Two-hundred </ice piece and dowm to 1 grn. 38.00 
3444. —No. 9. Two 500-ounZe pieces / 48.00 
All the weights in the above list are adjusted according to 
the French standard and the ounce troy—31,10333 grammes. 
3445. W eights, sets of fractions of millegrammes, accurately 
balanced. Each, $2.50 
3446. —Ditto, French, brass, to -A oz. $1.50 
3447. Ditto, ditto, mahogany boxes, 50 .grammes 
down. - $3.00 
3448. —Ditto, ditto, 100 grammes down. 4.00 
3449. Ditto, ditto, 300 “ “ 6.00 
3450. —Ditto, ditto, 1000 “ “ $10.00 
3451. —Ditto, ditto, in polished wood boxes, 1 lb. to | grain down. 
3452. —Ditto, subdivision of grammes. .50 
3453. —Ditto, from 1 lb. avoirdupois, down to 4 oz. $4.50 
3454. Wire, brass, for making scratch brushes, etc.; No. 20 up to 
No. 40. Per lb. $3.00 to 5.00 
3455. —Ditto, copper, A in. Per lb. $2.00 
3456. —Ditto, silk wound. “ 3.00 
3457. —Ditto, copper, silk wound, for making Ruhmkorft’s coil and 
other electrical apparatus. Per gramme, .12 
3458. —Ditto, piano, for blow-pipe experiments. Per lb. $1.50 
3459. —Ditto, magnesium. Per foot, .06 
3460. —Ditto, gauze of copper, according to fineness. 
■ • Per sq. ft., .50 to $1.00 
3461. —Ditto, brass. “ .40 to .90 
3448. 180 
E. B. benjamin’s DESCRIPTIVE CATALOGUE. 
3462. —Wire, iron, price according to fineness. 
3463. —Woulff’s Apparatus, for washing Gases. 
8 oz. 16 oz. qts. 
85.50 6.60 8.00 
3463 
3464.—Ditto, with lamp. 
8 oz. 16 oz. qts. 
810.00 12.00 14.00 
Wurtz’ Apparatus, for Fractional Distillation. See Dis- 
tillation. 
3465—Woulff’s Apparatus, with gas bottles instead of flasks, 
and dispensing with lamp and stand. 84.00 to 6.50 
3466. —Zinc, Filings. Per lb. .25 
3467. —Ditto, Sheet. “ .20 
3468. —Zincs, for bichromate batteries, cast. .25 to 83.00 
3469. —Ditto, for Bunsen’s batteries, heavy rolled. 81.50 to 3.00 
3470. —Ditto, for Daniells’. .75 to 1.50 
3471. —Ditto, for Grove’s or Smee’s, cast. Per lb., .18 CHEMICALS AND REAGENTS. 
This List comprises the majority of Chemicals I keep, though 
there are a number of strictly commercial articles that usually rank 
under the head of Chemicals, which are omitted, but which I have 
the fullest facilities for shipping at the lowest market rates. 
The prices given are for usual quantities. If large amounts of 
any article herein priced are desired, I should be pleased to give the 
benefit of the lowest market quotations, according to the market 
values at the time. 
I have frequently procured Crude Stock Chemicals, Drugs, and 
other articles for class illustrations in Organic and Applied Chem- 
istry, for my patrons at a distance, and will take pleasure in serving 
them in this manner in the future, charging only a small per centage 
for my time and trouble. 
Standard Test Solutions, according to Fresenius and other au- 
thorities, carefully prepared to order at moderate rates. 
Great attention is paid to neatness, cleanliness and accuracy in 
dispensing reagents. 
Complete collections of the elements made and arranged on de- 
mand ; also suits of the principal spectroscopic salts, neatly put up 
in glass stoppered vials, for either class illustrations or Laboratory 
purposes. 
E. B. BENJAMIN. 182 
E. b. benjamin’s descriptive catalogue 
ABBREVIATED TERMS AND TRADE MARKS, 
USED IN THIS WORK. 
Sol.—Solution ; Precc.=Precipitated; lb.=pound; oz.=ounce; 
dr.=drachm; gr.=grain; grm.=gramme; Mg.=Milligramme; C. 
C.=Centimeter; pt.=pint; qt.=quart; gal.=gallon; Opt.—best, 
next to pure ; pure=next to C. P.; C. P.=Chemicaly pure; U. S. P. 
=United States Pharmacopaeia; Puriss===extra C. P.; T=Tromms- 
dorff’s; M.=Merck’s; Spec.=Specimen; Com’l=Commercial; com. 
=common; Sub.=Sublimed; F. F.=Forte Fortisimo, or very strong; 
F. F. F. F.=Double; Conc.=Concentrated; Fren. or F. T.=Fre- 
senius’ Test; Sp. Grav.=Specific Gravity; Am.=American. 
COMPARATIVE TABLE OF WEIGHTS. 
1 pound Avoirdupois, • = 7000 grains. 
1 ounce “ = 437-j “ 
1 drachm, = GO “ 
28.35 grammes, = 1 ounce Avoirdupois. 
21.01 “ = 1 “ Troy. 
453.60 “ =1 pound Avoirdupois. 
1 Ci = 15.42 grains. 
100 ££ = 3.53 ounces Avoirdupois. 
100 ’ « = 3.02 “ Troy. 
1000 “ , = 1 Kilo 
1 Kilo., = 2 pounds Avoirdupois. PRICE LIST. 
A. 
Acetone, C. P.,...... A, Per oz., $ .30 
Acid, Acetic, IT., S, P., Sp. Gray.,.1047 Per lb., .30 
“ Ditto, strictly C. P,,.Sp..Gray,, 1047 U. S. P., same 
quality as Baufoy’s best Eng Per lb., .60 
“ Ditto, Acetic, Glacial. , ., Per lb., $2.00, Per oz., „ .15 
“ Antimonic, C. P . “ J .25 
“ Arsenic.. Per lb., $1.75 “j .20 
“ Arsenious, C.. P, “ 1.50 / .15 
“ Ditto, Lump. Com!., yery com.... “ .35 P 
Boracie, C. P... « l.OQf .10 
“ Benzoic, . True ,,,, \,, /. “ .80 
“ Ditto, Com, Artificial JL . “■ .40 
“ Butyric, Puriss, Z... “ 
“ Camphoric, True, > Per dr., .50 
“ Chloric.. J... Per oz., 1.50 
“ Carbazotic, Puriss...,, “ .50 
“ Capronic .... ./ Per dr., 1.00 
“ Carbolic, White Cryst..'. Jrer lb., $2.00 Per oz., .25 
“ Ditto, Com’I Colored J “ 1.50 “ .20 
“ Chromic, C. P., Cryst f. “ .50 
“ Cresylic, C, P., Cryst / “ 1.00 
“ Citric, C. P., Cryst ,/•••• Per lb., $2.00 Per oz., .20 
“ Formic, C. P ./. “ .60 
“ Fluoric. See Hydrofluoric Jm 1 oz. and 8 oz. bot- 
tles. / 
“ Gallic, Puriss .X u .50 
“ Gallotannic /....................... <e .75 
“ Hippuric /. Per dr., .60 
“ Ilydriodic .... “ 1.25 
“ Hydrobromic .75 184 
E. b. benjamin’s descriptive catalogue 
Acid, Hydrocyanic, U. S. P Per oz., $ .20 
“ Hydrofluoric, in gutta perclia bottles, with bottle. Per lb., 3.00 
“ Hydrofluosilicic, C. P “ 1.00 
“ Hydrochloric. See Muriatic. 
“ Hypophosphorous, Sol Per oz., .50 
“ Iodic, C. P Per dr., .50 
“ Lactic, C. P., Cone “ .20 
“ Malic “ .50 
“ Margaric, C. P “ .40 
“ Meconic “ 2.00 
Mucic si 2.00 
“ Molybdic, C. P., T Per oz., .95 
“ Muriatic, C. P., in 1 and 6 lb. bottles Per lb., .30 
“ Ditto, Com’l “ .15 
“ Ditto, special price for Carboy. 
“ Nitric, C. P., 1 and 7 lb. bottles “ .40 
“ Ditto, Com’l “ .20 
“ Ditto, Fuming Red. C. P “ 2,50 
“ Ditto, ditto, ditto “ 1.50 
“ Nitrohydrochloric, Pure “ .50 
“ Oxalic, C. P. T., according to quality “ 2.00 
“ Ditto, C. P., Am., very superior “ 1.25 
“ Ditto, Coml “ .40 
“ Oleic, C. P Per oz., 1.00 
“ Phosphoric, U. S. P “ .10 
“ Ditto, Glacial, C. P- T “ .25 
“ Phosphorous, C. P., Sol “ .50 
“ Phenic, Crystals, Pure “ .25 
“ Phosphomobybdic, Sol “ 1.00 
“ Phosphowolframic, Sol “ .60 
“ Pyrogallic, Leviss, C. P. T “ 2.00 
“ Ditto, Alb. Sub. Puriss “ 1.25 
“ Pyroligneous, Refined Per lb., .40 
“ Prussic, “ Scheeles ” Per oz., .50 
“ Salicylic Per dr., 1.00 
“ Pictric, True Per oz., .75 
“ Silicic, Pure Native, Pow’d Per lb., .10 
“ Ditto, C. P., Precc., T Per oz., .50 
“ Succinic, Pure Alb. Cryst “ 1.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
185 
Acid, Stearic, Puriss., for delicate analysis Per dr., $ .50 
“ Ditto, Com Per oz., .10 
“ Suberic Per dr., .10 
“ Sulphuric, C. P., 1 and 9 lb. bottles Per lb., .45 
“ Ditto, Com’l “ .07 
“ Ditto, Nord, in cans and bottles “ .60 
“ Ditto, per Carboy, special price. 
“ Tannic, C. P., Leviss Per oz., .50 
“ Ditto, Pure “ .25 
“ Tartaric, Pure, Cryst....' Pei’ lb., 1.25 
“ Ditto, C. P., for accurate analysis “ 2.00 
“ Ditto, Powdered, Com “ .90 
“ Titannic Per dr., .50 
“ Uric, C. P., Cryst “ .30 
“ Uranic, Com Per oz., 1.35 
“ Valerianic Per dr., 1.25 
“ Vanadinic, C. P Per gr., .15 
“ Wolframic. See Tungstic Acid Per oz., .50 
Alcohol, 95 c. c.; special price large quantity Per gal. 3.00 
“ Absolute “ 1.50 
“ Ammoniated “ .60 
Amylic “ .75 
“ Methylic, nearly inodorous and free from 
Amylic Alcohol. This will be found to be 
an excellent and cheap substitute for Wine 
Alcohol in all heating operations. It pos- 
sesses decidedly greater heating power than 
Wine Alcohol, and is recommended to the 
attention of all chemists and experi- 
menters living where gas cannot be pro- 
cured or used. Per gal., $1.50, by the keg 
orcask “ 1.25 
Albumen, from blood Per dr., .20 
“ “ milk “ .50 
“ “ eggs “ 1.00 
Aldehyde Per oz., .50 
Aluminum, Mett, foil “ 2.50 
“ “ wire “ 3.00 
“ Chloride, C. P “ .50 186 
E. b. benjamin’s descriptive catalogue 
Aluminum, Fluoride. Native; see Minerals Per lb., $ .50 
Alumina, Precc., Puriss., hydrated Per lb., .75 
“ Acetate , “ .30 
“ Bromide. Per oz., .75 
“ Sulphate, Pure Cryst. Leviss.. Per oz., .20 
“ “ and Ammonia, Puriss... Per lb., 1.00 
“ “ “ “ Crude, Com.... “ .10 
“ Ammonia, Cryst. and Pulv “ .10 
Alum, Potassa “ .10 
“ Iron Per oz., .10 
“ Chrome, Chryst., Pure.. “ .10 
“ Ammonia, Ferric Per lb., .75 
Amber, small pieces Per oz., .10 
Ammonia, Aqua, Cone., IT, S. P., 4 lb. bottles Per lb.,, .30 
“ Liquor. F. F. F., 26| per cent, of gas Per lb., .35 
Per oz., .05 
“ Spirits, U. S. P . Per lb., .20 
“ Acetate, Cryst., C. P Per oz., .75 
“ Ditto, Sol., C. P “ .50 
“ Arseniate , “ .30 
“ Benzoate, C. P “ 1.25 
“ Bichromate “ .50 
“ Bromide “ .20 
“ Carbonate, pure Per lb., 1.25 
“ Ditto, Com “ .30 
“ Citrate and Citrate Iron Per oz., .25 
“ Citrate Per lb., 2.60 
“ Gallate, pure Per dr., .50 
“ Hydrosulphide, Liq Per lb., 1.00 
“ Hydrofluorate, Cryst., C. P Per oz., 1.25 
“ Hypophosphite “ .50 
“ Molybdate, C. P., Cryst “ 1.00 
“ Monocarbonate, C. P Per lb., 2.00 
“ Chloride, C. P “ .60 
“ Ditto, Com’l “ .35 
“ Nitrate, Cryst., C. P Per lb., $1.00, Per oz., .10 
« “ fused Am., Pure Per lb., .75 
« Oxalate, C. P., Cryst Per lb., $2.50, Per oz., .20 
“ Phosphate, Cryst., Pure “ .20 OF CHEMICAL AND PHYSICAL APPARATUS. 
187 
Ammonia, Succinate, T., Cryst. 4 Peroz., $1.25 
“ Sulphate,. Com.. , Per lb., .20 
“ .«. C.P......... “ 1.25 
“ Sulphocyanide.-. -. -.......... Per lb., $4.00, Per oz., .30 
“ Urate, C. P...... “ .50 
“ Valerianate “ 1.25 
“ Vanandate.-. Per gr., .30 
Amygdalin 4 ; Per dr., .50 
Amyle, Acetate .Per oz., 1.00 
“ Butyrate ................. “ 1.00 
“ Formate... “ 1.00 
Nitrite, Pure,,,,,,,,........... “ 1.25 
“ Valerianate..,.-.-.-. “ 1.00 
“ Hydrochlorate... ,......................... “ 1.00 
Amalgam, Mercury.............................. Per box, .75 
“ Fusible..................... “ .50 
Antimony, Chloride, Sol. Pei* lb., .50 
“ .“. -Cryst.,- C. P Per oz., .50 
“• Iodide, Cryst., C. P “ .25 
“ Proto Oxide, white, C. P “ .25 
“ Golden Sulphide Per lb., .75 
“ Black “■ Levigated. Per lb., .40, Per oz., .05 
“ Ditto, Native Per lb., .25 
“ Tartrate, Cryst., Pure “ 2.50 
“ Ditto, and Tart Potassa “ 2.00 
“ Mett, Best. .-.- “ .40 
Aniline, Pure, Liq “ 4.00 
“ Sulphate, C. P Per oz., .75 
“ Red........... “ 1.50 
“ Scarlet. 7.... “ 1.25 
« Blue.. “ 2.00 
“ Violet “ 1.60 
« Pink.,., “ 1.25 
“ Green..,...; “ 2.50 
“ Black (( 1.50 
(< Yellow “ 1.00 
(< Orange “ 2.00 
“ Purple “ 2.00 
Animal Charcoal, Gran., Best Per lb., .13 188 
E. b. benjamin’s descriptive catalogue 
Animal Charcoal, Com , Per lb., $ .10 
“ “ Pulv. Fine “ .20 
Arsenic, Native Mett “ 1.00 
“ Pulverized “ 1.25 
“ Bromide Per oz., 1.50 
“ Iodide “ 1.00 
“ Chloride <• 1.75 
Oxide Proto. See Acids. 
“ Sulphide Per Per lb., .50 
“ “ Proto “ .30 
Argols, Crude “ .16 
“ Refined “ .45 
Asparagin, C. P Per dr., 1.00 
Asphaltum, Opt Per lb. .25 
Asbestos, Long Fibre Per oz., .15 
“ Short “ Per lb., .25 
Atropia, Pure Per gr., .12 
“ Sulphate “ .12 
B. 
Barium, Chloride, Com Per lb., .40, Per oz., .05 
“ “ C. P “ .50, “ .10 
“ “ Puriss., T Per lb. 1.00 
“ Fluoride Per oz., 2.00 
“ Mett., Spec Per lb., 1.00 
“ Iodide, C. P Per oz., 1.00 
“ Hyperoxide, C. P., T “ .60 
“ Proto-oxide, “ “ .40 
“ Sulphide “ .10 
Baryta, Acetate “ .20 
“ Caustic, Cryst., C. P Per lb., $2.00, “ .20 
“ Carb., Native Ij*er lb. .25 
“ “ Precc., C. P., T “ 1.50 
“ Chlorate, C. P., T Per oz., .50 
“ Nitrate, Cryst., C- P Per lb., .85 
“ “ Com’l “ .50 
“ Sulphate “ .15 
“ “ Opt., Pure Per oz., .10 OF CHEMICAL AND PHYSICAL APPARATUS. 
189 
Baryta, Water, per fluid oz Per oz., 8 .05 
Beeswax, White “ .10 
“ Yellow Per lb., .40 
Berberine, Pure Per dr., .75 
“ Sulphate “ .60 
Benzoin, Gum Per oz., .10 
Benzole, Genuine Perpt., .75 
Benzine “ .25 
Bismuth,- Mett Per oz., .50 
“ Ammoniocitrate “ 1.50 
“ Mett, Puriss “ 1.00 
“ Acetate, Pure “ .25 
“ Carb “ .50 
“ Chloride “ .50 
“ Oxide, Hydrated “ ,75 
“ Nitrate, Cry st “ .60 
“ Sub. ditto, Powdered “ .40 
“ Tannate “ 1.75 
“ Valerianate, C. P “ 3.00 
Black Flux Per lb., 2.00 
Bone-Ash, Am. (by the bbl., or 50 lbs., or more, spe- 
cial price) “ .35 
“ French “ .40 
“ Washed... “ .50 
Bleaching Powder “ -20 
Borax, Refined “ .60 
“ Glass Per lb., 83.00, Per oz., .25 
“ Pulverized “ .10 
Brazil Wood, True Per lb., .25 
Bromoform, C. P Per oz., 3.00 
Bromine, Pure “ .40 
“ Chloride “ 1.00 
Brucia, C. P Per oz., 86.00, Per dr., .75 
“ Nitrate “ .75 
C. 
Cadmium, Mett, in stick; Pure, T Per oz., .50 
“ “ Ribbon “ .75 
“ Bromide “ .05 190 
E. b. benjamin’s descriptive catalogue 
Cadmium, Carbonate Per oz., $ .75 
“ Chloride “ .75 
“ Iodide “ .75 
“ Sulphide “ 1.00 
“ Oxide “ .75 
“ Sulphate.......... “ .50 
Caffeine, Pure; very superior.. “ 9.00 
“ Citrate ••••,• ....Per dr., .75 
Casein, “ Pure.................. Per oz., .20 
Calcium, Mett, per Spec,. “ 1.00 
“ Acetate, C. P. “ .25 
“ Carb., Precc,; Pure ....... Per lb., .40 
“ Chloride, Fused; C. P., T “ 1.25 
“ “ Grand “ “ 1.00 
“ .... Qryst. “ ................ “ .50 
“ Bromide, Pure Per oz., .75 
“ Iodide.. “ .75 
“ Nitrate, C. P.,_Cryst. “ .15 
“ Fluoride, Pow’d. Per lb., .20 
“ “ Cryst., native selected “ .20 
“ Phosphide, Pure, T Per oz. .75 
“ Phosphate.Per lb., .75, “ .10 
“ Sulphide..,...,,,..,, 'l .10 
Camphor, Best Borneo •* .10 
Carbon, Bisulphide......... Per lb., .60 
“ Trichloride, Liquid Per oz., .50 
Carbo, Animalis Per lb., .13 
Carmine, Opt Per oz., 1.00 
Cerium, Mett, per specimen “ 1.00 
“ Chloride “ 2.50 
“ Nitrate “ 2.25 
“ Oxalate, Pure “ 1.25 
Ceasium, Chloride Per gr., .15 ' 
“ and Rubidium, Chloride “ .15 
Cethyle Per lb., 1.00 
Chameleon, Mineral, Pure Per oz., .12 
Chloral, Hydrate “ .35 
Chlorine, Aqueous Sol. of Per lb., .25 
Charcoal, Willow, Pow’d, Pure “ .35 OF CHEMICAL AND PHYSICAL APPARATUS. 
191 
Charcoal, Willow, Prepared in blocks Each, $.10 
Chloroform, Opt Per lb., $2.00, Per oz., .20 
Chromium, Mett, per specimen. “ 1.00 
Chrome, Alum. See Alums. 
Chromium, Chloride, C. P.,,,,, “ 2.00 
“ Sesqui Chloride,,,.,,,,., “ 2.00 
“ “ Oxide......................... “ .35 
“ Green “ “ 1.25 
“ Carb.....,,,,,, “ 1.00 
Cinnabar. See Minerals, 
Copper, Acetate, C. P., Cryst. “ .50 
“ “ Com., Puly’d. “ .10 
“ Arseniate ‘‘ .50 
“ Arsenite “ .50 
G Ammoniated, C. P., T “ .12 
“ Carbonate, C. P., Precc “ .12 
“ Chloride, C. P., T . “ .20 
“ “ Di. “ “ .25 
“ Chromate...,. ‘r .20 
“ Cyanide, C. P “ 1.00 
“ Formate Pei* dr., .40 
“ Iodide, C. P Per oz., 1.00 
“ Nitrate, Cryst., C. P, T Per lb., $1.50, “ .15 
“ Oxalate “ .25 
“ Oxide, C. P., Gran. Pow’d, T.. Per lb., $2.50, “ .20 
“ “ Pure, Pow’d, “ 2.00, “ .20 
“ Reduced Puriss, Pow’d “ .40 
“ Mett, Pure Gran Per lb., $1.25 “ .15 
“ “ Thin Foil, Pure “ .75 “ .10 
“ Sheet “ .50 “ .05 
“ Scraps “ .40 “ .05 
“ Turnings “ .40 “ .05 
“ Sulphate, O, P., T “ .50 “ .10 
“ “ Com’l 11 .20 “ .05 
“ Ammoniated “ .15 
“ Sulphide “ .10 
Cobalt, Acetate, C. P “ 1.00 
“ Mett, Cubes “ 1.25 
“ “ C. P., T “ 2.50 192 
E. b. benjamin’s descriptive catalogue 
Cobalt, Chloride, C. P., T Per oz., $1.00 
“ Carb., C. P., T “ 1.00 
“ Nitrate, C. P., T “ 1.00 
“ “ C. P., Sol. F. T “ .25 
“ Oxalate, C. P., T “ 1.25 
“ Oxide, C. P “ 1.00 
“ “ Com’l “ .12 
Codeia, Pure Per gr., .08 
Collodion, E. Sol Per oz., .20 
“ Cotton. Best Pavys’ “ .75 
Conine, Pure German Per dr., 1.50 
Cream Tartar, Pow’d Per lb., .60 
Creasote, White Per oz., .25 
Crocus-Martis, Per lb., .60 “ .05 
Cryolite, Best. Sec also Minerals.. .Per lb., .25 to .50 
D. 
Dextrine, Opt., Pow’d Per lb., .30 
Distilled Water Per gal., .20 
Dutch Leaf Per book, .10 
Didymium, Chloride Per specimen, 1.00 
E. 
Ether, Sulphuric, Lot, .60.... Per lb., 90 
“ “ Veritable, Cone “ 1.00 
“ Acetic, Pure Cone Per oz., .15 
“ Butyric “ .50 
“ Chloric “ .20 
“ Formic “ .50 
“ Nitric, Spirits of Per lb., .75 
“ Oneanthic, Pure Per oz., 1.00 
Emery, Flour Per lb., .25 
“ Pow’d “ .20 
F. 
Fehling’s Sol., for physicians’ and sugar-house use, 
indicating percentage of grape sugar Per oz., .20 
Felspar, Pow’d, White Per lb., .25 
“ Native, Cryst “ .10 OF CHEMICAL AND PHYSICAL APPARATUS. 
193 
Fire Clay, Fine Per lb., 8 .60 
Fluor Spar, Cryst “ . .15 
“ « Pow’d “ .20 
Formyle, Chloride Per oz., 2.50 
“ Bromide _ “ 3.00 
“ Iodide Per dr., .75 
Fusible Metal Per oz., .40 
Fusel Oil, Pure Per lb., .75 
Fruit Essences, Artificial; all varieties kept. 
G* 
Galena, Fine, for Blow-pipe work “ .30 
Galls, Ground Per oz., .10 
“ Tincture of “ .15 
Glass of Borax “ 20 
Glucina, Carbonate. Per dr, 1.50 
“ Hydrate< “ 1.50 
Glucose, in lumps — , Per lb., .50 
Glycerine, Puriss.; water free, T....r “ 1.00 
“ Best American; very fine; free from lead 
and all earthy matters “ .60 
Gum, Arabic, picks... “ .90 
“ “ sorts “ .60' 
Benzoin . .Peroz,, .10* 
“ Tragarcanth “ .10) 
Gums, of all kinds, at lowest market rates. 
Gold, Chloride, Sol • “ 2.00 
“ Ditto, Dry, Pure, 15 gr. bottles “ 1.50 
“ Oxide Per. gr., .10 
“ Metallic Leaf, xx Deep, Per book, .75 
Graphite, Pow’d Per lb, .20 
“ In Lump « .25 
GuttaPercha. Pure. In Sticks Per oz, 1.00 
Gypsum, Pulv Per lb, .10 
Gelatine, Pure Per oz, .10 
H. 
Haematoxyline Per. gr, .10 194 
E. B. benjamin’s descriptive catalogue 
I. 
Indigo, Pure, Best Bengal Per oz., $.15 
“ Sulphate Sol “ .10 
Iodine, Pure, Resublimed, T “ .75 
“ Crude “ .50 
Iridium, Mett Per specimen, 1.00 
“ Chloride Per gr., .03 
Iridosmium; “ .03 
Indium, Mett Per specimen, Per lb., 1.00 
Iron, by Hydrogen, Pure. Per oz., .35 
“ Pulv., Sub., Pure “ .10 
“ Wire, Pure “ .25 
“ Acetate “ .10 
“ Ammoniated “ .10 
“ Limatura, Alcoholized Per lb., .50, “ .10 
“ Arseniate “ .60 
“ Bromide “ 1.00 
“ Carbonate, Precc Per lb., .40, “ .10 
“ “ Proto, Precc “ .10 
“ Chloride, Sesqui, Sol Per lb., .60, “ .10 
“ “ “ Fine Cryst., C. P.. “ $3.00, “ .25 
“ “ Proto “ .75, “ .10 
“ Chromate, Native Per lb., .25 
“ Citrate, U. S. P Per oz., .20 
“ “ and Ammonia “ .20 
“ “ and Manganese “ .25 
“ “ and Magnesia “ .25 
“ Ferrocyanide, Pure “ .20 
“ “ Com “ .10 
“ Filings Per lb., 10. 
“ Iodide, C. P Per oz., 1.00 
“ “ Com . “ .75 
“ Lactate, Pure “ .30 
“ Oxide, Hydrated Peroxide Per lb., 1.00 
“ “ Proto Per oz., .10 
“ “ Red Oxide, Precc Per lb., .20 
“ “ Black Oxide, C. P Per oz., .15 
« « « Com’l Per lb., .75, “ .10 OF CHEMICAL AND PHYSICAL APPARATUS. 
195 
Iron, Nitrate, Per. Sol Per lb., $1.00, Per oz., 8 .10 
“ Phosphate, Proto “ 1.00, “ .10 
“ Per « 1.25, “ .12 
“ Pyrophosphate, in Plates “ .25 
“ Sulphate, C. P., Cryst Per lb., .15 
“ “ Dried “ .35 
“ “ and Ammonia, C. P “ .30 
“ “ and Potassa Per lb., .90, Per oz., .10 
“ “ Sub., Pure “ .20 
“ Sulphide, Fused, Opt Per lb., .30 
“ “ Gran “ .35 
“ Tannate, Pure Per oz., .60 
“ Tartrate “ .50 
“ “ and Ammonia “ .20 
“ Tersulphate, Sol., Opt. Per lb., 1.00 
“ “ and Potassa Per oz., .20 
“ Tungstate Per lb., .60 
“ Valerianate Per oz., 1.00 
J. 
J alapine, Per dr., .50 
K. 
Kermes, Mineral Per lb., 2.50 
Kaolin, Pure, White “ .20 
Kreatine Per specimen, 1.00 
L. 
Lead, Acetate, C. P., T Per lb., 1.00 
“ “ Com’l “ .50 
“ “ Tribasic Per oz., .40 
“ “ Sub., Sol Per lb., .40 
“ Bichromate, Pure Per oz., .20 
“ Carb., Neutral Per lb., .60 
“ “ Native. See Minerals. 
“ Chloride, C. P Per oz., .10 
“ Chromate, for Organic Analysis “ '20 
“ Hyposulphite “ .15 
“ Iodide ' “ .60 196 
E. B. benjamin’s descriptive catalogue 
Lead, Mett, C. P., in drops, for Assay purposes Per lb., 8 .75 
“ Nitrate, Pure .40 
“ Oxide, Red “ .30 
“ “ Proto, Pure “ .18 
“ <• Per oz.. .20 
“ Phosphate, Pure “ .30 
“ Sulphate, C. P Per lb., .60 
“ Tartrate, Pure Per oz., .20 
“ Tannate “ .40 
Lithia, Carbonate, C. P “ 2.00 
“ Citrate Per dr., 1.00 
. “ Sulphate “ .50 
Lime, Chloride, Com’l Per lb., .20 
Lithium, “ C. P Per dr., .50 
“ Bromide Per oz., 3.00 
“ Iodide “ 3.25 
Litmus. In Cubes, Pure “ .10 
“ Paper, Blue and Red Per sheet, .05 
Logwood. In Chips . Per lb., .10 
“ Extract Per oz., .10 
“ In Billets Per billet, .50 
Lupiline Per oz., .20 
Lycopodium “ .20 
M. 
Magnesia, Caustic Per lb., 2.00 
“ Carbonate, Precc Per oz., .10 
“ Native. See Minerals. 
“ Citrate, Pure Per lb., .20 
“ Nitrate Per oz., .12 
“ Hypophosphite “ 1.25 
“ Phosphate “ .25 
“ Sulphate, C. P Per lb., .25 
“ Valerianate Per dr., .30 
“ Sulphate, Com’l Per lb., .10 
“ Sulphite Per oz., .15 
M agneslum, Ribbon Per foot, .06, “ 3.25 
“ Wire “ .06, “ 3.00 
“ Bromide “ 1.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
197 
Magnesium, Iodide Per oz., $1.00 
“ Chloride, C. P Per lb., 1.00 
Manganese, Mett Per specimen, 1.00 
“ Acetate Per oz., .40 
“ Bromide “ 2.25 
“ Carbonate “ .30 
“ Citrate “ .60 
“ Per Oxide; high test; Pulv Pei* lb., .12 
“ Chloride, Pure Per oz., .40 
“ Hypophosphite “ 1.00 
“ Iodide “ 1.50 
“ Phosphate “ .60 
“ Nitrate “ .50 
“ Sulphate, C. P., Cryst Per lb., $2.50 “ .30 
Mannite “ .50 
Meconin Per dr., 1.50 
Morphia, Pure Alkaloid Price, per | oz., 2.00 
“ Bimeconate “ “ 2.75 
“ Chloride “ “ 1.50 
“ Nitrate “ “ 2.00 
“ Sulphate “ “ 1.50 
“ Valerianate “ ' 11 1.50 
Mosaic, Gold Per oz., .25 
Mercury, Redistilled, Best, Per lb., 1.25 
“ “ in quantities, special price. 
“ Acetate Per oz., .60 
Bromide “ 1.00 
“ Chloride, Proto 11 .15 
“ “ Per Am “ .10 
“ Cyandide, T 11 .20 
“ Chloride, C. P. T., Per “ .15 
“ Iodide, Proto li .75 
“ “ “ Deuto “ .75 
“ Oxide, Black “ .40 
“ “ Proto, Red “ .15 
“ “ Yellow “ .25 
“ Sulphide, Black “ .10 
“ “ Red “ .20 
“ Sulphocyanide “ .40 198 
E. b. benjamin’s descriptive catalogue 
Mercury, Sulphate, Basic Per oz., $ .20 
“ “ Neutral “ .25 
“ Nitrate, Proto, T “ .20 
“ Per, T « .35 
Methyline Per lb., 1.00 
Minium, Opt “ .25 
Microcosmic Salt, Pure Per lb., $2.25, Per oz., .15 
Molybdenum, Mett Per specimen, Per lb., 1.00 
“ Oxide, C. P Per oz., .75 
“ Sulphide “ .75 
Menisperin, Pure 2.50 
N. 
Naptha, Refined Per lb., .50 
“ Wood “ 1.00 
Naplialine, Pure, T Per lb., $3.00, “ .25 
N arceia Per gr., .25 
Narcotine, C. P Per |oz., .50 
Nessler’s Solution, for delicate Ammonia reactions, 
Per fluid oz., .25 
Nickel, Mett, Cubes Per oz., .40 
“ Carb, Pure “ .75 
“ Chloride, T “ 1.00 
“ Nitrate, C. P. T “ 1.00 
“ Oxalate, “ “ 1.00 
“ Oxide/ “ .75 
“ Sulphate, C. P “ 1.00 
“ “ and Ammonia “ 1.00 
Nicotine Per gr., .10 
Nitrobenzol * Per oz., .10 
O. 
Ores and Minerals. See Minerals and Fossils. 
Osmium, Mett Per specimen, 1.00 
Olive Oil, True Perpt., 1.00 
Oils, Essential; all varieties kept; True 
“ Fixed; “ “ OF CHEMICAL AND PHYSICAL APPARATUS. 
199 
P. 
Palladium, Mett Per specimen, $1.00 
•'* Chloride, 1 dr. bottles Per lb., 10.00 
Paraftne, Opt., Pearl “ .60 
Phosphorus. In Sticks Per lb., $2.00, Per oz., .25 
“ Amorphous “ .40 
“ Chloride Per dr., .75 
Pancreatine “ 1-00 
Picrotoxine, Pure Per | oz., .50 
Pyroxilic Spirit, Pure Per qt., .50 
Piperine Per oz., 1.50 
Pepsine, Best, Refined Per dr., 1.00 
Phloridizlne “ 1.00 
Platinum, Chloride, Sol Per oz., 1.25 
“ “ Dry, T . “ 10.00 
“ “ and Sodium Per dr., 1.50 
“ Sponge Per gr., .03 
“ “ for Hydroplatinic Lamp Each, .50 
“ Wire Per gr., .2| 
“ Sheet “ .2| 
“ Plate *... “ .03 
Potassa, Acetate, Pure Per oz., .10 
“ Antimoniate “ .30 
“ Arseniate “ .20 
“ Arsenite “ .20 
“ Bicarbonate, C. P Per lb., .50 
“ “ Com’l “ .10 
“ Bichromate “ .40 
“ “ Puriss Per oz., .10 
“ Binoxalate “ .10 
“ Boro-Tartrate “ .10 
“ Bisulphate, C. P Per lb., 1.00 
“ Bitartrate, Cryst “ .60 
“ “ Puriss., T “ 1.25 
“ “ Pow’d “ .60 
“ Bromide Per oz., .18 
“ Carbonate, C. P., Sicc Per lb., 2.00 
“ “ Com Per lb., .25 to .40 200 
E. b. benjamin’s descriptive catalogue 
Potassa, Carbonate and Carb. Soda, C. P Per lb., $2.00 
“ Caustic, Fused, White, C. P. T “ 2.00 
“ “ “ Brown “ .60 
“ “ “ C. P., Am “ .85 
“ “ “ Dep. Alcohol, Puriss “ 2.50 
“ Chlorate, Cryst., Best “ .70 
“ “ Puriss “ .75 
“ Chromate, Pure.... Per lb., $2.00.Per oz., .15 
“ “ Com Per lb., 1.00 
“ Citrate Per lb., $1.50.Per oz., .12 
“ Cyanide, Fused, Alb., Opt “ 1.00. “ .10 
“ “ “ “ In 10 lb. cans Per lb., .85 
“ “ “ “ C. P. T., Per lb., $1.50, Pei- oz., .12 
“ Chloride, C. P., T “ .75 “ .10 
“ Ferrocyanide, Pure “ .75 “ .15 
“ Ferridcyanide “ “ $1.00 “ .10 
“ Fluoride, C. P., T “ 1.25 
“ Hypochlorate “ .50 
“ Hypophosphite “ .50 
“ Iodide, Pure Cryst(variable price) per lb. $6.50 “ .50 
“ “ Fused Puriss, T “ .75 
“ Iodate “ 1.00 
“ Ilypermanganate Per lb., $3.30 “ .40 
“ Manganate “ 1.00 “ .40 
“ Lactate “ 1.25 
“ Liquor Per lb., .40 “ .10 
“ Nitrate Cryst Per lb., .35 
“ “ C. P., Grau “ .60 
“ Phosphate, Pure “ 3.50 
“ Nitrite, Pure, T Per oz., .40 
“ Oxalate “ .25 
“ “ Bin “ .10 
“ Pictrate, very scarce “ 2.50 
“ Silicate, Sol., C. P., T “ .20 
« « pry “ “ “ ,25 
“ Sulphate, Cryst., Pure Per lb., .25 
“ “ Pulv “ -28 
“ Sulphite, Cryst Per oz., .10 
“ Sulphide, Fused Per lb., .50, “ .10 OF CHEMICAL AND PHYSICAL APPARATUS. 
201 
Potassa, Tartrate, Cryst Peroz., $ .10 
Potassium. In |oz. vials.. Per oz., S5.00, Per |oz., 1.50 
“ Sulphocyanide Per oz., .50 
Propylamin, Pure Per |oz., .50 
“ Chloride “ 1.00 
Proteine Per oz., 5.00 
Prussian Blue “ .10 
Q- 
Quinia, Pure Per | oz., .75 
“ Acetate Per oz., 4.50 
“ Arseniate “ 8.00 
“ Chloride Per dr., .75 
“ Sulphate Per oz., $3.25, “ .45 
R. 
Rare Resinoids—Podophyllin, Leptandrin, Cimicifu- 
gin, Macrotin, Alnuine, Ampelopsine, Apocynin, 
Asclepidin, Baptisin, Barosmin, Caulophyll, Ce- 
rasine, Chelonine, Colocynthine, Cornine, Coryda- 
lia, Cypripedine, Digitalin, Dioscorein, Eryngine, 
Euonymine, Eupatoidin, Eupatorine, Eupurpurin, 
Fragerin, Gelseminine, Geranine, Hamamelin, He- 
lonin, Humulin, Hydrastine, Hydrastin, Hydrastia 
Mur., Hydrastia Snip., Hyoscyamine, Irisin, Ja- 
lapin, Juglandin, Lobelin, Menispermin, Myricin, 
Panduratin, Phytolacin, Populin, Prunine, Rhusin, 
Rumicin, Sanguinarina, Sanguinarina Sulph., Scu- 
telarine, Senecionine, Stillingine, Trillin, Veratrin, 
Verbenine, Viburnin, Xanthoxylin. 
Rheine, Tilden’s Per oz., 6.00 
Rhodium, Mett Per specimen, 1.00 
Rubidium, Chloride Per gr., .10 
Rhigoline, Inoderous; Sp. Grav. 620 Per both, .75 
Ruthenium, Mett Per specimen, 1.00 
S. 
Salicine “ Per oz., 1.00 
Sanguine, Best Fr Per lb., 1.00 202 
E. b. benjamin’s descriptive catalogue. 
Selenium Per specimen, $1.00 
Silicium “ “ 1.00 
Santonin, Pure, Alkaloid .Per oz., 1.50 
Silica, Fine ground Per lb., .10 
Silver, Mett Foil Per oz., 2.00 
“ Gran., Pure “ 4.00 
‘ Leaf, " Per book, .25 
“ Acetate, Pure Per oz., 3.50 
“ Bromide “ 3.00 
“ Chloride “ 2.00 
“ Cyanide “ 3.00 
“ Carbonate Per £ oz., .50 
“ Iodide, Pure Per oz., 3.50 
“ Nitrate, C. P., Cryst ‘‘ 1.25 
“ Oxide “ 2.25 
“ Sulphate, Pure “ 3.50 
Soda, Acetate Per lb., 1.00 
“ Arseniate Per oz., .30 
“ Arsenite “ .15 
“ Bicarbonate, Eng., Best Per lb., .10 
“ “ C. P “ .75 
“ Bromide Per oz., .50 
“ Bromide, C. P Per lb., .50 
“ Biborate, Puriss “ .75 
“ Bisulphate, Pure “ 1.00 
“ Bisulphite, C. P “ 2.00 
“ Carbonate, Cryst., C. P., T “ .50 
“ “ Dried, Puriss., T “ 1.25 
“ “ Cryst., Com “ .06 
“ Caustic, White, by Lime, Fused “ .75 
“ “ Alcohol, Dep., C. P., T “ 1.50 
“ by Sodium Per lb., $15.00, Per oz., 1.25 
“ Chlorate, Cryst “ .25 
“ Chloride, Sol., U. S. P Per bottle, .20 
“ “ Dried, C. P Per lb., 1.00 
“ Citrate, Pure “ 1.50 
“ Fluoride Per oz., 1.25 
“ Iodide, Pure, Cryst “ .75 
“ Hyposulphite, C. P., T Per lb., 1.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
203 
Soda, Hyposulphite, Am., Opt Per lb., $ .12 
“ Hypermanganate, C. P Per oz., .10 
“ Hydrosulphite Per lb., 1.50 
“ Hypophosphite Per oz., .40 
“ Iodate “ .65 
“ Lactate, Sol., Cone “ 1.00 
“ Phosphate, Cryst., C. P Per lb., 1.00 
“ Pyrophosphate “ 1.50 
“ Nitrate, Cryst, C. P “ .40 
“ “ “ Refined “ .25 
“ Pyrophosphate Per oz., .20 
“ Sulphite Per lb., .50 
“ Santonate Per oz., 2.00 
“ Sulphocarbolate “ .40 
“ Silicate, Sol., 3 lb. bottles Each, .90 
“ Sulphate, Com’l Per lb., .06 
“ “ Pure “ .40 
“ Tungstate Per oz., .25 
Sodium, Mett “ 1.00 
“ Bromide “ .50 
“ Nitroprusside Per dr., .50 
“ Sulphide, Fused Per lb., .50 
“ “ Cryst 1.25 
“ “ C. P “ 1.50 
Solanine Per gr., .20 
Spermacett, Pure Per lb., .60 
Spirits, Ammonia, U. S. P “ .20 
Strontium, Mett Per specimen, 1.00 
Strontia, Carbonate, Precc Per oz., .10 
“ Caustic “ .50 
“ Chloride, C. P., T Per lb., $1.00, “ .10 
“ Nitrate, Dried Per lb., .50 
<• “ Cryst ' “ .40 
“ Sulphate. See Minerals. 
“ “ C. P Per lb., 1.00 
Strontianite. 
Strychnia, Cryst., Pure Per-J oz., .75 
“ Acetate “ .75 
“ Chloride “ .75 204 
E. b. benjamin’s descriptive catalogue 
Sulphur, Flos Per lb., $ .15 
“ Roll “ .10 
“ Chloride Per oz., .25 
“ Iodide “ .75 
“ Precc., Pure Per lb., .50 
T. 
Tellurium, Mett Per specimen, 1.00 
Thebaine, Pure Per gr., .50 
Theine, Pure, Alkaloid Per dr., 3.00 
Thallium Per specimen, .50 
“ Chloride Per gr., 10 
Thymol Peroz., 2.50 
Test Paper, Litmus, Blue Per sheet, .05, Per quire, .80 
“ “ Red “ .05, “ .80 
“ “ Neutral “ .05, “ .08 
“ Brazil Wood “ .05, “ .08 
“ Georgina “ .06, “ 1.00 
“ Guaicum “ .06, “ 1.25 
“ Turmeric “ .05, “ .80 
“ Sulphate, Manganese... “ .05, “ .80 
“ Schonbein’s Ozone Perpack, .10 
“ Hydrosulphuric Acid. .Per sheet, .05, Per quire, .75 
Till, Mett., in bars Per lb., .50 
“ « Pure, in sticks “ .75 
“ Foil, Tissue “ .75 
“ Mett., Granulated “ 1.00 
“ Chloride, Pure, proto “ 1.00 
“ “ “ Liquid, non Aqueous "..Peroz., .50 
“ “ Crystals, Opt., T.' Per lb., 1.50 
“ 11 “ Com’l “ ' .50 
“ Oxide, Pure, T “ 2.00 
“ Bisulphide • Peroz., .65 
“ Sulphide, Proto “ .15 
Tungsten, Mett Per specimen, .50 
“ Oxide Per oz., 1.25 
Turmeric, Pow’d “ .10 
Toluol. OF CHEMICAL AND PHYSICAL APPARATUS. 
205 
u. 
Uranium, Acetate, Pure, C. P Per oz. $1.50 
“ Chloride “ “ 1.25 
“ Nitrate “ .25 
“ Sulphate Per dr., 1.25 
Oxide Per oz., 1.25 
Urea, Cryst., Pure “ 2.50 
“ Nitrate “ 3.00 
v? 
Vermillion X “ .15 
z- 
Zinc, Mett / 
“ « Puriss, Gran’l, T.... > lb., .50 
“ Acetate, Cryst., C. P Per lb., Per oz., .15 
“ Gran’l, Com’l Perlb„ .25 
“ “ C. P., Arsenic, Free .... “ .75 
“ “ Bromide £ Per oz., 1.00 
“ Reduced, C. P., Puriss /. Per lb., 1.25 
“ Chloride, Dry, Opt / Per oz., .15 
“ Carbonate, Pure, Precc .j£er lb., .75, Per oz., .10 
e£ Cyanide /. " .40 
“ Ferrocyanide /. “ .40 
“ Hypophosphite ./ “ 1.50 
“ Iodide J................ 
“ Lactate ./. “ .75 
“ Nitrate, Pure /. “ .40 
“ Oxide, Precc / Per lb., .75 
Phosphate ...../. “ .75 
“ Phosphide /. Per oz., 2.00 
“ Sulphate, Com’l Z Per lb., .10 
“ “ Puriss., T- • Z “ -50 
“ Valerianate •./ Per oz., 1.50 
Zirconium, Oxide, Pure/ Per dr., .50 
Zircons, Native. See Minerals. MINERALOGICAL 
AND 
GEOLOGICAL DEPARTMENTS. 
During the past year, I have organized and incorporated into 
this establishment a Mineralogical and Geological department. My 
aim and desire is to furnish to those requiring them, characteristic, 
and, at the same time, Good Cabinet Specimens, for lecture and other 
purposes, at moderate prices ; also, the usual sets and series for Stu- 
dents’ use, Blow-pipe purposes, etc. Each specimen, without regard 
to size or price, will be distinctly labeled with full name and local- 
ity. Dana will be followed in all instances. 
MINERALS. 
3473. —A Complete Set of Minerals, with pasteboard trays 
for placing them in, each specimen being perfectly characteristic and 
illustrating all the ordinary crystalized forms in which they occur. 
In all, 200 specimens; size about 2| x 2| inches. This series will be 
found to be very suitable for academies, seminaries, the smaller col- 
leges, etc. $50.00 
3474. A Collection similar to the above, but more complete, 
containing 300 specimens, 2| x 2| inches, neatly and securely packed 
in wooden boxes; each mineral being numbered, with catalogue oi 
same. This collection is put up and selected by a practical and 
experienced mineralogist, and will be found quite complete. 
Packed, $75.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
207 
COLLECTION OF THE PRINCIPAL ORES OF THE METALS. 
Aluminum—Cryolite, Alunite, 
Kaolin. 
Arsenic—Arsenical Iron. 
Bismuth—Carbonate Bismuth, 
Native Mett. 
Chromium—Chromate of Iron 
Cobalt—Zaffire. 
Columbium—Columbite. 
Copper — Sulphide, Malachite, 
Native. 
Glucinum—Beryl. 
Iron—Magnetic Oxide Haematite. 
Lithium—Spodumene and Le- 
pidolite. 
Lead—Galena. 
Manganese—Pyrolusite. 
Mercury—Cinnabar. 
Molybdenum—Molybdanite. 
Nickel—Nicoliferous Pyrites. 
Osmium—Iridosmine. 
Platinum—Native Grains. 
Silver—Horn Silver. 
Tin—Stream Tin, Sulph. Tin. 
Titanium—Sphene, Rutile. 
Tungsten—Tungstate Iron. 
Yttria—Y ttro tan talite. 
Zirconium—Zircons. 
Zinc — Calamine, Blende. 
Price of this collection, 815.00 to 25.00 
3475. —Set of 100 Minerals, of the most commonly occurring 
forms, neatly packed in pasteboard trays, etc. 815.00 
3476. —Collection of Chemical substances, for beginners in 
Blow-piping, put up in tightly corked and correctly marked Homeo- 
pathic vials, of two drachms capacity, all C. P. Recommended by 
Kobel. About 50 in all, 87.00; about 25, $3.50 
This includes a specimen of all the ordinary metals in a pure 
state for experimental reduction with Blow-pipe. 
3477. —Blow-pipe Reagent Cases, for prospectors, mineral- 
ogists, travelers, etc.; consisting of Berzelius’s Blow-pipe, with Plati- 
num tip, Platina wire and foil, pair Pincettes, and ten of the most use- 
ful dry Blow-pipe Beagents, as follows: Borax, Boracic Acid, Oxide, 
Copper, Carbonate Soda, Microcosmic Salt, Fluoride Calcium, Sul- 
phate Lime, Silicic Acid, and pure Tin. All complete, in an elegant 
polished mahogany case. 87.00 
3478. —The same, with the addition of one Agate Mortar, one 
Mineral Hammer, one Anvil, three pieces of Charcoal, six glass Tubes 
right size for making Blow-pipe Flasks, three glass Stirrers,—heavy 
glass Spirit Lamp, and four glass stoppered bottles filled with Hy- 
drocloric, Nitric, Sulphuric Acids, and Cobalt solution. 812.50 
3479. —Ditto, ditto, ditto, with Plattner’s Blow-pipe Lamp in- 
stead of Spirit Lamp. 83.00 extra. 208 
e. b. benjamin’s descriptive catalogue 
3480.—A Collection of minerals of most excellent size, and of a 
character suitable for placing on the shelves of the College Cabinet, 
at the uniform price of 50 cents per specimen, averaging about 3x3 
inches in size. These minerals were collected by a well known 
mineralogist of this city, and each specimen is a perfect example of 
its kind. They are not completely classified, and, therefore, I will 
sell them singly at an extremely low figure. Some of these, for 
example, Kyanite, Tourmaline, Zinc Ores, etc., are really deserving of 
very much higher prices. The greater part of this collection is 
from American localities. 
Agate, 
Allanite, 
Analcine, 
Apatite, 
Asbestos, 
Augite, 
Azurite, 
Asphaltum, 
Arragonite, 
Augite, Pyoxene and 
Scapolite, 
Amygdaloid, 
Alunite, 
Actinolite, 
Anhydrite, 
Anthropolite, 
Barite, 
Bismuth, Mett. 
Beryl, 
Blende, 
Brucite, 
Calamine, 
Calcite, Ferruginous, 
“ Cryst., 
“ Massive, 
“ Granular, 
Cassiterite, 
Celestine, 
Cerite, 
Chalcedony, 
Chalcopyrites, with 
Epidote, 
Chlorite, 
Calcified Wood, 
Cinnabar, 
Clay, Concretions, 
Clintonite, 
Coccolite, 
Columbite, 
Copper, Native, 
Copper, Native, with 
Epidote, 
Cryolite, 
“ with Spathic Iron, 
Copper, Native, with 
Epidote and Ortho- 
clase, 
Chondrodite in Cal- 
cite, 
Chlorophane, 
Chalcocite, 
Dolomite, 
Dioptase, 
Diallage, 
Datolite, 
Emery, 
Epidote, 
Ekelbergite, 
Felspar, 
Fluorite, 
Flint, 
Franklinite, 
Flos. Ferri, 
Float Stone 
Galenite, 
Garnets, Massive, 
“ Rhomboidal, 
“ Precious, 
Gibbsite, 
Graph.ite, Massive, 
“ Cryst, 
Gypsum, Massive, 
“ Cryst., 
Halite, 
Heavy Spar, 
“ “ with Iron 
Pyrites, etc., 
Haematite, 
Heulandite, 
Hornblende, Massive, 
“ Cryst., 
Hornstone, 
Hypersthene, 
Hyacinth, 
Idocrase, 
Ilmenite, 
Iron Specular, OF CHEMICAL AND PHYSICAL APPARATUS. 
209 
Iron, Magnetic, 
“ Pyrites, 
Jasper, 
Jaspery Trap, 
Jeffersonite, 
Kaolinite, 
Kyanite, 
Labradorite, 
Lepidolite, 
Lignite, 
Limonite, 
Magnetite Cryst., 
“ Massive,. 
Malachite, 
Marmolite, 
Margarodite, 
Mica, with green 
Tourmaline. 
Mispickle. 
Molybdenite, 
Moscovite, 
Natron, 
Obsidian, 
Olivine, 
Opal, Common, 
“ Wood, 
“ Fine, 
Orthoclase, 
Orpiment, 
Pargasite, 
Porphyry, 
Pearl. Spar, 
Pectolite, 
Petalite, 
Plumbago,. 
Prase. 
Prehnite, 
Pyrites, Iron, 
££ Copper, 
“ Magnetic,. 
Pyrolusite, 
Pyoxene, 
Pyrrhotite, 
Quartz, Crystal,. 
“ Rose, 
“ Smoky, 
“ Geodes, 
Realgar, 
Rock Crystal, 
Scapolite, 
Stibnite, 
Selenite, 
Seyberite, 
Schefeldite, 
Smoky Quartz, 
Sepentine, 
Silicified Wood, 
Sillicious Sinter, 
Stilbite, 
Spodumene, 
Sulphur, 
11 with. Celestine, 
Strontianite, 
Sphene, 
Spinels, pink and 
Chondrodite, 
Pargasite, etc., 
Spinels, Black, 
Spathic, Iron, 
Steatite, 
Syenite, 
Sunstone, 
Staurotide, 
Tabular Spar, 
Talc, 
Titaniferous, Iron, 
Topaz, 
Tourmaline, Massi fe, 
“ Cryst., 
“ Green, 
Tremolite, 
Wad, 
Willemite, 
Witherite, 
W olframite, 
Wood, Petrified, 
“ Opal, 
Zinc, Blende, 
Zincite, 
Zircons. 
3481.—A Set of for illustrating the various shades 
assumed by minerals when generally in crystaline state: 
1. Carrara Marble, White. 
2. Calcites, “ 
3. Quartz, Gray. 
4. Talc, “ 
5. Obsidian, Blade. 
6. Pyroxene “ 
7. Azurite, Blue. 
8. Fluor Spar, “ 
9. Dioptase, Green. 
10. Actinolite, “ 
11. Sulphur, Native, Yellow. 
12. Common Opal, “ 
13. Jasper, Red. 
14. Lepidolite, ££ 
15. Agatized Wood Brown. 
16. Mountain “ “ 
Complete, in case, $10.00 210 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
3482.—A Collection of substances well suited to illustrate 
the principal Blow-pipe Reactions, neatly put up in well corked vials 
or specimen tubes of uniform size. Very complete. §25.00 
Carb, Soda, 
Borax, 
Micro, Salt, 
Bisulph., Potassa, 
Boracic Acid, 
Fluor Spar, 
Nitrate Cobalt, 
Oxalate Nickel, 
Oxide Copper, 
Chloride, Silver, 
Lead, 
Iron, 
Tin, 
Bone-Ash, 
Chloride, Potassium, 
Bromide, “ 
Iodide, “ 
-Chloride, Sodium, 
“ Ammonium, 
Subchl’de, Mercury, 
Protochloride, “ 
Antimony, 
Arsenic, 
Bismuth, 
Cadmium, 
Silver, 
Alloy, Mercury and 
Tin, 
Alloy, Lead and An- 
timony, 
Alloy, Lead and Bis- 
muth, 
Alloy, Lead and Zinc, 
“ Tin and Copper, 
Alloy, Zinc and Cad- 
mium, 
Zinc, 
Rock, Crystal, 
‘Gypsum, 
Calc., Spar, 
Strontianite 
Witherite, 
Magnesite, 
Mica, 
Felspar, 
Albite, 
Sulphides, Ou., Sb., 
and Pb. 
Sulphides, Arsenic, 
.and Antimony, 
Onofrite, or Claus- 
thalite, 
Chlorate, Potassa, 
Alumina, 
Sulphate, Copper, 
Nitrate, Lead, 
Oxide, Antimony, 
Arsenious Acid, 
Ox., Bismuth, 
Ox., Cadmium, 
Sesquichloride Chro- 
mium, 
Ox., Cobalt, 
Proto-oxide, Mercury, 
Molybdic Acid, 
Oxide, Silver, 
Binoxide, Tin, 
Tungstic Acid, 
Sesqui chloride Ura- 
nium, 
Oxide, Zinc, 
Chloride, Copper, 
Arsenite, “ 
Petalite, 
Haematite, 
Rutile, 
Pyrolusite, 
Lepidolite, 
Apatite, 
Franklinite, 
Pitchblende, 
Chromic Iron, 
Cerusite, 
Malachite, 
Gray Antimony, 
Iron Pyrites, 
Copper “ 
Mispickel, 
Smaltine, 
Cobaltine, 
Realgar, 
Cinnabar, 
Copper Nickel, 
Molybdenite, 
Berthierite, 
Tetrahedrite. 
3483.—A Set for illustrating the various temperatures of fusi- 
bleness of various minerals, according to Elderhorst. In case, §1.00 
1. Gray Antimony, 
2. Natrolite, 
3. Almandine, or Iron Garnet, 
4. Actinolite, 
5. Orthoclase 
G. Broncite. OF CHEMICAL AND PHYSICAL APPARATUS. 
211 
3484.—A Set of the various forms of Fossil Fuel. Price, $3.50 
1. Anthracite, 
2. Semi-Bituminous, 
3. Bituminous, 
4. Petroleum, 
5. Brown Coal, 
6. Lignite, 
7. Asphaltum or Bitumen, 
8. Peat. 
3485.—Series of Ten Minerals, for illustrating and testing 
the different degrees of hardness of minerals: 
1. Talc. Foliated, 
2. Rock Salt, 
3. Calc. Spar, Transparent, 
4. Fluor Spar, Crystal’d variety, 
5. Apatite, Transparent Cryst. 
6. Felspar, Cleavable variety, 
7. Quartz, Transparent “ 
8. Topaz, Crystal, 
9. Sapphire, Cleavable variety. 
10. Diamond. 
Price, $5.00. In elegant wood case, $1.00 extra. 
3486.—A Set of Minerals, for illustrating metalic color. 
In case, $3.50 
1. Native Copper, 
2. Magnetic Pyrites, 
3. Copper Pyrites, 
4. Native Antimony, 
5. Galena, 
6. Magnetite. 
3487. —I have a few superior specimens of that curious variety of 
Quartz Rock, termed Itacolumite. The shape and size of these fine 
examples of this mineral are just right exactly, for class exhibition, 
viz.: in sawed slabs, about eight and one-half inches long, two inches 
wide, and one and one-eighth thick. Price, each, $2.00 
3488. —A very Complete and well arranged cabinet of good sized 
specimens of minerals, intended for the use of Blow-pipe students and 
public schools, put up in sections of about fifty minerals, each sec- 
tion enclosed in handsome case, with movable top, with numbered 
catalogues. Per section, $6.00 
3489. —Ditto, ditto, consisting of full series of Rocks, of the various 
formations, arranged in accordance with Dana’s System of Geology, 
with catalogue. For section of 50 specimens each, $5.00; 10 sec- 
tions, $40.00. 
3490.—A Set of Minerals, illustrating Cleavage: 
1. Galena, 
2. Idocrase, 
3. Tournonite, 
4. Barite, 
5. Gypsum, 
6. Hornblende, 
7. Felspar, 
8. Calcite, 
9. Fluor Spar, 
10. Blende, 
11. Tungsten, 
12. Limonite, 
13. Sulphur, 
14. Pyromorphite, 
15. Cryolite 
16. Tabular Spar, 
17. Iceland Spar, 
18. Rutile. 
Complete, in pasteboard case, $10.00 212 
E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE 
3491. A Suit of the various varieties of Mineral Oils, six speci- 
mens in all, put up in clear flint sample vials, for exhibiting to 
students the natural properties, color, etc., of petroleum, as found 
in the several localities of the United States. These samples range 
in specific gravity from 26 deg. Beaume to 50 deg. Beaume. $5.00 
3492. —Minerals, chiefly American, unclassified; size about 
2|x2|; excellent for completing amateur collections; all picked 
specimens; at the uniform price of. each, .25 
The Calcite and Aluminous series in this selection are very well 
assorted, and are quite complete. Included in it are some speci- 
mens of that curious quartzose crystalization, from Bohemia, termed 
there, Kapp-Stein. 
3493. —I have on sale a collection of Lava and Volcanic Tufa, 
which is, I think, worthy of considerable attention. It is a full series, 
from the various volcanoes in the Sandwich Islands, and was col- 
lected by Commodore Wilkes, in 1848, when there. It would be an 
exceedingly interesting addition to any college or private collection, 
possessing as it does also, great historical interest. Twenty speci- 
mens in all. $10.00 
3494. A Suit of Colorado Minerals, including all of the ores 
and minerals found in this great mineral-bearing Territory. This is 
a quite unique and interesting little collection, suitably labeled and 
arranged in fine pasteboard case, with partitions and movable top 
50 in all. Price, $6.00 
ELEGANT AND RARE CABINET SPECIMENS. 
This part of my collection I am giving great attention, and 
assure my patrons that nothing under this head will be found in- 
complete. Included in it I may mention some extraordinarily fine 
and beautiful specimens of Agate, finely polished. 
3495. —Splendid Falherz Specimens, from Germany. 
3496. —Magnificent Fluors, from Derbyshire and Cumberland, 
England. 
3497. Elba Iron Ores, Gbtite, etc., of perfect beauty and size. 
3498. —That very Rare and Exquisite, as well as wonderful, 
production of oceanic life, called “ Venus’ Flowing Basket,” or “Ex- 
plectella Speciosa,” found 60 fathoms deep near the Phillipine Islands, OF CHEMICAL AND PHYSICAL APPARATUS. 
213 
and for a specimen of which Cummings, the great English natural- 
ist paid, in London, £30 only six or eight years ago. $5.00 each. 
3499. —A Complete Set of Fossiliferous Rocks, of about 4 x 
4 ins. in size, illustrative of the geological formations of New York. All 
of the New York groups and periods are fully illustrated with speci- 
mens from the principal localities in that State. Each specimen 
and group is characterized by its distinctive fossil or fossils. This 
collection of rocks has received the great approval of all the col- 
leges who have purchased it, and is certainly deserving of notice, 
not only on account of its having been obtained entirely from New 
York State, but, also, for its completeness. It is believed to be the 
only collection of the kind ever put on sale in this country, and 
will be found to be' eminently well adapted for teaching Dana’s 
Geology in colleges, schools, etc. Carefully labeled with name of 
group, fossil, etc. 55 specimens in all. $25.00 
3500. There are left at my disposal two Cabinet Collections of 
Minerals, belonging to gentlemen of the highest standing in the 
World of science, but who, for private reasons, wish to dispose of them. 
Selected with rare taste and perfect mineralogical knowledge, 
through a long series of years, each specimen of these collections 
will be found to be unique examples of their class, and every class 
most fully illustrated. They have been gathered together from the 
most celebrated localities of the world, and contain specimens val- 
ued at $250 to $300 each. 
This is a rare opportunity for colleges. Price, $3,000 to 6,000 
3501. —A Case of German Minerals, beautifully arranged, in 
an elegantly polished wood case, with drawers, containing 200 
minerals, carefully wrapped for transportation, and completely clas- 
sified and labeled; size of specimen averages about x 2 inches 
Price, with case included, $25.00 
This case would make a very useful and handsome holiday 
present. 
3502. —The same, as above, in all respects, except containing 
150 minerals instead of 200. Price, $20.00 
3503. —The same, as above, in all respects, except containing 
100 minerals instead of 150. Price, $15.00 
For the remainder of this department reference may be had to 
a separate Catalogue of Ward’s Plaster Casts. APPARATUS IN SETS, 
AND 
FOR SPECIAL PURPOSES. 
The marginal figures in small type refer to numbers in regular catalogue. 
3504 
3504.—Set of Apparatus and Chemicals, for fifty initiatory 
experiments for boys and girls, with directions for using. These 
are packed in a neat wooden box, with compartments and hinged 
lids, and consists of the following articles. Price $10.00 
APPARATUS. 
1 Glass Flask, 1 oz., 
1 Small Sand Crucible, 
1 Shallow Sand Bath, 2 in , 
1 Small Porcelain Crucible, 
1 Glass Mortar and Pestle, 2 in. 
2 “ Stirring Rods, 
1 “ Spirit Lamp, 
1 Small Tripod, 
1 Test Glass, with lip, 
4 Test Tubes, 
2 Test Tube Holders, 
3 Test Papers, 1 each color, 
50 Small Filters, cut, 
J Jeweller’s Blow-pipe, 
1 Corrugated Funnel, 2 in., 
1 Porcelain Evaporating Dish, 3 in., 
1 Piece Tin Foil, 
1 “ Rubber Tube, 
1 Pair Iron Pincettes, 
3 inches Copper Wire, 
3 “ Iron “ 
2 ft. Magnesium Ribbon. OF CHEMICAL AND PHYSICAL APPARATUS. 
215 
Acid, Boracic, 
“ Benzoic, 
“ Tartaric, 
Alum, 
Ammonia, Carbonate, 
Chloride, 
“ Oxalate, 
Antimony, Metallic, 
. “ Sulphide, 
Baryta, Nitrate, 
Borax, 
Camphor, 
Charcoal, 
Cobalt, Chloride, 
Copper, Nitrate, 
“ Sulphate, 
Fire Clay, 
Fluor Spar, 
Galena, 
Galls, Tinct., 
Gum Arabic, 
Iron Filings, 
“ Sulphide, 
“ Sulphate, 
Isinglass, 
Lead, Acetate, 
“ Oxide-, 
Lime, Carbonate-, 
“ Chloride, 
“ Phosphate, 
Litharge, 
Litmus, 
“ Paper, Red, Blue, 
“ Tincture, 
Logwood, 
Lycopodium, 
Magnesia, Carbonate, 
Magnesium, Sulphate, 
CHEMICALS. 
Manganese, Oxide, 
Mercury, Nitrate, 
Pharoah’s Serpents, 
Phosphuretted Oil, 
Potash, Prussiate, 
Potassa, Bichromate, 
“ Carbonate,. 
u- Caustic,. 
u- 
u Nitrate, 
Pbtassium, Iodide, 
Silver, Nitrate, 
Soda,. Carbonate, 
“ Phosphide, 
“ Sulphate, 
Strontia, Nitrate, 
Turmeric Paper, 
Zinc, Granulated, 
“ Sulphate. 
3505.—Set of Apparatus and Chemicals, according to the 
following list, adapted for use in ordinary schools. Price, $10.00 
1 Alcohol Lamp, 
1 Retort Stand, 2 Rings, 
3 Pint Flasks, 
3 Quart “ 
6 Test Tubes, ass’d sizes, 
1 Test Tube Holder, 
1 Pneumatic Trough, 
1 Small Porcelain Mortar, 
2 Small Evap’ing Dishes, 
APPARATUS. 
1 Pack. Cut Filters, 
| lb. Glass Tube, 
3 ft. India Rubber Tube,. 
1 Glass Funnel,. 3 in. 
1 oz. Acid, Arsenious, 
1 “ “ Muriatic, 
1 “ 11 Nitric, 
1 “ “ Oxalic, 
1 “ “ Sulphuric, 
4 “ Alum, 
4 “ Ammonia, 
4 “ “ Carbonate, 
4 “ Ammonium, Chl’de, 
4 “ Antimony, 
4 “ “ Tartrate, 
1 “ Baryta, 
| “ Bismuth, 
4 “ Borax, 
1 “ Cobalt, Chloride, 
4 “ Copper, Sulphate, 
2 oz. Fluor Spar, 
| “ Iodine, 
4 “ Iron, Sulphate, 
4 “ Lead, Acetate, 
4 “ Lime, Chloride, 
1 lb. Manganese, Oxide, 
1 “ Mercury, 
1 oz. “ Chloride- 
1 “ Nut Galls, 
2 “ Potash, Ptussiate- 
Yellow, 
1 “ Ditto, ditto, Red, 
2 “ Potassa, 
2 “ “ Bichromate, 
4 “ 11 Chlorate, 
2 “ “ Nitrate, 
CHEMICALS. 
| oz., Potassium, 
1 “ “ Cyanide,. 
“ Iodide,. 
1 “ Silver, Nitrate, 
2 “ Soda, Sulphate,. 
1 “ Sodium, 
2 “ Strontia, 
4 “ Sulphur, 
2 “ Wax, 
& ft. Iron Wire, 
3 “ Magnesium Wire, 
1 Piece Copper, 
1 “ Zinc, 
2 Sheets Litmus Paper; 
2 “ Turmeric “ 
1 Stick Phosphorus. 
3506.—Set of Apparatus and Chemicals,, the same as the 
foregoing, with the following additions. Price, $15.00 
APPARATUS.. 
1 Deflagrating Spoon, 
1 Evolution Flask, with 
Funnel and Tubes, 
6 ft. India Rubber Tube, 
1 India Rubber Gas-bag, 
1 gak, 
1 Jeweller’s Blow-pipe, 
2 Stop-cocks, 
1 Tripod, 
1 Wash Bottle.. 
3507.—Set of Apparatus and Chemicals;, following, care- 
fully packed in a dovetailed box, with sliding, lidi, and adequate' to 216 
E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE 
the performance of the exueriments in “ Steele’s Fourteen Weeks in 
Chemistry.” Price, $20.00 
APPARATUS. 
1 Alcohol Lamp, 4 oz., 
1 Deflagrating Spoon, 
2 Evaporating Dishes, 
1 Evolution Flask, with Funnel and 
Delivery Tube, 
1 Florence Flask, with Delivery Tube, 
1 Funnel, 3 in., 
1 Jeweller’s Blow-pipe, 
1 Small Lead Tray, 
1 Mortar and Pestle, 
1 Ring Platinum Sponge, 
1 Stop-cock and Connector, for Gas- 
bag, 
6 Test Tubes, assorted sizes, 
1 Tripod, 
2 Tubes, for Hydrogen Tones, 
| lb. French Glass Tube, 
1 ft. India R’r Tube, for connections. 
CHEMICALS. 
2 oz. Acid, Arsenious, 
i “ Oxalic, 
4 “ Alum, 
4 “ Ammonia, 
1 “ Ammonium, Chl’de, 
| “ Antimony,Metallic, 
| “ Barium, Chloride, 
4 “ Bleaching Powder, 
2 “ Bone Black, 
| “ Calcium, Phosph’t, 
Pieces, 
| “ Carbon, Bisulphide, 
1 “ Cobalt, Chloride, 
Solution, 
2 “ Copper, Sulphate, 
4 “ Ether, Sulphuric, 
2 oz. Fluor Spar, 
| “ Gun Cotton, for 
Collodion, 
| “ Iodine, 
2 “ Iron, Sulphate, 
2 “ “ Sulphide, 
4 “ Lead, Acetate, 
1 “ Litharge, 
16 “ Manganese, Oxide, 
“ Mercury, Chloride, 
| “ Nut Galls, Ground, 
{ “ Phosphorus, 
| “ Platinum, Chlor’de, 
Sol., 
2 “ Potash, Caustic, 
Sticks, 
| oz. Potash, Yellow 
Prussiate, 
| “ Red Prussiate, 
1 “ Potassa, Biearbon’e, 
4 “ “ Chlorate, 
1 “ u Nitrate, 
1 “ Potassium, 
| “ Iodide, 
4 “ Silver, Nitrate, 
Sol, 
J “ Sodium, 
4 “ Sulphur, 
2 ft. Magnesium Ribb’u, 
1 Specimen Metal Alu- 
minum, 
6 Sheets Filter Paper. 
3508.—Set of Apparatus and Chemicals, to illustrate Wil- 
son’s Course in Chemistry, packed in the same manner as the fore- 
going. Price, $85.00 
APPARATUS. 
1 Pneumatic Trough, 
1 Alcohol Lamp, 
1 Davy’s Safety Lamp, 
2 Bunsen Burners, 
1 Compound Blow-pipe, plain, 
1 Mouth “ 
1 Liebig’s Condenser, 
1 Glass Oxygen Flass, 
3 “ Retorts, each 1 pt., 
6 “ Tall Jars, 
2 “ Receivers, each 2 qts., 
12 “ Flasks, asso’d sizes, 4 to 16 ozs , 
4 ‘ F in nets, assorted, 
2 lb. Glass Tube, 
1 “ 'l Rods, 
1 Graduate, 4 ozs., 
2 Pouring Glasses, 
1 Woulff’s Bottle, 1 qt., 
1 Nest Beakers, 
1 “ Evaporating Dishes, 
4 doz. Test Tubes, assorted, 
| “ Thistle “ 
£ “ Safety “ 
1 Jar, for Iron Wire Experiments, 
1 Retort Stand, 
2 Rubber Bags, 8 to 15 gals., 
1 “ Gas-bag, 6 gals., 
1 Piece Brass Wire Gauze, 6 ins. sq., 
1 “ Platinum Foil, 
1 yd. “ Wire, 
4 yds. i ins Rubber Tube, 
3 Deflagrating Spoons, 
3 Packs Filter Paper. 
CHEMICALS. 
Acid, Arsenious, 
“ Muriatic, 
“ Nitric, 
“ Oxalic, 
“ Sulphuric, 
Alum, 
Ammonia, 
“ Carbonate, 
Ammonium, Chloride, 
Antimony, 
“ Tartrate 
Baryta, Nitrate, 
Bismuth, 
Borax, 
Cobalt, Chloride, 
Copper, 
Copper, Sulphate, 
Fluor Spar, OF CHEMICAL AND PHYSICAL APPARATUS. 
217 
chemicals.— Continued. 
Iodine, 
Iron, 
“ Sulphate, 
Lead, Acetate, 
Lime, Chloride, 
Litmus Paper, 
Magnesium, 
Manganese, Oxide, 
Mercury, 
“ Chloride, 
Nut Galls, 
Phosphorus, 
Potash, 
Potassa, Bichromate, 
“ Chlorate, 
“ Nitrate, 
Potassium, 
“ Cyanide, 
“ Ferricyanide, 
“ Ferrocyanide, 
Potassium, Iodide, 
Silver, Nitrate, 
Soda, Sulphate, 
Sodium, 
Strontia, Nitrate, 
Sulphur, 
Turmeric Paper, 
Wax. 
Zinc. 
3509.—Set of Apparatus, to be used in illustrating Barker’s 
Text Book of Inorganic Chemistry, packed in the same manner as 
the last. Price, $100.00 
1942. | doz. Glass Cylinders, 12 in., 
Fig. 10, p. 103, 
1516. i “ Saltmouths, assorted, 
2276. | “ Flasks, | pint, 
2322. I 11 Funnels, assorted, 
1540. | “ Woultf’s Bottles, | pint, 
1538. % “ Woulft’s Bottles, 2 necks, 
1446. | “ Bell Glasses, 1 pt., 2 qts., 
H gals., 
1453. 1 “ Stoppered Bell Jars, quart, 
3262. 1 “ Conical Test Glasses, 
3269. 1 “ Test Tubes, 5 in., 
3269. 1 “ “ “ 6 in., 
3364. 1 “ U Tubes, 
3265. 1 “ Bulb “ 
2331. | “ Funnel Tubes, 
2335.1 “ Safety “ Fq/. ll,p. 104, 
1469. | “ Combustion Spoons, 
2907. | “ Pipettes, 
2402. 1 Hydrogen Generator, 
2395. 1 Sulphuretted “ “ 
2203. 1 Eudiometer, straight tube, 
2204. 1 “ Ure’s, 
2189. 1 Diffusion Apparatus, Fig.3, p.92, 
1714. 1 Calcium Chloride Tube, Fig. 6, 
p. 95, 
2862. 1 Siemen’s Tube for Ozone, 
1 Apparatus for Decomposition 
of Water, 
1452. 1 Copper Bell Glass, with Stop- 
cock, 
2055. 1 Drying Bottle, Fig. 7, p. 98, 
3016. 1 Tubulated Retort and Receiver, 
pint, 
«< | a a a } a 
2054. 1 Metal or Glass Cistern, 
1 Porcelain Cistern, Fig. 15, p. 
117, 
1 Adjustable Clamp, Fig. 15, p. 
117, 
1971, ’72, ’74. 1 Phosphorus Tripod Ap- 
paratus, Fig. 17, p. 119. 
1478. 1 Compound Blow-pipe, 
3108. 1 Wire Gauze Cage, Fig. 1, p. 91, 
1960. 1 Safety Lamp, 
3186. 1 Gas Furnace, Fig. 7, p. 98, 
1602. 2 Bunsen Burners, 
3234. 2 Retort Stands, 
3066. 4 Iron Sand Baths, 
1969. 6 Combustion Spoons,with cov’rs, 
3226. 1 Test Tube Rack, 
1405. 1 Hydrogen Balloon. 
2382, 2383.1 Two-Gallon Gas-bag, with 
Stop-cock. 
2221. 1 Nest Evaporating Dishes, 
1422. 1 “ Beakers, from 1 qt. down, 
1899. 1 “ Hessian Crucibles, 
1885. | doz. Porcelain Crucibles, with 
covers, 
3378. 1 lb. Glass Tube, assorted, 
3387. 8 ft. Rubber “ “ 
2938. 3 ft. Platinum Blow-pipe Wire, 
I oz. Platinized Asbestos. See 
Chemicals. 
3510.—Set of Apparatus, arranged for the purpose of illustrat- 
ing a short course of Popular Lectures. Price, $200.00 
2827. 1 Porcelain Mortar, 3£ in., 
“ 1 “ “ 5 “ 
2822. 1 Iron, “ 6 4 
2598. 1 Glass Spirit Lamp, 
2614. 1 doz. Wicks for ditto, 
2035. 1 Porcelain Dome for ditto, 
2590. 1 Brass Argand Spirit ditto, 
2614. 1 doz. Wicks for ditto, 
2586. 1 Blow-pipe Spirit ditto, 
3080. 1 pr. Trimming Scissors, 
3321. 1 “ Small Tongs, with bent ends, 
1750. 1 “ Tube Tongs, wood, 
3319. 1 “ Charcoal Tongs, 
3322. 1 “ Steel Crucible ditto, 
2303. 1 “ Platinum Pointed Forceps, 
2276. J doz. Glass Flasks, 4 oz., 
“ i “ “ “ 8 “ 
“ 1 a u « 16 « 218 
E. b. benjamin’s descriptive catalogue 
apparatus.—Continued. 
2276. 2 Glass Flasks, 32 oz., 
2233. 1 “ with DeliveryTube, 
“ 1 Evolution flask, with Delivery 
Tube, 
3027. 3 Plain Retorts, 4 oz., 
“ 3 “ “ 8 “ 
“ 3 “ “ 16 « 
3031. 2 Clark’s Retorts, 
3040.1 Oxygen “ quart, 
3033. 2 Tubulated Stoppered Retorts, 
8 oz., 
“ 2 Ditto, ditto, ditto, 16 oz., 
“ 2 Ditto, ditto, ditto, 32 “ 
3016. 2 Ditto, ditto, Receivers, 4 oz., 
“ 2 Ditto, ditto, ditto, 8 “ 
“ 2 Ditto, ditto, ditto, 16 “ 
3234. 1 Iron Retort Stand, with 3 Rings, 
1422. 1 Nest Beakers, plain, Nos. 0 to 8, 
1434. 1 “ “ lipped, 1 to 5, 
3269. 3 doz. Test Tubes, 5 in., 
“ 3 “ “ 6 “ 
1575. fa “ “ Brushes, 
3274. fa “ “ Holders, 
1 Nickle Plated Test Spoon, 
3278. 2 Porcelain Test Plates, 
3262. 2 Conical Test Glasses, 2 oz., 
<i 2 “ “ (< 4 << 
<t 2 11 11 <( g •< 
3226. 1 Test Tube Rack, 
3367. 1 doz. Sheets Test Paper, each 
Red, Blue and Yellow, 
1 Collection Test Metals. See 
Minerals. 
2357. 1 Hand Furnace, Clay, with Iron 
Binding, 
3353. 1 Tripod Support, 
3215. 2 Table Supports, with Fork and 
Pins, 
3206. 1 Hinged Wood Clamp Support, 
3237. 1 Shelbach’s Support, with Iron 
Foot, 
2322. | doz. Glass Funnels, assorted, 
2335. 2 Safety “ 
2331. 1 Com. Filte ing ditto, 
2216. 2 Filter Dryers, 
3255. 1 Pack Filters to fit Funnels, 
3216. 1 Wood Filter Stand, with 1 arm, 
3218. 1 “ “ “ “ 2 “ 
2251. 2 Porcelain Filter Rings, each 
with 3 arms, 
2442. 1 Graduated Measure, 4 oz., 
1 “ “8 “ 
1 “ “ 16 '• 
2440. 1 Minim Glass, 
3065. 1 Deep Sand Bath, 7 in., 
3066. 1 Shallow “ 6 “ 
1280. 1 Air Globe, 1 gal., 
1971. 1 Deflagrating Globe, 2 gals., 
1966. 1 “ Spoon, 
1 “ Cap, 
2039. 1 Schuster’s Dropping Bottle, 
plain, 
2040. 1 Ditto, ditto, ditto, stoppered, 
3406. 1 Washing Bottle, pint, 
“ 1 “ “ quart, 
1542. 2 Woulff’s Bottles, 3 necks, 
1519. 2 Bottles, with glass stoppers, for 
Distilled Water, 
1519. 3 Ditto, ditto, ditto, quarts, 
1519. 3 Ditto, ditto, ditto, | gal., 
1524. 1 doz. Ditto, ditto, ditto, 8 oz , 
1524. 1 “ Ditto, ditto, ditto, 16 oz., 
1532. 1 Bottle, for Chlorine, 
3164. 1 doz. Glass Stirrers, 3 in., 
3164.| “ “ 6“ 
3164. 2 “ “ 9 “ 
2906. | Straight Pipettes, 
2907. i Bulbed “ 
2955. 1 Japanned Pneumatic Trough, 
12x15, 
2671. 1 Mercury Trough, 10 lbs, 
3378. 2 lbs. Glass Tubing, assorted, 
3387. 6 ft. Rubber Tubing, 
2333. i doz. Funnel Tubes, 
1356. 1 “ Arsenic “ 
3022. | “ Reduction “ with 1 Bulb, 
3023. fa “ “ “ 2 ‘‘ 
3358. 1 Set Tubes for Hydrogen Tones, 
1583. 1 Pipe for Hydrogen Bubbles, 
1405. 1 Small “ Balloon, 
2402. 1 Glass “ Generator, 
2220. 2 Sets common Evaporating 
Dishes, with lips, 
2225. 1 Porcelain ditto, 6 in., 
2225. 1 “ “ 10 “ 
2225. 1 “ “ 12 “ 
2216. 1 Set Royal Berlin Evaporating 
Dishes, small, shallow, 
1885. J Doz., ditto. Crucibles, No. 2, 
1897. 1 Nest of 5 Hessian “ 
1893. 1 Platinum Crucible, 
3408. | doz. Watch Glasses, 3 in., 
3408. fa “ “ “ 4 “ 
3408. fa “ “ “ 5 “ 
3409. 1 “ “ Springs, 
1690. 3 Small, shallow R. B. Casseroles, 
1687. 1 Semi-Berlin Casserole, 4 in., 
1687 1 “ '• “ 6 “ 
2002. 6 Assorted Porcelain Digesters, 
1283. ’84. 3 “ Glass Adapters, 
1942. 6 “ “ Cylinders, with 
Ground Tops, 
1446. | doz. Bell Jars, pints, 
1446. fa “ 11 quarts, 
1448. 1 Bell Jar, with Glass Foot, 6 x 
12 in., 
1452. 1 Bell Jar, with Brass Cup, Stop- 
cock and Connecting Tube, 
2550. 3 Specie Jars, with Ground Tops, 
1 gal, 
“ 6 Ditto, ditto, ditto, ditto, 1 gal., 
1486. 1 Berzelius, Blow-pipe, 
1848. 1 Gross Assorted Corks, 
1851. Set of 12 “ Corkborers, OP CHEMICAL AND PHYSICAL APPARATUS. 
219 
apparatus.—Continued. 
2024. 1 Still and Worm, 2 gals., 
2400. 2 Sets of Von Babo’s Apparatus 
for evolving Sulphuretted 
Hydrogen, 
2382. 2 Five-gallon Gas-bags, fitted, 
2417. 3 Assorted Gas Tubes, 
1441. 1 Small Beehive Shelf 
3341. 1 Lead Tray, 
3256. 3 Tapers, mounted on Wires, 
1864. | doz. Glass Covers for Jars, 
3237. 1 Triangular File, 
3236. 1 Semicircular “ 
“ 1 Rat’s Tail “ 4 in., 
“ 1 « “6 « 
2578. 2 Sets Chemical Labels. 
N. B.—When gas is employed in the place of alcohol, gas-burners, with 
rubber connections, may be substituted for the spirit lamps at a small increase 
of cost. 
A set of chemicals, adequate to the performance of experiments with the 
foregoing apparatus, can be supplied for about $25.00. 
3511 
3511.—Set of Apparatus, for conducting operations in Vol- 
umetric Analysis. Price, $60.00 
No notice is taken, in this list, of instruments which are not volumetric; 
such as Balances, Weights, Boiling Flasks, Gas-burners, etc. Full information 
respecting such instruments may be found in other sections of this work. 
1590. 1 Mohr’s Burette, 100 c.c., in 
halves, 
2 Ditto, ditto, 50 c c., in fifths, 
“ 1 Ditto, ditto, 25 c.c., in tenths, 
1591. 1 Ditto, ditto, 50 c.c., in tenths, 
with Stopcock, 
1587. 1 Bink’s Burette, 100 c.c., 
3207. 1 Wood Support for 4 Burettes, 220 
E. b. benjamin’s descriptive catalogue 
3204. 1 Brass Support for 2 Burettes, 
1597. 5 Erdman’s Floats to fit ditto, 
2913. 1 Graduated Pipette, 100 c.c., in 
ones, 
“ 1 Ditto, ditto, 50 c.c., in fifths, 
“ 1 Ditto, ditto, 10 c.c., in fifths, 
“ 1 Ditto, ditto, 5 c.c., in tenths, 
2907. 2 Bulbed Pipettes, 
2899. 4 Spring Clamps, with Tips, 
1946. 1 Graduated Cylinder, with Lip, 
50 c c 
“ 1 Ditto, ditto, with ditto, 100 
“ 1 Ditto, ditto, ditto, 250 c.c., 
“ 1 Ditto, ditto, ditto, 500 c.c., 
apparatus.—Continued. 
1946. 1 Graduated Cylinder, 1,000 c.c., 
2693. 1 Mixing Jar, stopper’d, 1,000 c.c., 
2692. 1 “ Bottle, 1,000 c.c., 
3278. 1 Porcelain Slab, 5 in., 
1333. 1 Alkalimeter, for Chameleon 
Test, 
2924. 2 Porous Plates, for Drying Pre- 
cipitates, 
1420. 1 Set of six Beakers, 
3262. | doz. Test Glasses, | oz., 
3164.1 “ Stirring Rods, 
2318. | “ Glass Funnels, 1 to 4 in., 
3378. | lb. Glass Tubing. 
3267. 1 doz. Test Papers, each color, 
2265. | quire Swedish paper. 
3512.—Set of Apparatus and Chemicals, for the perform- 
ance of experiments in Agricultural Chemistry. Price, $05.00 
1399. 1 Small Balance for Grain w’ts, 
2827. 1 Porcelain Mortar, No. 8, 
3410. 1 Copper Water Bath, 
3066. 1 Iron Sand Bath, 5 in., 
2598. 1 Glass Spirit Lamp, 4 oz., 
2615. 3 ft. of Wick for the same, 
2442. 1 Graduated Measure, 1 oz., 
2279. 3 French Flasks, 4 oz., 
“ 3 “ “ 8 oz., 
2276. 3 Bohemian “ 8 oz., 
“ 3 “ “ 16 oz., 
2389. 1 Evolution “ with Delivery 
Tube, pint, 
“ 1 Glass ditto, with ditto, 
3040. 1 Oxygen Retort, quart, 
2402. 1 Hydrogen Generator, 
1943. 1 Cylinder, with Lip and Glass 
Foot, 2x12 in., 
1446. 1 Knobbed Bell Jar, pint, 
“ 1 “ “ “ quart, 
1453. 1 Stoppered “ “ “ 
“ 1 “ “ “ gallon, 
1687. 1 Porcelain Casserole, 
2002. 1 “ Digester, 
3033. 1 Stoppered Retort, 4 oz., 
3027. 1 Plain Retort, 4 oz., 
1 Brass Retort Stand, 
1971. 1 Deflagrating Globe, 1 gallon, 
1966. 1 “ Spoon and Cover, 
2222. 6 Semi-Porcelain Deep Evaporat- 
ing Dishes, 
2210. 2 Berlin ditto, about 8 in., 
“ 2 ditto ditto, “ 10 “ 
APPARATUS. 
2970. 1 Conical Jar, tall, 4 oz., 
3262. 3 “ Test Glasses, assorted, 
small, 
3226. 3269. 1 Test Tube Stand, filled, 
3274. 2 Test Tube Holders, wood, 
2322. I Glass Funnel, 2 inches, 
“ 1 “ “ 2i “ 
a i < a 3 “ 
1897. 1 Sand Crucible, No. 0. 
“ 1 <• “ No. 1. 
“ 1 “ “ No. 2. 
2255.1 Pack Filters, 5 in., 
“ 1 “ “6 in., 
“ 1 “ “7 in., 
3217. 1 Filter Stand, 
1483. 1 Black’s Blow-pipe, 
2925. 1 Small Platinum Capsule, | oz , 
3125. 1 “ Steel Spatula, 
3321. 1 pair Japanned Tongs, 
3155. 1 Horn Spoon, 
3350. 1 Porcelain Triangle, 
3164. i doz. Stirring Rods. 
3407. 1 pair Watch Glasses, 
1755. 1 Watch Glass Holder, 
2868. | doz. Sheets Litmus Paper, each 
color, 
1516. | doz. Salt-Mouths, 1 oz., 
1517. i “ Tinctures, 1 oz., 
1504. 1| doz. Packing Bottles, corked. 
2 oz., 
“ 1 ‘‘ Ditto, ditto, ditto, 4 oz., 
2935. 1 Specimen Platinum Foil, 
2938. 1 “ “ Wire. 
CHEMICALS. 
1 oz. Acid, Acetic, 
1| “ “ Tartaric, 
4 “ Alum, Crystals, 
1 “ Ammonia, Carbo- 
nate, 
2 “ “ Nitrate, 
1 “ “ Oxalate, 
3 oz. Ammonium Chlo- 
ride, 
2 “ Barium, Chloride, 
2 “ “ Nitrate, 
4 “ Calcium, Chlor- 
ide, Fused, 
4 “ “ Hydrate, 
2 oz. Copper, Bl’k Ox- 
ide, 
2 “ Iron, Proto-Sul- 
phate, 
4 “ “ Sulphide, 
| “ Magnesia, Calc’d, 
4 “ “ Sulphate, OF CHEMICAL AND PHYSICAL APPARATUS. 
221 
8 oz. Manganese, Per- 
Oxide, 
1 “ Mercury, Red Ox- 
ide, 
| “ Phosphorus, 
chemicals.—Continued. 
1 oz. Potassa, Carb’e, 
4 “ “ Chlorate, 
1 “ “ Hydrate, 
4 “ “ Nitrate, 
3 “ Silica, in powder, 
1 oz. Soda, Biborate, 
1| “ “ Carbonate, 
1 “ “ Phosphate, 
6 “ Zinc, Granulated. 
3513.—List of Apparatus, for use in the Volumetric Analysis 
of Urine. Price, $20.00 
1590. 1 Mohr’s Burette, 
3206. 1 Burette Support, 
2899. 1 Clamp and Tip, with Rubber 
Attachment. 
2913. 1 Graduated Pipette, 25 c.c. in 
fifths, 
“ 1 ditto ditto, 25 c.c. in tenths, 
1946. 1 ditto Cylinder, 500 c.c. lipped, 
2909. 3 Fixed Pipettes, ass’d, 5 to 20, 
2906. 3 Straight “ 
2276. 1 Bohemian Flask, wide mouth, 
I pint, 
'• 1 “ “8 oz., 
“ 1 “ “ 16 “ 
“ ! « “25 “ 
2636. 1 Litre “ 
“ 1 quart’r Litre “ 
2322. 1 Glass Funnel, 1| in., 
U | 66 16 2 U 
2322. 1 Glass Funnel 21- in., 
2255. 1 Pack Filters for each size, 
3216. 1 Funnel Holder, 
3262. i doz. Test Glasses, oz., 
“ i “ “ “ 1 oz., 
3269. | “ Test Tubes, with wide 
mouths for Hydrometer, 
3226. 1 Support for ditto, 
1420. 1 Set of six Beakers, 
1438. 1 Beaker Flask, 
3278. 1 Porcelain Slab, 6 in., 
2922. | doz. Porcelain Plates for Indi- 
cating Test, 
2634. I doz. Sheets Litmus paper, each 
color, 
1519. 1 Bottle for Litmus Tincture, 
3406. 1 Wash Bottle, pint, 
3164. doz. Glass Stirrers, 6 inch. 
3514.—Set of Apparatus and Chemically Pure Tests, for 
use in the Qualitative Analysis of Urinary Deposits. Price, 837.50 
APPARATUS. 
1400. 1 Balance, with Weights, 
2598. 1 Spirit Lamp, 
2615. 1 yard Lamp Wick, 
1644. 1 Lamp Cylinder, 
3233. 1 Iron Stand, with 2 Rings, 
3066. 1 Saud Bath, 
3410. 1 Water “ 
3353. 1 Tripod, 
3461. 1 sq. ft. Wire Gauze, 
2518, ’19. 1 Urinometer, with Solution 
Tube, 
1885. 1 Porcelain Crucible, No 1, 
2925. 1 Platinum Capsule, £ oz., 
3321. 1 pr. Tongs for holding the same 
1675. 3 Porcelain Capsules, assorted, 
3269. 8 Test Tubes, 6 in., 
3269. 2 “ “ 4x1 in., 
3267. 3 doz. Assorted Test Papers, 
2322. 1 Glass Funnel, 2 in., 
2255. 1 Pack Filters, to fit the same, 
3164. 3 Glass Stirrers, 
3104. 4 “ Slides, 
3407. 3 Watch Glasses, 
2440. 1 Graduated Minim Glass, 
2906. 2 Straight Pipettes, 6 in. 
8 oz. Acid, Acetic, 
8 “ “ Hydrochloric, 
8 “ “ Nitric, 
2 “ Ammonia Carbon’te 
2 oz. Ammonia, Oxalate, 
8 “ “ Spirits, 
2 “ Baryta, Nitrate, 
4 “ Potash, Caustic Sol. 
CHEMICALS. 
4 oz. Copper, Sulphate, 
J “ Silver, Nitrate, 
1 “ Zinc, Chlo’ide, fus’d. 
3515.—Apparatus, for Qualitative Chemical Analysis. 
Price, $50.00 
2829. 1 Porcelain Mortar, 2| in., 
2599. 1 Spirit Lamp, 3 oz., 
2615. 1 yd. Wick for ditto, 
3080. 1 pr. Trimming Scissors, 
3350. 2 Porcelain Triangles, 
1644. 1 Lamp Cylinder Furnace, 
3351. | doz. Wire Triangles, 
3066. 1 Five-inch Sand Bath, 
1885. 1 Porcelain Crucible, 1 in., 
2424. 1 sq. ft. Iron Wire Gauze, 222 
E. b. benjamin’s descriptive catalogue 
apparatus.—Continued. 
3234. 1 Iron Retort Stand, with 3 Iron 
Rings, 
2424. 1 Coarse Wire Netting for sup- 
porting Tubes when in the 
Sand Bath, 
2003. 1 Porcelain Digester, 
3323. 1 pr. Steel Crucible Tongs, 
1671. 6 Small Evaporating Capsules, 
plain, glazed both sides, 
2276, 1 Cooking Flask, each 2, 4, 6 oz., 
1419. 1 Nest Beakers, 1 to 5, 
3027. 1 4-oz. Retort, plain, 
3033. 1 “ “ stoppered, 
3014. 1 “ Tubulated Receiver, 
3331. 1 Clark’s Retort, 
3217. 1 Funnel Holder, 
3164. 1 doz. Glass Stirrers, 3 in., 
“ | “ Ditto, ditto, each 6 and 9 in, 
2318. 1 Glass Funnel, each 2, 2.J, 3 in., 
2255. 1 Pack Filters, each size to fit 
above, 
3226. 1 Test Tube Stand, filled, 
2221. | doz. Semi-Berlin Evaporating 
Dishes, a set, 
3407. 1 pr. Watch Glasses, 2 in., 
1755 1 Watch Glass Holder, 
1690. 1 Small Royal Berlin Casserole, 
3462. | doz. |-oz. Test Glasses, 
2906. -J “ Straight Pipettes, 6 in., 
2907. 2 Cylinder “ 
“ 1 Bulb “ 
3259. 1 doz. 6-in. Test Tubes, 
“ 3 Test Tubes, 2in high, 1 in. wide, 
3378. 1 lb. Glass Tubing, j-in. bore, 
3274. 2 Wooden Test Tube Holders, 
1575. 2 Test Tube Brushes, 
3406. 1 Wash Bottle, pint, 
3387. 1 ft. Rubber Tubing, 
2039. 1 Shuster’s Alkalimeter, plain, 
6 Pieces of ordinary Glass, 4x6 in, 
3267. 6 Sheets Test Paper, assorted, 
1 Small collection of Test Metals, 
for Precipitating, 
2233. 1 Evolution Flask and Delivery 
Tube, 
2427. 1 Plate Cobalt Glass, 
1 Hollow Glass Prism, small, 
3278. 1 Flat Testing Slab, 
2924. 2 Porous Plates, for drying Pre- 
cipitates, 
A collection of forty Reagents can be included in the above, in bottles, if 
required, at reasonablo prices. 
3516.—Apparatus for Physicians, for Medical Tests. $125.00 
2829. 1 Small Porcelain Mortar, No. 0, 
3125. 1 4-in. Steel Spatula, 
1400. 1 Apothecaries Balance, small, 
3451. 1 Set Grain Weights, for ditto, 
2439. 1 Graduate, 1 oz., 
2598. 1 4-oz Spirit Lamp, 
2615. 1 yard Wick for ditto, 
3352 or ’53. 1 Tripod, 
3234. 1 Retort Stand, with 3 Rings, 
3066. 1 5-in. Sand Bath, 
2424. 1 Coarse Wire Gauze, for support- 
ing Tubes, 
3351. 6 Wire Triangles, 
2424. 1 sq. ft. Iron Wire Gauze, 
1486. 1 Berzelius’ Blow-pipe, 
1494. 1 Plattner’s Blow-pipe Lamp, on 
Stand, 
1704. 4 pieces Prepared Charcoal, 
1705. 1 Charcoal Support, 
2938. 1 ft. Blow-pipe Platinum Wire, 
2935. 1 sq. in. Platinum Foil, 
2940. 1 Plat. Crucible, with cover,| oz, 
2925. 1 Platinum Capsule, } oz., 
3455. 3 ft. Fine Copper Wire, 
2303. 1 pr. Platinum pointed Forceps, 
2928. 1 Platinum Spoon, 
2308. 1 pr. Blow-pipe Tongs, with Pla- 
tinum Points, 
2298. 1 pr. Steel Forceps, 
3080. 1 pr. Scissors, 
3149. 1 Brass Weighing Spoon, 
1344. 1 Blow-pipe Anvii, 
2447. 1 Blow-pipe Hammer, 
1356. 4 large Bulb Tubes, Arsenic, 
Clark’s 
2276. 4 Glass Flasks, 1 each, 2, 4, 6, 8 oz , 
3268. | doz. Hard Bohemian Test Tubes 
for Reductions, 
1434. 1 set Lipped Beakers, 1 to 5, 
1420. 1 “ Beakers, 0 to 5, 
3408. 2 Watch Glasses, 3 in., 
2205. 1 set Bohemian Glass Evapora- 
tors, plain, 
1755. 1 Watch Glass H’der, Hoffmann’s, 
1756. 1 “ “ “ Mohr’s, 
3269. 1 doz. Test Tubes, each 3 and 5in., 
3269. i “ 3 in. wide, 
1749. 2 Wooden Test Tube Holders, 
3227. 1 Mahogany Test Tube Stand, 
small, with Drying Pins, 
3271. 1 nest of Test Tubes, in paste- 
board box, 
2002, ’4, ’5. 1 doz. Porcelain Digesters, 
assorted, 
3262. | doz. 1 oz. Test Glasses, 
3164. i “ Stirring Rods, ea. 3 & 6 in., 
2906. | “ Plain Straight Pipettes, 5 
or 6 in., 
2907. 1 Bulb Pipette, 
2969. 1 “ “ Bent Top, 
3378. | lb. Glass Tubing, 
2318. 1 Glass Funnel, ea. 1|, 2,2|, 3 in., 
2255. 1 Pack of Filters for each size, 
3217. 1 Wood Funnel Holder, OF CHEMICAL AND PHYSICAL APPARATUS. 
223 
apparatus.—Continued. 
2251. 2 Porcelain Filter Rings, 3 arms, 
2246. 1 Filter Dryer, 
3406. 8 oz. Wash Bottle, 
3408. 3 Glass Covers, 3 in., 
2924. 2 Porous Plates. 
1 Small Collection of Test Metals, 
2634. 1 doz. sheets Litmus Paper, each 
Red and Blue, 
3278. 2 White Glazed Porcelain Slabs, 
2211. 1 set Royal Berlin, Small, Eva- 
porating Dishes, 
2210. 4 ditto ditto, No. 6, 
1885. 1 Porcelain Crucible, with Covers, 
each 00, 0, 1, 2, 3, 
1350. 1 Marsh’s Arsenic Apparatus, 
complete, 
1356. 2 doz. Assorted Arsenic Tubes, 
2233. 1 Evolution Flask and Delivery 
Tube, 
3031. 1 Clark’s Retort, 
3033. 1 4 oz. Stoppered Retort, 
1542. 1 8 oz. WonIff’s Bottle, fitted Rub- 
ber Corks. 
1524. Tinctures, 8 1-oz., 14 3-oz., 3 4-oz., 
6 8-oz., 
The following bottles, containing Chemicals, as below : 
1516. Salt-Mouths, 16 |-oz., 7 4-qz. 
CHEMICALS. 
4 oz. Acid Acetic, 
2 “ “ Tartaric, 
2 “ " Oxalic, 
6 “ Barium Chloride, 
4 “ “ Nitrate, 
2 “ Cobalt Sol. “ 
4 “ Ammonia C’bonate, 
4 “ “ Chloride, 
4 “ “ Oxalate, 
4 “ “ Sulphide, 
6 “ Calcium, Chloride, 
1 lb. “ Sulphate, 
1 oz. Copper Ammoniated 
Sulphate, 
1 lb. Copper Sulphate, 
1 Piece Copper Foil, 3x3 
in., pure, 
4 oz. Ferrous Sulphide, 
8 “ “ Sulphate, 
1 “ Indigo, 
4 “ Charcoal,Powdered, 
4 “ Ferric Chloride, 
4 “ Flux Black, 
8 “ Lead Acetate, 
2 “ Mercury Chloride, 
2 lb. Manganese, Oxide, 
i oz. Platinum, Chloride, 
Sol, 
1 lb. Potass. Bichromate, 
2 oz. “ Ferricyanide, 
1 oz. Potass. Sulphocy’de, 
1 “ “ Carbonate, 
1 “ “ Cyanide, 
1 “ Silver Amrn’d, Sol., 
i “ DittoNitrate,cryst., 
1 “ Zinc, Chloride, 
| lb. “ Pure, in Sticks, 
4 oz. Potass. Ferrocy’de, 
2 “ “ Ferridcy’ide, 
2 “ “ Hydrate, 
1 “ “ Iodide, 
4 “ “ Nitrate, 
8 “ Sodium, Carbonate, 
2 “ “ Phosphate, 
3 “ Tin, Chloride. 
3517.—Apparatus, for Miners and Engineers. Price, $105.00 
1 Small Cheap Balance and Set 
of Grain Weights. 
2439. 1 2-oz. Graduate, 
1998. 1 Steel Crushing Mortar, 
2818. 1 2-in. Agate “ 
3827. 1 3-in. Porcelain Mixing Mortar, 
3125. 1 Steel Spatula, each 4 and 6 in., 
2237. 1 Triangular File, in handle, 
2236. 1 Round u “ 
“ 1 Half Round File, 
2599. 1 Glass Spirit Lamp, 3oz., 
2615. 1 yd. Wick for same, 
3080. 1 pr. Trimming Scissors, 
3321.1 “ Japanned Tongs, 
3234. 1 Iron Retort Stand, with 3 Rings, 
1885. 1 Porcelain Crucible, each 0 No. 1. 
2002,2005. 8 Assorted Porcelain Di- 
gesters, 
1488. 1 Berzelius’s Brass Blow-pipe, 
with extra Jet, 
2940. 1 Platinum Crucible, i oz., 
2604. 1 Plattner’s Blow-pipe, Lamp and 
Stand, 
1344, 2446. 1 Anvil and Hammer, 
3226. 1 pr. Blow-pipe Tongs, with Pla- 
tinum ends, 
3116. 1 Mixing Spoon, with Spatula, 
2938. 2 ft. Platinum Blow-pipe Wire, 
2935. 1 sq. in. “ Foil, 
2925. 2 Small Platinum Capsules, 
2305. 1 pr. “ “ Pointed Tongs, 
3455. 1 yd. Copper Wire, 
1701. 1 doz. Blocks Prep’d Charcoal, 
1 Bottle Charcoal Powder, 16 oz., 
1 “ Rice Flour, 4 oz., 
2833. 1 Mould for Pastiles, 
3351. 1 Small Wire Triangle, 
3278. 2 5-in. Porcelain Plates, 
3269. 1 doz. Narrow Test Tubes, 3 in., 
3371. 1 a Small Specimen Tubes, 
corked, 
2621. 1 Magnifying Lens, in horn case, 
3378. 1 lb. Glass Tubing | in. bore, 
3333. 1 pr. Cupel Tongs, 
1356. 1 doz. Assorted Tubes, Liebig’s 
form, 
1432. 1 Set 3-lipped Beakers, 
1421. 1 “ of 6 “0 to 6, plain, 
2276. doz. Flasks, assorted, 2 to 6 oz., 
3407. 2 Watch Glasses, 2 in., 
1755. 1 Hoffman’s Glass Clamp, 
2575. 1 Blow-pipe Knife, 
1690. 1 Small R. Berlin Casserole,No. 1, 
1687. 1 Semi “ “ “ No. L 224 
E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE 
apparatus.— Continued. 
2233. 1 Evolution Flask, with Delivery 
Tube, 
3031. 1 Clark’s Retort, 
3378. i lb. assorted Glass Tubing, 
2322. 1 Glass Funnel, ea. 2, 2| &3in, 
1864. 2 Glass Covers, each 3 and 4 in., 
2321. 1 Nest of German Funnels, 
3216. 1 Small Funnel Holder, 
2251. 2 Porcelain Filter Rings, 
2255. 1 Pack. Cut Filters, 4, 5, 6 in., 
1 Wash Bottle, Berzelius’s Form, 
2906. 2 Plain Pipettes, 
1 Hare’s Foot, 
3226, 3271. 1 Test Tube Rack, fitted, 
3274. 1 Wooden Test Tube Holder, 
1575. 2 Test Tube Brushes, 
3267. 6 sheets Assorted Test Papers, 
1 Small Collection of Test Metals, 
2210. 3 Smallest size Royal Berlin Evap- 
orating Dishes, 00, 0, 1, 
3164. | doz. 6-in. Glass Stirrers, 
3008. 1 Box Blow-pipe Reagents. 
The Chemical Tests, to accompany the above Apparotus, will be packed to 
order, according to the number of bottles required. 
3518.—Apparatus, suitable to be dealt out to Students in Col- 
leges; each set nicely packed in dovetailed boxes, with sliding 
covers. Price, $15.00 
2498. 1 Glass Spirit Lamp, 4 oz., 
2615. | yd. Wick, in paper box, 
3233. 1 Small Retort Stand, 
3351. 1 Iron Wire Triangle, 
3066. 1 Sand Bath, 
3414. 1 Porcelain Water Bath, 6 in., 
1484. 1 Jeweller’s Blow-pipe, 
2935. 1 Small piece Blow-pipe Foil, 
2938. 1 Piece 6-in. “ Wire, 
1885. 1 Porcelain Crucible, each 1 and 
U in., 
3321. 1 pr. Japanned Crucible Tongs, 
31-25. 1 4-in. Spatula, 
2827. 1 Porcelain Mortar, 2| in., 
1418. 1 Small Set B aker Glasses, 0 to 4, 
2221. 1 Nest Porcelain Evaporators, 
2276. 2 4-oz. Flasks, 
2278. 1 16 oz. Flask, Round Bottom, 
3406. 1 Pint Wash Bottle, 
3104. 4 Glass Slides, 
3378. | lb. Glass Tubing, | in bore, 
2279. 1 Flask for Sulphur’d Hydrogen, 
3408. 3 Watch Glasses, 2 in., 
3164. 2 Stirring Rods, 6 “ 
3226, 3371. 1 Test Tube Rack, filled, 
3267. 6 Sheets, each kind, Test Papers, 
3387. 1 ft. Rubber Tubing, | in., 
2318. 1 2-in. Bohemian Funnel, 
2317. 1 American “ 3 in., 
2255. 1 Pack Cut Filters, 3 “ 
“ x a a 5 « 
2237. 1 Triangular File, 
2236. 1 Round “ 
3519.—Apparatus, for performing most of the experiments 
described in Stockhardt’s Chemistry. Price, $15.00 
3033. 1 4-oz. Retort, 
2276. 1 Flask, each 2, 4, 6 and 8 oz., 
1416. 1 Set of 4 small Beakers, 
2281. 1 Flask, round bottom, each 4 
and 6 oz., 
2498. 1 Small Spirit Lamp, 
2615. 1 yd. Wick, 
1483. 1 Black’s Blow-pipe, 
1502. 1 doz. ass’d 4-oz. Bottles, stop- 
pered and corked, 
2938, 2935. 1 Small piece of Platinum 
Wire and Foil, 
2829. 1 Porcelain Mortar, 00, 
1644. 1 Cylinder, 
3422. 1 ft. Wire Gauze, 
3274. 1 Test Tube Holder, 
3226, 3371. 1 Test Tube Rack, filled, 
2331. 1 Funnel Tube, 
1885. 1 Porcelain Crucible, 
3262. 1 4-oz. Test Glass, 
2322. 1 Funnel, 11 and 2 in., 
2255. 1 Pack Filters, each 3 and 4 in., 
3104. 6 Glass Slides, 
2634. 1 doz, Blue Litmus Paper, 
1 Piece Pure Zinc, 
3164. 2 Glass Stirrers, each 3 and 6 in., 
2221. 1 Semi-Porcelain Evaporator, 
shallow, 3£ in., 
3029. 1 Glass Oxygen Retort, 2 bulbs, 
6 oz., 
2233. 1 Flask, with Deli v’y Tube, 16 oz, 
1441. 1 Beehive Shelf, 
2236. 1 Round File, with handle, 
3378. | lb. Assorted Glass Tubing, 
3353. 1 Brass Tripod, 
3147. 1 Iron Spoon, 
3233. 1 Retort Stand, with 2 Rings, 
3066. 1 Small Sand Bath, 4 in., 
1715. 1 Chloride of Calcium Tube, 
1356. 3 Arsenic Tubes, ass’d. 
The above apparatus can be enlarged at the pleasure of the purchaser. A 
set of chemical substances, accompanying the above, will also be furnished, 
if desired, at reasonable rates. OF CHEMICAL AND PHYSICAL APPARATUS. 
225 
3520.—Apparatus, for Analysis of Urine, to accompany Man- 
ual, by Dr. Austin Flint, Jr. Price, $40.00 
a 1 Urinometer, 6 oz., 
Z> 1 Thermometer, 1 oz., graduated in 
drachms, 
c Graduated Glasses, 1 drachm, 
d 4 Conical Glasses, with Porcelain 
Covers, 
e Porcelain Evaporating Dishes and 
Watch Glasses, 
/Test Tube Stands, with Test Tubes, 
g 3 Funnels and Filtering Paper, 
A 3 Flasks and Wire Gauze, 
i Bunsen’s Burner, Rubber Tubing, 
etc., or Alcohol Lamp, 
APPARATUS. 
k Burette, graduated in grains, 
I 200-Grain Measure, 
m Tube, graduated in cubic inches, 
with vessel in which it can be 
inverted, 
n Rings and Clamp for Graduated 
Tube, 
o Stirring Rods and Drop Tubes, 
p Swabs and Brushes, for cleaning,. 
q Platinum Spoon for Calculi, 
r Blow-pipe, 
8 Colored Papers, gummed for record- 
ing the color of specimens. 
chemicals.—Case of Reagents containing: 
1 Nitric Acid, 
2 Hydrochloric Acid, 
3 Acetic “ 
4 Nitros-Nitric “ 
5 Nitrate of Silver, in solution, 9-58 
grains in an ounce, 
6 Sulphate of Copper, in ditto, 94-73 
grains in an ounce, 
7 Neutral Tartrate of Potash solut’n, 
378-91 grains in an ounce, 
8 Sol. of Soda, Specific Gravity,. 1? 12, 
9 Liquor, Potassa, 
10 “ Ammonia, 
11 Ether, 
12 Mercury, 
13 Solution of Hypochlorite Soda, 
14 Ditto, Chloride of Sodium, sat’rat’d, 
15 Test Papers, 
16 German Yeast. 
EXTRA APPARATUS AND CHEMICALS. 
a Hydrometer, of Baume’s, for Li- 
quids heavier than Water, 
Z> 1000-gr. 500-gr. and 100-gr. Specific 
Gravity Bottles, 
c Water Bath, 
d “ Oven and Swedish Filters, 
e 2 Wash Bottles and 3 Precipitating 
Glasses, 
1 Sesqui Chloride of Iron; 9’33 grs. 
of Iron by Hydrogen dissolved 
in Hydrochloric with a little 
Nitric Acid, evaporated to dry- 
ness and dissolved in 6 fluid ozs. 
of Water, 
f A Balance at least delicate enough 
to turn with of a grain, 
g Graduated Solution of Chloride of 
Barium, 36 6 grains, in six fluid 
ozs. of Water, for Quantitative 
Analysis for the Sulphates, 
h 3 Separate Solutions for Quantita- 
tive Analysis for Phosph’ic Acid. 
2.400-grs. of Acetate of Soda, and 
800-grs. of Acetate Acid, in 6 
fluid ozs. of Water. 
3.12-grs. of Ferrocyanide of Potas- 
sium, dissolved in 6 fluid ozs. of 
Water. 
3521.—Apparatus, for Assay. 
1369. Assay Balance, No. 1 $50.00 
1370. Ditto, ditto, No. 2 72.00 
1371. Ditto, ditto, No. 3 72.00 
1372. Ditto, ditto, ditto, with Apparatus for Rider 78.00 
3417 to 3433. Weights, various prices. 
3522. Basin for Washing Gold 1.50 
1462. Assay Bellows . 75 to 1.00 
1486 to 1490. Assay Blow-pipes $2.00 to 4.00 
1581. Assay Brushes, for cleaning Button.... .50 
1712. Ditto, Chisels, for clipping Ingots .50 
1876. Ditto, Crucibles ...Per doz. 1.00 
1877. Ditto, ditto, Iron “ 2.50 
1878. Ditto, ditto, French, Beaufay 05 to .08 
1879. Ditto, ditto, Covers 50 to .75 
1870. Ditto, Glass Covers 50 to .75 226 
E. B. benjamin’s descriptive catalogue. 
apparatus.—Continued. 
1882. Assay Crucibles, Plumbago $.20 to 1.63 
1893. Ditto, ditto, Platinum Per gramme. .40 to .45 
1895. Ditto, ditto, Metallurgists .20 
1896 to 1907. Ditto, ditto, Sand 05 to .35 
1908. Ditto, flitto, Roasting .75 
1911. Ditto, ditto, Supports .60 
1919. Bone Ash Cupels Per doz. .35 to 2.25 
1920. Cupel Holders 1.00 
1921. Ditto, Moulds 2.50 to 4.50 
2007. Iron Dippers 40 to .50 
2008. Tin Dippers 60 to .80 
2016. Roasting Dishes Per doz. .75 to 5.00 
2217. Evaporating Dishes Per set. 2.75 
2219. Ditto, ditto u . 2.50 
2236, ’37. Files 18 to .50 
2273. Parting Flasks Per doz. 1.50 
2274, 2275. Assay Flasks .50 
2296. Forceps, for crushing the Button - 1.75 
2358. Furnaces, Kent’s 21.00 
2360. Ditto, Cupelling 15 to 35.00 
2361. Ditto, Hibb’s Patent 50.00 
2365. Ditto, Griffin’s Gas 20.00 
2368. Ditto, Chilton’s 40.00 
2448. Hammers 100 
2451. Ditto 1.75 
2453. Ditto 2.50 
2838. Ingot Moulds 1.50 to 2.50 
2822. Iron Mortars 40 to 4.75 
2532. Ivory Scale, Harcourt’s 5.00 
2621. Lenses or Glasses, Magnifying 2.50 
2623. Ditto, ditto, Stanhope’s 2.00to2.?0 
2688. Mineralogists’ Slates, for trying the Streak of Minerals 40 to .50 
2841 to 2847. Muffles 30 to 2.50 
3008, 3009. Reagent Cases. 2.50 to 4.00 
3087. Scoops, for Assay 1.50 
3085. Scorifier Holders 1.50 
2836. Ditto, Moulds 5.00 to 7.00 
3086. Scorifying Moulds 1.09 
3180. Stop-cocks of Silver, for Assay 30.00 
2297. Tongs, for holding hot Tubes 1.00 
3319 to 3320. Ditto, Coal 1.00 to 1.75 
3321 to 3328. Ditto, Crucible 50 to 6.50 
3333 to 3336. Ditto, Cupelle - 1.50to2.75 
3337. Ditto, Scorifier 1.25 
Apparatus for General Use in Analysis: Spirit Lamps, Furnaces, Flasks, 
Beakers, Test Glasses, Baths, Filtering Apparatus, Evaporating Basins, Re- 
torts and Receivers, Hydrometers, Stills, Gas Bottles, and other Analytical 
Apparatus, will be found under their respective heads in this work. 
3523.—Apparatus, for Assay before the Blow-pipe. 
Lingke’s Freiburg complete set of Blow-pipe Apparatus, for 
Qualitative and Quantitative Analysis, in German silver, comprising 
every article used in blow-piping, with reagents of the most choice 
kind, put up in extra fine, close-stoppered bottles, each bottle cov- 
ered with an extra rubber cap to preserve their purity, with accurate 
Specific Gravity Balance, enclosed in a glass and mahogany case, and 
each department packed in highly polished mahogany cases, and the 
apparatus and reagents again enclosed in an elegant mahogany case, 
with lock and key, and the whole apparatus and scales enveloped in 
leather envelope straps and handles, for hand transportation. 3275.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
227 
3524. —Apparatus, the same as the foregoing, in Brass. $260.00 
3525. —Ditto, Lingke’s, for Gold and Silver Assay. 200.00 
The above are all manufactured to order, by Dr. Lingke, and 
have his stamp on, and are well known to be the most complete ap- 
paratus of the kind to be found anywhere. The Balances are 
very celebrated for their delicateness and accuracy. 
1370, 1372. Balances $72.00 to $78.00 
1482 to 1497. Blow-pipes, various 50 to 12.00 
2932. Ditto, Tips, Brass and Platinum 10 to 1.50 
2568. Ditto, Jets , .25 
1344 to 1346. Ditto, Anvils . 75 to 1.00 
1581. Button Brush .50 
1694. Carbon Cells, for fusions .50 
1672. Blow-pipe Capsules Perdoz. 1.25 
1673. Ditto, ditto Each. .20 
1674. Ditto, ditto Perdoz. 1.20 
1675. Ditto, ditto - “ 1.75 
1701. Charcoal, 4 pieces for .25 
1702. Charcoal Borers, Spatula Handles 30 to .40 
1703. Ditto, ditto, 4 points, Cocoa Handles 50 to .75 
1704. Ditto, ditto, 8 points, “ 1.00 to 1.25 
1705. Charcoal Holders 2.75 
1706. 1707. Ditto, Saws ...................................50 to .75 
1708. Ditto, Spatulas .50 
1711. Ditto, Sticks 50 to .60 
1709, 1710. Ditto, Tongs 75 to 1.25 
1712. Chisels for clipping Ingots .50 
3526. Clay Cylinder .25 
1800. Compasses 2.50 
1806. Ditto 15.00 
1870. Covers of Glass for covering Choice Specimens 50 to .75 
3527. Crucibles, Iron, with Cover. 
1919. Cupels, Bone Ash Perdoz. .35 to 3.25 
Bone Ash, for Cupels, according to quality. See Chemicals.. .30 to .70 
1920. Cupel Holders 1.00 
2941. Cutting Pliers 1.25 
2282. Blow-pipe Flasks Perdoz. .60 
2291 to 2312. Ditto, Forceps 25 to 2.50 
3528. Funnel Holders, Plattner’s .25 
1346. Hammers, French, with two ends, one flat for crushing, and 
one round end for pulverizing, with round anvil, having 
one side Hat for crushing, and the other side with concave 
center for pulverizing, and provided with a brass circular 
cap to retain the powder in the mortar, finely finished, with 
German silver tip to the handle 10.00 
2446. Ditto, Plattner’s - .75 
2447. Ditto, Freiburg 1.00 
2448. ’49. Hammers - 1.00 to 1.25 
2451 to 2453. Ditto, heavier 1.75 to 2.50 
3529. Hare’s Foot .10 
2457. Holders for Platinum, Spoons and Wire .60 
2575. Knives, Plattner’s .75 
2576. Ditto, for Glass Tubing .50 
2604. Lamp, Plattner’s, 3.00 
2596 to 2601. Spirit Lamps 50 to 1.00 
2659. Lead Measures .50 
2621 to 2628. Lenses 1.00 to 3.50 
2646. Magnets, Bar 1.00 
2688. Mineralogist’s Slates, for trying the Streak of Minerals 40 to .50 
2690. Mixers, or Mixing Capsules, brass 50 to LOO 
2691. Ditto, ditto, ditto, horn .25 228 
E. b. benjamin’s descriptive catalogue 
apparatus.—Continued. 
2818. Mortars, Agate $1.90 to 30.00 
1998, ’99. Ditto, Diamond, of steel . 5.00 to 7 50 
2822. Ditto, Iron 40 to 4.75 
2831. Ditto, Steel, highly polished 2.00 to 5.00 
2832. Moulds, Boxwood, for Cartridge Cases .20 
1909. Ditto, ditto, for Charcoal Basins .75 
1910. Ditto, Brass, for Clay Crucibles 4.25 
1921. Ditto, ditto, for making Cupels 2.50to4.50 
2836. Ditto, ditto, ditto, Scorifier 5.00 to 7.00 
2838. Ditto, Iron, for Gold and Silver Bars 1.50 to 2.50 
1922. Ditto, Steel, for Cupels, with Supports 2.75 
2837. Ditto, Wood, for forming Charcoal pieces, oblong 1.25 
3530. Ditto, ditto, ditto, ditto, blocks, square. 
2813. Mouth-Pieces of Horn .25 
2814. Ditto, ditto, Ivory .50 
1580. Pencils, Camels’ Hair, for taking up line dust from the Bal- 
ance Pan, etc .25 
Platinum Foil and Wire Pei- grain. 
3008. Reagent Cases, with turned Caps, small 2.50 
3009. Ditto, ditto, with space for Blow-pipe, Forceps and Platinum 
Box 4.00 
3111,’12. Reagent Chests 10.00 to 12.00 
3046. Roasts, Plattner’s 2.00 
2658. Scales, Harcourt’s, for Measuring the Button 5.00 
3080. Scissors 50 to 1.00 
3099. Sieves, Box, Griffin’s 2.50 
3100. Ditto, Plattner’s, Brass .50 
3117. Spatulas, Horn 10 to .40 
3124. Ditto, Steel, small .40 
3154, ’55. Spoons, Horn 15 to .50 
3147. Ditto, Iron, small and large. 
3113. Ditto, Ivory, Plattner’s, small and large. 
2928. Ditto, Platinum. 
3267, Test Papers Per sheet. .05 
3117. Tin Foil Per square ft. .15 
3349. Triangles, Plattner’s .25 
1357. Tubes, Bulbs, for subliming Per doz. .75 
3417 to 3433. Weights, various prices. 
3455. Wire, Copper Per lb. 2.00 
Files, Flasks, Funnels, and other Apparatus. See appropriate apparatus 
under their respective heads. 
3531.—Set of Instruments, for Blow-pipe Analysis. $45.00 
1 Brass Blow-pipe, with 2 Platinum 
Tips, 
1 Ditto, Blow-pipe Lamp, 
1 Stand for Evaporating Dish, Trian- 
gles, etc., 
1 Funnel Holder and Chimney, 
1 Platinum Pointed Forceps, 
1 Brass Forceps, 
1 Steel Forceps, for Lamp, 
1 Pair Cutting Nippers, 
1 “ Flat Forceps, 
1 Platinum Wire Holder, with 6 Wires, 
1 Hammer, 
1 Anvil, 
1 Steel Mortar, 
1 Agate ditto, 2| in. in diameter, 
1 Charcoal Borer, club-shaped, 
1 “ “ four-cornered, 
1 “ “ with Spatula, 
I Bar Magnet, 
1 Magnifying Glass, with 2 Lenses, 
1 Alcohol Lamp, with Brass Cover, 
2 Ivory Spoons, 
1 Charcoal Saw, 
1 Mattrass Holder, 
1 Knife, 
1 Assay Button Brash, 
2 Mixing Capsules, 1 brass, 1 horn, 
1 Steel Mixing Spatula, 
2 Brushes, 
1 Box for Soda Papers, 
1 Wooden Form for Paper Cylinders, 
1 yd. Lamp Wick, 
1 Cupel Holder, with 2 Cupel Cups 
and 1 Mould, 
1 Charcoal Holder, with Platinum 
Ring and Screw, 
1 Test Lead Measure, OF CHEMICAL AND PHYSICAL APPARATUS. 
229 
apparatus.—Continued. 
1 Box for Clay Crucibles, 
1 pair Lamp Scissors, 
1 Wash Bottle, 
1 Dropping Bottle, 
3 Porcelain Dishes, 3 sizes, 
2 “ Cups, for Gold Assay, 
2 Watch Glasses, 
6 Wooden Boxes, for Reagents, 
12 Bottles with Glass Stoppers, flat, 
1 Charcoal Holder Stand, 
1 Coal Tray, 
1 Dirt “ 
1 Clay Cylinder, 
2 Iron Rings, 
1 Hare’s Foot. 
3532.—Set of Apparatus, for Quantitative Blow-pipe Use. 
$15.00 
1 pair Flat Pincers, 
1 Assay Button Brush, 
2 Mixing Capsules, 1 Brass, 1 Horn, 
1 Cupel Stand, with 2 Cupel Cupsand 
1 Mould, 
1 Charcoal Borer, club-shaped, 
1 “ “ four-cornered, 
1 “ “ with Spatula, 
2 Brushes, 1 large, 1 small, 
1 Box for Soda Papers, 
1 Wooden Form for Paper Cylinders, 
1 Test Lead Measure, 
1 Charcoal Holder, with Platinum 
Ring and Screw, 
2 Ivory Spoons, 
2 Porcelain Cups, for Gold Assay, 
1 Box for Clay Crucibles, 
1 yd. Lamp Wick, 
1 Steel Mortar, 
1 Knife, 
1 pair Lamp Scissors, 
1 Wash Bottle, 
12 Glass Bottles, with Flat Stoppers. 
3533.—Apparatus, for illustrating Hinrich’s Elements of 
Physics. 
For exclusive use in the Lectures (see School Laboratory, 1871, p.,66), the 
teacher should procure as much as possible of the larger apparatus and finer 
specimens of crystals, minerals, etc., mentioned in the work. No general direc- 
tions can here be given; the wants and means of the school will have to be 
consulted in making out the order. The teacher ought, however, always to 
give the precedence to the apparatus to be used by the students in the Labor- 
atory Practice, if the means of the school do not permit the purchase of this 
necessary apparatus and the more costly apparatus also This simple appar- 
atus required for the demonstration of the Fundamental Laws of Electricity 
(see 341 to 372), is more important to the student, and therefore to the school, 
than the more expensive and more powerful machines (373 to 380); that is, the 
simple apparatus for students’ experiments must be obtained first; the fine 
electrical machines and batteries should thereafter be procured as soon as pos- 
sible. The necessary apparatus for Student’s Laboratory Practice is divided 
into two distinct groups, viz.: I. Apparatus placed at convenient points in 
the Laboratory, to be used by students in general; II. Sets of Apparatus, put 
up in a separate tray, of wood or pasteboard, sufficient to demonstrate any 
given article in the book. (See article 492 in the Elements of Physics.) 
Every piece of apparatus should be labeled. (See El. Phys , 495-’96.) Be- 
low, the principal fixed apparatus for general use is enumerated. A few sets 
for the demonstration of separate articles have been added, simply to serve as 
examples. A full enumeration of all the sets required would demand too 
much space. 
7. Meter Rods, of wood or brass, sev- 
eral, labeled No. 1, No. 2, etc. 
Decimeter Rules, of card paper or 
brass; a great number • to be 
distributed with the sets (see 
II); also called Centimeter 
Scale 
Meter Tape, 10 meters long. 
10. A Twenty-flve Cubic Centimeter 
Flask. 
A 100 ditto. 
I.—APPARATUS FOR GENERAL USE. 
11. Graduated Cylinders, several, viz: 
100 c.c. divided to 1.0 c.c. 
50 “ “ “ 0.5 “ 
10 “ “ “01 “ 
Of the last a considerable number 
is required for the several sets 
II. 
15-21. Balances and Weights: 
a Druggists’ Counter Scales—set 
of Weights 0.1 gr. to 1000 grms., 
mainly for work in Chapter II. 230 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
apparatus for hinrich’s physics.—Continued. 
b Druggists’ Prescription Scales— 
set of Weights 0.1 to 50 grms. 
c Ditto, with Weights 0.01 to 50 
grms.; with Equipoise for one 
scale-pan, for use as Hydrostatic 
Balance. See 123. 
(Larger Laboratories require sev- 
eral of each of these three bal- 
ances.) 
35. Protractors, brass, horn; a con- 
siderable number, both for sets 
in § vi, Chap. HI, and § iv Chap. 
I. 
36. Goniometers; a considerable num- 
ber, for sets in § vi, Chap. HI. 
37. A Good Pendulum Clock. 
38. A Simple Second Pendulum ; me- 
tallic bob and double iron wire. 
(School Lab., 1871, plate 3, fig. 
6, upper pendulum.) 
131. Barometer Scale, English inches, 
to 0.01 inch. Convert to mm., 
by Table, p. 167. 
136. Aspirator. 
148. Mortars, of Porcelain and Agate. 
259. Astronomical Telescopes, Achro- 
matic. 
a Common, power 5 to 10. 
b* Larger, mounted (best equa- 
torially), power 16 to 64 ; objec- 
tive 6 to 10 cm. diameter. 
277. Opera Glass. 
281 Microscopes. 
a Common, imported, cost about 
$20.00. 
b* Large, bulbs, more powerful. 
286. Micrometer, on glass, 1 mm., in 
50 parts, 
288*. Microscope, with Polarizing Ap- 
paratus, for observation of mi- 
croscopic crystals (290). 
301. Horse-shoe Magnet, strong, with 
Keeper. 
323. Lodestone, in box, with iron fil- 
ings and nails. 
327. Compass. 
Each set, as far as possible, put up in a separate tray; all pieces labeled. 
(See article 495). 
II.—SEPARATE SETS. 
12. Volume of One Drop of Water— 
1. Tube Pipette; 2. Graduated 
Cylinder, 10 c.c. to 0.1; 3. Bot- 
tle for Distilled Water. 
13. Test Graduated Cylinder — 1. 
Graduated Cylinder, 10 c.c. to 
0.1; 2. A One-cubic Centimeter 
Pipette; 3. Bottle for Water. 
14. Mensuration of Volume of Ves- 
sels—1. Graduated Cylinder, 50 
c.c. to 0.5; 2-3. Two Test Tubes; 
4. Beaker; 5. Flask ; 6. Porce- 
lain Dish; 7. Centimeter Scale. 
24. Determine Weight of U. S. Coins 
—1. Half Dollar; 2. Quarter 
Dollar; 3. Dime ; 4. Five Cents, 
Nickel; 5. One Cent, Copper. 
As 24 b, c, etc., similar Lots of 
Foreign Coin may be put up 
separately. 
28. Specific Gravity of Rectangular 
Solids—1. Tablet of Wood; 
2. Prism of Wood; 3. Rec- 
tangular Block of Cork; 4. Rec- 
tangular Piece of Lead; 5. 
Sandstone; 6. Limestone; 7. 
Centimeter Scale. 
29. Specific Gravity of Liquids—1. 
Graduated Cylinder, 10 c.c. to 
0.1; Bottles contain’g : 2.Water; 
3. Alcohol; 4. Gasolene. 
30a. Specific Gravity of Solids Insolu- 
ble in Water—1. Graduated Cyl- 
inder; 2. Bottle with Water; 
Specimen Tubes with Fragments 
of, 3. Galenite ; 4. Gypsum; 
5. Iron (nails); 6. Lead (shot); 
7. Sulphur; 8. Anthracite. 
306. Specific Gravity of Solids Solu- 
ble in Water—1. Graduated 
Cylinder; 2. Bottle with Gaso- 
lene ; Specimen Tubes with: 
3. Crystals of Nitre; 4. Crys- 
tals of Blue Vitriol: 5. Crystals 
of Alum. 
3534.—Set of Apparatus, Quantitative, to he aeait out to 
each Student, as recommended by the School of Mines, Columbia 
College, New York City. $47.50 
2 Bunsen’s Burners, 
2 Rubber Tubes for ditto, 2 ft. each, 
2 Iron Ring Stands, 
4 Filter Stands, 
1 Test Tube Rack, 
12 Test Tubes, 4 in., 
12 “ 6 “ 
2 Test Tubes, 7 in., 
1 “ 8 “ 
1 Nest of 6 Beakers, plain, 
3 “ “ “ lipped, 
3 Funnels, 1| in., 
5 “ 2f “ 
2 “ 3i ‘‘ OF CHEMICAL AND PHYSICAL APPARATUS. 
231 
students’ quantitative apparatus.—Continued. 
1 Funnel, 4 in., 
1 “ 5 “ 
1 Wash Bottle, pint, 
1 “ 8 oz., 
1 “ 4 oz., 
3 Convex Covers, 3 in., 
3 “ 4 “ 
3 “ 5 “ 
3 Ground Glass Covers, 3 in., 
3 a « 4< 4 44 
3 “ “ “ 5 “ 
6 Watch Glasses, 
2 Chloride of Calcium Tubes, 
1 Flask, 1 oz , for Carbonic Acid, 
1 doz. Specimen Tubes, 3 in., 
2 Dessicators, 
2 Glass Tubes,. 
2 Glass Rods, 
3 Porcelain Crucibles, 1J in., 
2 a “ ij a 
1 Nest of 6 Evaporating Dishes, 
2 Casseroles, 4 in., 
1 Porcelain Mortar, 4| in., 
1 Blow-pipe, 
2 ft Platinum Wire, 
2 Platinum Foils, 
1 File, 
2 Steel Forceps, 
1 oz. Bichloride of Platinum, Solu- 
tion, 
6 “ Nitrate of Silver, 
2 Bottles for ditto, 
2 “ corked, 10 oz., 
2 “ “ 8 “ 
2 “ “4 “ 
9 44 44 4 u 
2 Sand Baths, 
4 Wire Triangles, 
2 Towels, 
1 Scissors, 
1 Test Tube Brush, 
1 Horn Spatula, 4 in., 
1 Package Cut Filters, 3 in., 
1 “ “ 4 U 
6 Sheets Swedish Paper, 
1 Glazed lt 
1 Set Filter Patterns, 
1 ft Rubber Tubing, in., 
2 Pieces Wire Gauze, 
1 Copper Water Bath, 
1 Rat-Tail File, 
1 Watch Glass Clip. 
3535.—Set of Apparatus, Qualitative, to be dealt out to each 
Student as recommended by the School of Mines, Columbia Col- 
lege, New York. $24.00 
1 Bunsen’s Burner, 
1 Rubber Tube for ditto, 2 feet, 
1 Iron Ring Stand, 
2 Filter Stands, 
2 Test Tube Racks, 
24 Test Tubes, 4 in., 
24 “ 6 “ 
2 « 7 “ 
1 “ 8 “ 
1 Nest of G Beakers, plain, 
2 Funnels, 1| in., 
2 “ 2J “ 
1 Wash Bottle, pint, 
6 Watch Glasses, 
1 Flask, 4 oz., 
2 Glass Tubes, 
1 Glass Rod, 
2 Porcelain Crucibles, Ff in., 
2 “ “ If “ 
1 Nest of 6 Evaporating Dishes, 
1 Porcelain Mortar, 4| in., 
1 Blow-pipe, 
1 Foot Platinum Wire, 
1 Platinum Foil, 
1 File, 
1 Steel Forceps, 
1 oz. Bichloride of Platinum, Solut’n, 
6 “ Nitrate of Silver, “ 
2 Bottles for ditto, 
2 corked, 1 oz., 
2 Saud Baths, 
2 Wire Triangles,. 
1 Towel, 
1 Scissors, 
1 Test Tube Brush, 
1 Horn Spatula, 4 in., 
2 Packages Cut Filters, 3 in., 
2 « u 4 .. 
1 Foot Rubber Tubing, in., 
1 Piece Wire Gauze, 
1 Deflagrating Cup, 
1 Blue Glass. 232 
-E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE 
HOFFMAN’S APPARATUS. 
3536 
3537 
3538 
3539 
3540 
3541 
3542 
3543 
Apparatus which may be Used to Illustrate Hoffman’s Modern 
Chemistry. Most of these Forms are constantly on hand, and 
all the Joints are carefully sealed and Stop-cocks ground in 
the most careful manner. 
3536. Hoffman’s Glass U Tubes, 16 inches (a), with plain bent 
Tube sealed in below $1.00 
3537. Ditto, ditto, ditto, ditto, 16 inches (&), with Platinum Electrodes 
sealed into the top of one of the Tubes $1.25 
3538. Ditto, ditto, ditto, ditto, 16 inches (c), with plain bent and inlet- 
tubes. $1.00 
3539. Ditto, ditto, ditto, ditto, 16 inches (d), with Pla- 
tinum Electrodes sealed into the top of oue of the Limbs. 
$1 50 
3540. Ditto, ditto, ditto, ditto, 16 inches (a), with deliv- 
ery-cock at the base of oue of the Tubes $2.00 
3541. Ditto, ditto, ditto, ditto, 16 inches (&), with deliv- 
ery-cock at the base of one of the Tubes, and Platinum Elec- 
trodes sealed into one of the Limbs $2.50 
354*2. Ditto, ditto, ditto, ditto, 16 inches (c), with glass 
outlet-cock and waste-cock at the top of oue of the Limbs 
$3.00 
3544 
3546 
3549 
3543. Ditto, ditto, ditto, ditto, 16 inches (d), with glass outlet-cock and 
waste-cock at the top of one of the Limbs, and Platinum Electrodes sealed 
into one of the Limbs $4 00 
3544. Hoffman’s Lecture Eudiometer, mounted on stand, com- 
plete $15.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
233 
3545. Hofftnan ’s Apparatus, for Recomposition of 
Water, consisting of three Eudiometers, mounted on stand, 
each provided with a Delivery Cock of glass, and two of them 
with cocks in the top $15 00 
3546. Ditto, ditto, for the Decomposition of Hydro- 
chloric Acid in Hydrogen and Chlorine; of Water into Hy- 
drogen and Oxygen, and of Ammonia into Hydrogen and 
Hoffman’s apparatus.—Continued. 
3550 
3554 
3556 
Nitrogen, consisting of a V-shaped Tube, with Platinum Electrodes, mounted 
on stand $6.00 
3547. Ditto, ditto, ditto, ditto, unmounted 2.50 
3548. Ditto, ditto, for the Illustration that the Gas evolved from Hydro- 
chloric Acid by the Electric Current contains equal volumes of Chlorine and 
Hydrogen, unmounted $3.00 
3549. Apparatus, for Demonstration of Oxygen, Hydrogen and Water, 
consisting of U Tube, mounted on stand, supplied with Stop-cock Delivery 
Cock and Glass Worm, complete $15.00 
3550. Ditto, for ascertaining the exact proportions of Hydrogen and Ni- 
trogen in Ammonia, unmounted $3.00 
3551. Metallic Supports for the above, and other similar apparatus, 
each $4.00 
3552. Hoffman’s for the Demonstration of Proportion, 
ate volumes of Water, Hydrochloric Acid and Ammonia, consisting of U Tube 
with Stop-cocks at top, Pinch-cock at bottom, with Platina Electrodes, mount- 
ed on stand, No. 913 _ $10.09 
3553. Ditto, ditto, for the Determination of Chlorine Water, consisting of 
U Tube, with fine ground glass Stopper at the top, and having also Platinum 
Electrodes on arm, No. 259, mounted $7.00 
3554. Ditto, ditto, for the Testing of Sulphuric Acid, consisting of a long 
glass vessel or bottle, into the neck of which is ground stoppered with fine 
emery, a Glass Tube running about half way down the bottle, and bent at 
right angles at the top. Out of the shoulder of this bottle projects a Tube, 
having two fine ground glass Stop-cocks, with a bulb between them; the 
whole is firmly fixed by a cork into a strong cylindrical glass receptacle, hav- 
ing a flat bottom $7.50 
3555. Ditto, ditto, Four Burners, mounted on one stand, each Burner 
about 2 inches apart $7.50 
1755. Hoffman’s Watch Glass Clamps, each 20 
3556. Hoffman’s Apparatus, for the Decomposition of Water, con- 
sisting of three Way Tubes, with two glass Stop-cocks for delivery and one 
large bulb in the Supply Tube, with Platinum Electrodes sealed in and com- 
municating with the strips of Platinum Foil, unmounted $6 50 
3557. Ditto, ditto, ditto, mounted $10.00 
3558. Ditto, ditto, with Charcoal Points for the Electrolysis of Hydro- 
chloric Acid and Ammonia, mounted $15.00 234 
E. B. benjamin’s DESCRIPTIVE CATALOGUE. 
Hoffman’s apparatus.—Continued. 
3559 
3559. Apparatus, for Volumetric Electrolysis of Carbonic Acid Gas, Wa- 
ter and Ammonia, through one Electric current, consisting of two Three Way 
Tubes with two glass Stop-cocks with Carbon Electrodes and one Three Way 
Water Decomposing Apparatus, each separately mounted, with special Bind- 
ing Screws. All the above having largeglass Bulbs-..$30.00 
3560. Ditto, ditto, for the Arrangement of Combustion Experiments, con- 
sisting of a large glass Tube drawn at the upper end and bent at right angles, 
into which is secured a glass Stop-cock, connecting with a rubber Tube deliv- 
ery into the lower or open end is fitted, by means of a rubber stopper, a tube 
of medium width, into which is secured a glass Stop-cock tube with a burner 
of Platinum Foil in the end. There is also a blowing tube, bent at right an- 
gles, fitted into the same rubber stopper$10.00 
3561. Hoffman’s Apparatus, for showing the principle of Carre’s Ice 
Freezer, by producing ice from water by the employment of Ammonia.$15.00 
3562. Ditto ditto, for the condensation of the Elementary Gases, Hydrogen 
and Oxygen, in water, at boiling temperature, as well as for Eudiometric An- 
alysis of the Fire Damp and the oil forming gases (as per Hoffman’s Modern 
Chemistry, Fourth Edition; also per Records of the German Chemical Society, 
2d Vol., p. 245), consisting of an Iron Stand with Toothed Bar, in which is 
secured a long glass tube, supplied with Platinum Electrodes, and fastened 
in a brass support, which can be easily moved up and down$30.00 
3563. Ditto, ditto, for burning Sulphur by the Electric Current, demon- 
strating equal volu es of Oxygen and Carbonic Acid Gas, also Sulphurous 
Acid formed from it; consisting of an U shaped tube, with a large bulb near 
the top, which is stoppered with a two-holed cork, and provided with a Waste- 
cock. In each hole in the cork is a wire fastened, one of which is provided 
with a small spoon to receive Carbon, or Sulphur. The upper ends of the 
wire are supplied with Binding Screws. (See illustration, p. 236.)$12.50 
3564. Ditto, ditto, to observe the ratio of volume of Simple and Com- 
pound Gases under the influence of pressure and changes in the temperature 
(Per Hoffman’s introduction to his work on Modern Chemistry, and Records 
of the German Chemical Society, 2d Vol., p. 257), consisting of a long U 
formed glass tube, ending in four vertical branch tubes in the shape oi a fork 
and supplied with glass cocks. The apparatus is carefully held in place by a 
nicely constructed support, which sustains four glass cylinders, fastened in OF CHEMICAL AND PH ISICAL APPARATUS. 
235 
iioffman’s apparatus.—Continued. 
place with metal spring caps, which envelope each branch tube. These caps 
are so arranged that they may be connected with a Steam-boiler by means of. 
a metal pipe-$50.00 
3563 
3562 
3364 
3565. Hoffman’s Steam-Tight Determination Apparatus, 
consisting of a Barometer Tube, 1 Meter long, graduated in | Centimeters, and 
secured ■with a middle sized cork into a middling wide encasing tube. The 
latter is drawn small at the top, in a right angle, ■which terminates in a boil- 
ing vessel, supported© n an iron stand, over a lamp flame of 3 tubes. Out of 
the lower end of the encasing tube runs a tube connecting with a condensing 
tub. The graduated tube descends into a Mercury trough, out of which also 
runs a measuring tube, graduated by a “ Nonius” graduating screw, showing 
the volume by the pressure of the quicksilver. 
3566. Murrle’s Distilling Apparatus. (See III., p. 237.) For either 
Chemical Laboratories, Polytechnic Schools or Provisional Assay offices. Com- 236 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
Hoffman’s Steam-Tight Determination Apparatus. 
3565 
plete, ready to set into brick. The condensation of steam takes place in the cool- 
ing tub, generally; a large Sand Bath accompanies the apparatus, which can 
be heated at the same time and with the same fire in the hearth, in which 
case the cooling tub must be placed elsewhere. The length of this apparatus 
is 6| feet, depth 3 feet. The separate parts of this apparatus are : 1 Copper 
Steam-boiler, tinned inside ; 1 Cooling Tub with cover and level tubes; 1 Fill- 
ing Funnel; 2 large Caps with ball Stop-cocks; 5 small ditto; 1 Tin Ali- 
mentary Feeding Tube; Glass Water Gauge; Copper tinned Steam Drying 
Box, with 15 compartments; 1 Steam-pipe, running from the Steam-boiler 
to the Drying Box ; 1 ditto, to the Cooling Tub from the Drying Box; 1 Wind- 
ing Tube; Detaining Pins; Filtering Funnel, with Binding Tubes; 3 Interme- 
diary Stop-cocks on the Steampipe; 3 Dogshead Stop-cocks for the Steam- 
boiler; Drying Case; Cooling Tub; Steam-boiler Plate (2 entire); Pedestal 
for the Cooler; Board for the Drying Case; 2 Props for ditto; Fish-bellied 
Roast, etc., etc. 
murrle’s distilling apparatus.—Continued. OF CHEMICAL AND PHYSICAL APPARATUS. 
237 
MURRLE’S DISTILLING APPARATUS, imported only 
to order. (For description, see pp. 235, ’36.) 
3567. Distilling Apparatus, with Adjuncts, according to Dr. Mohr, 
consisting of: 1 Distilling Alembic of 2 gals.; Water Jacket, Steam-pipe, 
Neck; Angular Condensing Tubes; Steam-pipe, with Transverse Stop-cock; 
Condenser for distilling water; large and small Detaining Pins; Alimentary 
Feeding Pipes; 2 Apparatus Boxes of 24 oz.; 1 ditto, of 12 oz.; 1 ditto, of 
Emilian shape, of 24 oz.; 2 Faucets ; Steam-pipe, with Intermediary Stop- 
cocks from the Cap into the Steam-pipe which 
conducts the distilled water into the Cooler; 
Casseroles, with cover, 3| qts.; ditto, of Emi- 
lian, of 2 qts.; 2 Intermediary Stop-cocks; 2 
Dogshead Stop-cocks on the Steam-boiler and 
3566 
3567 
3568 
Cooling Tube; 1 little Stop-cock on the Cap ; Brass Connectors, hermetically 
sealed on the Apparatus, Tubes and Faucets; Copper Steam-boiler of 30 qts.; 
Cooling Tub of 125 qts,; 2 level Tubes with Funnel; Glass Water Gauge; 
Cap of one of the Evaporating Dishes; Front Plate; Covering Plate; Side 
Frame; Hot-air Passage; Fish-bellied Roast; Iron Steam-boiler Plate; Lit- 
tle Ring Plates on the Cap; Wooden Pedestal; Knob, Feet and Binding of the 
Crank Hands ; Brush, Plaster Model, etc. 238 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
3568. Distilling Apparatus, Dr. Mohr’s, together with 1 Dry Box, 1 2-gal. 
Still, Water Jacket, Steam Tube, Neck, Angular-shaped Worm, Steam Tube, 
with Intermediary Stop-cock; Worm for distilling water ; Alimentary Feeding 
Pipe ; 2 Apparatus Boxes, a, 24 oz.; 1 ditto, of 12 oz.; 1 ditto, Emilian, of 24 
oz.; 2 Faucets; Steam Pipes, with Intermediary Stop-cock, running from 
Steam-boiler to the Cooling Tub and Drying Box; little Stop-cock on Cap; 
Brass Connectors, hermetically sealed; Steam-boiler, of copper, of 30 qts.; 
Cooling Tub of 125 qts.; 2 Level Tubes, with Funnel; Glass Water Gauge; 
Cap of one of the Casseroles; Steam Drying Box, with two compartments 
with two perforated shelves; Front Plate; Covering Plate; Side Frame; Hot- 
air Passage; Fish-bellied Roast; Iron Steam-boiler Plate; Wooden Pedestal; 
Little Ring Plates on the Caps; Knob, Feet and Binding of the Crank Han- 
dle ; Brush, Plaster Models, etc. 
3569 is of a construction similar to 3563, only with smaller dimensions, its 
depth being a space of 2 ft. 4 in., and, in its front, inclusive of a space under 
the Cooling Tub (to place Flasks) is 4 ft. 5 in., and it consists of 1 Distilling 
Alembic, with Cover, of 6 qts.; Water Jacket; Steam Pipe, with Intermediary 
Stop-cock ; Cooling Tubes for distilling water; 2 Detaining Pins; Alimentary 
Feeding Pipe; 2 Apparatus Boxes of 12 oz.; 1 ditto of 6 oz.; 2 Faucets; Steam 
Pipe, with Intermediary Stop-cock, from the Cap into the Steam Pipe which 
conducts the distilled water into the Cover; Casseroles, with Cover, of 14 qts.; 
2 Intermediary Stop-cocks; 2 Dogshead Stop-cocks on Steam-boiler and Cool- 
ing Tub; little Stop-cock on Cap; Brass Conductors, hermetically sealed; 
Copper Steam-boiler of 18 qts.; Cooling Tub of 60 qts.; 2 Level Tubes, with 
Funnel; Glass Water Gauge; Cap of one of the Casseroles; Front Plate; 
Cooling Plate; Fish-bellied Roast; Steam-boiler Plate ; Pedestalon the Tub, 
with Stationary Screw ; Knob, Feet and Binding of the Crank Handles ; Brush, 
Plaster Model, etc. 
In addition to the foregoing illustrated styles, I have facilities 
for importing others similar in character. 
3571. BUNSEN’S APPARATUS, for GAS ANALYSIS. 
1248a. Absorptiometer, for Measuring the Absorption Power of Gases.. $50.00 
2410. Gasometer, Bunsen’s, Mercurial Graduated Millimeters 2.75 
2888. Gas Photometer, Bunsen’s, 5 feet long, carefully registered scale with 
sliding and reflecting screen, complete, as used in the University of Heidelberg, 
with gauge $30.00 
2411. Gas Meter, with Exposed Indices, showing tens, hundreds, and thou- 
sands Pressure Indicator Regulator, and Delivery Jet $50.00 
2889. Gas Regulation Burner 5.00 
3572. Ditto, Regulator, Kemp’s, ordinary 3.50 
2413. Ditto, with Bunsen’s new improvement 4.00 
2407. Gas Tubes, registered in cubic Centimeters $1.25 to 2.50 
2418. Ditto, 5 cubic inches, in tenths, each 1 75 
2417, '18. Ditto, or Absorption Tubes, lipped, in Millimeters... .$1.75 to 2.50 
1407. Ditto, Syphon Barometer, engraved scale, with support 15.00 
3572. Apparatus, for the Determination <?f Sulphur by Chlorine.. 7.50 
3573. Ditto, for preparing Nitrogen by Chlorine and Ammonia, consisting 
of Glass Flask, Receiver, Delivery Tubes, Support and Burner $7.50 
3574. Ditto, for the Determination of Nitrogen, after Dumas 15.00 
3575. Ditto, for preparing Nitrous Oxide, consisting of Gas-burner or Lamp, 
Woulft’s Bottle, Gallows Screw Connector, fitted with Mouth-piece and Stop- 
cock, bent Tube with Connector, Pint Retort and Receiver, and Lamp Stand 
of iron $12.00 
3576. Ditto, for combining the Gases requisite for forming Exhilarating 
Gas, consisting of Bell and Receiver, each with ground edges, between which is 
placed a Plate of Glass, ground on both sides - - $2.50 
3577. Ditto, for generating Chlorine Gas, consisting of Lamp, Pneumatic 
Cistern, Iron Stand, Flask, Sand Bath, etc $10.00 
3578. Ditto, Deflagrating, for making Anhydrous Phosphoric Acid by 
burning Phosphorus in Oxygen $3.50 
3579. Ditto, consisting of Carboys of Earthenware, with Filter for gener- 
ating Chlorine. OF CHEMICAL AND PHYSICAL APPARATUS. 
239 
3580. Apparatus for preparing Nitrogen by burning Phosphorus in air, $3.50 
3581. Ditto, to illustrate the Diffusion-of Gas 2.00 
2189. Ditto, for showing Endosmosis 150 
3582. Ditto, to illustrate the Formation of Chloride of Ammonia by con- 
densing the vapors of Hydrochloric Acid and Ammonia, consisting of a Glass 
Flask holding one gallon, to which are attached two Tubes by means of an 
India Rubber Connection $2.50 
3583. Ditto, for making Chloride of Sulphur, consisting of two tubu- 
lated Receivers, Chloride of Calcium Tube, Bulb Tube, Gas Flask, etc., 
after Mitscherlich $7.00 
3584. Ditto, Mohr’s Ether Extraction $8.00 
(See also list of Hoffman’s Apparatus.) 
3585. Ditto, Bunsen’s, for obtaining pure Hydrogen Gas 6.50 
3585 
3586 
3586. Ditto, ditto, for obtaining pure Oxhydrogen by the Decomposition 
of Water $6.50 
2419. Porcelain Apparatus, for Washing Gases, consisting of two deep Porce- 
lain Dishes, fitting into each other with concentric Chambers, Receiver and 
Vent $5.00 
3463. Woulff’s Apparatus, for Washing Gases, 8 oz 5.50 
“ Ditto, ditto, ditto, ditto, ditto, pints 7.00 
“ Ditto, ditto, ditto, ditto, ditto, quarts 8.00 
1602. Lamps, suitable for the above, each 1.25 
3239. Iron Support for ditto 1.50 
1731. Apparatus, for Generating Chlorine, Safety Funnel and Delivery 
Tube, Quart Flask $1.35 
2396, ’97. Ditto, for Sulphurreted Hydrogen, large size, 2 Bulbs, Kipp’s, 
$6.00 to 7.50 
2401. Ditto, ditto, smaller, Babo’s $1.00 
2194. Ditto, for the Extraction of Ether, 1 gal 14.00 
2022. Ditto, for Displacement, after Guibourg 12.00 
2019. Ditto, for the Extraction of Ether, small, or Displacement Appa- 
ratus 75 
3406. Bottles for Washing Precipitates, Faraday’s pints 50 
“ Ditto, ditto, ditto, ditto, quarts 75 
2233. Evolution Flask, complete $1.25 
Gas Bottles, with Receiving and Delivery Tube 75 
2402. Hydrogen Generators $5 00 to 40.00 
2405. Oxygen ditto, quarts $4.50 
“ Ditto, ditto, 4 gal 6.00 
2407. Pepy’s Gas Holder, of Copper, 10 gals 27.50 
“ Ditto, ditto, ditto, ditto, 15 gals 37.50 
2406. Ditto, ditto, Japanned Zinc, 10 gals 22.50 
“ Ditto, ditto, ditto, ditto, 15 gals 27.50 240 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
For determining the specific conductivity of metals, especially 
of copper, a matter of great importance to those manufacturing 
or using wire for telegraphic or other electrical purposes, and 
in short, the capacities of all other instruments for similar purposes 
combined are embraced in this one, in a substantial and compact 
form, convenient for transportation, and comparatively safe from 
injury. Its operations are exceedingly exact, and in nowise 
complicated or difficult. Descriptive Pamphlets may be had on 
application. Price, each, $200 
BRADLEY’S 
APPARATUS FOR 
ELECTRIC MEASUREMENT. 
3570 
3570. Bradley’s Apparatus for Electric Measurement, for ac- 
curately determining the electro-motive force, resistance and 
strength of batteries. For directly measuring the resistance of 
all conductors of electricity, telegraph wires, etc., from the -fig 
an ohm to to8o ohms. For determining the insulation resistance 
of telegraph lines up to millions of ohms. For locating breaks, 
faults and crosses on telegraph lines, cables, etc. For determin- 
ing the quantity of metal of any kind deposited in a given time 
in the process of electroplating, gilding, etc. OF CHEMICAL AND PHYSICAL APPARATUS. 
241 
APPARATUS FOR HEAT. 
3587. Apparatus, for showing Specific Heat $5.00 
1828. Conductometer 2.50 
3588. Apparatus to show Spheroidal State of Liquids, as per No. 52 of Tyn- 
dall, on Heat $2.00 
3589. Trevelyan Rocker, according to Tyndall, Fig. 27 6.00 
3590. Straight Roller, Electrical, according to Tyndall, Fig. 30 8.00 
3591. Elliptical Roller, according to Tyndall, Fig. 31 10.00 
3592. Apparatus, to show Influence of Pressure at Boiling Point, Fig. 
35 $8:00 
3593. Ditto, showing Development of Heat by Compression of Air, Fig. 13, 
$4.00 
1779. Bunsen’s Furnace, for Organic Combustion, imported,.25 Burners. 60.00 
1780. Ditto, domestic, 25 Burners .. 50 00 
3594. Ditto, 18 Burners 40.00 
1781. Ditto, 10 Burners 30;00 
3595. Sefstrom’s Chemist’s Forge, imported to order 175.60 
1476. Blow-table and Blast-pipes 40.00 
1778. Liebig’s Combination Furnace, 24 in., $3.25 ; 18 in 2.25 
1809. Ditto, Condensers, Glass, small 1.00 
1811. Ditto, ditto, Japanned Tin 3.50 
1812. Ditto, ditto, Brass, soldered 6-50 
1813. Ditto, ditto, ditto, brazed . ... 10.00 
3599 
3603 
3605 
3596. Carre’s Ice Freezer, imported to order 150.00 
2992. Pulse Glasses, carefully packed in pasteboard case, each 50 
2190. Eolipile, or Ether Jet 50 
3597. Parabolic Reflectors, with Iron Balls, Support and Stand of Brass, 
10 in $12.00 
2878. Ditto, ditto, ditto, ditto, 13 in.... j 16.00 
“ Ditto, ditto, ditto, ditto, 15 in 25.00 
2879. Ditto, ditto, ditto, ditto, nickelized, 10 in 15.00 
“ Ditto, ditto, ditto, ditto, ditto, 13 in 19.00 
“ Ditto, ditto, ditto, ditto, ditto, 15 in 28.00 
The Nickelized Reflectors are not easily corroded, and retain their polish. 
2529. Psychrometer, August’s, wet and dry bulb, mounted $12.00 
3304. Differential Thermometers, Leslie’s, each 2.50 
3598. Radiator, Leslie’s, each 2 50 
3004. Pyrometer, Three Metals, ordinary 6.00 
3005. Ditto, ditto, ditto, extra fine, with Brass Revolving Alcohol Holder. 
$12.00 
3599. Brass Ball and Gauge Ring, wooden handle, showing Expansion and 
Contraction, per pair $3.25 
1808. Compound Bar, showing Unequal Expansion 1.00 242 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
apparatus for heat.—Continued. 
1827. Apparatus, for showing the slow' Conduction of Heat downwards by 
Fluids $2.50 
2268. Glass Fire Syringe, with Tinder, 10 in. long 8.00 
1347. Flameless Lamp 1.50 
1960. Davy’s Safety Lamp, for Miners, etc 7.50 
2422. Wire Gauze, in frame 75 
1912. Cryophorus, Wollaston’s, double bulb 2.00 
1913. Ditto, ditto, single bulb 1.75 
2527, ’28. Hygrometers, Saussure’s $4.00, 8.00 and 12.00 
2526. Ditto, Mason’s 4.50 
3306. Maximum and Minimum Thermometers 4.00 
3310. Metallic Thermometers, Watch Form 20.00 
1290. Air ditto 25 
3415. Water Hammers 75 
2563. Brass Jets, for Burning Gases 50 
2564. Ditto, ditto, ditto, w ith Stop-cock and Flat Tip 2.00 
1791. Combustion Tubes 40 to .50 
3306. Day and Night Thermometers 4.00 
1477, ’79, ’80, ’81. Oxhydrogen Jets $4.00, 10.00. 15.00 and 20.00 each. 
1649. Candle Bombs, per doz 30 
3600. Hygrodeik, Edson’s, for ascertaining the sensible Temperature due 
to Evaporation, the actual Humidity, Dew Point and absolute amount of 
Moisture $15.00 
APPARATUS for HYDRAULICS AND HYDROSTATICS. 
3601. Model of Forcing Pump, complete $20.00 
3254. Tantalus Cup 2.00 
3629 
2098 
3606 
3619 
3602. Archimedes Screw 5.00 
3603. Equilibrium Tubes, a set of 6 3.50 
2098. Hiero’s Fountain, of Glass 18.00 
3604. Barker’s Mill, plain 6.00 
3605 Ditto, ditto, with Stop-cock 10.00 
1686. Hydrometer Jar, with Balloon Car 1.50 to 5.00 
2524. Nicholson’s Hydrometer 6.00 
3606. Archimedes principle, Brass Cup and Cylinder 3.50 to 6 50 
2461, 2520 Hydrometers, various 75 to 2.00 
2544, ’44. Ditto, Jar, Glass Foot, with or without Lip 1.00 to 2.00 
— Specific Gravity Balance 15.00 to 20.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
243 
1684. Cartesian Imps 20 to $1.50 
3247. Glass Syphons 50 to 1.50 
3607. Wur tern berg Syphons . 1.00 
3608. Diving Bell 6.50 
2994. Forcing Pump, of Glass 1.50 
2993. Lifting Pump, of “ 1.50 
1656. Capillary Tubes and Pan 2.00 
1654. Ditto, Plates, with Pan, to show the Parabolic Curve 2.00 
3609. Apparatus for showing the Principle of Archimedes Screw, consist- 
ing of Archimedes’Screw, mounted on Wheels. When the Rod holding the 
Screw is swiftly revolved, the machine will be propelled $10.00 
APPARATUS FOR HYDRAULICS AND HYDROSTATICS.—Continued. 
APPARATUS FOR MAGNETISM. 
3610. Electro Magnet 2.50 
3611. Ditto, ditto, on Stand, to lift Weights 16.00 
2126. Ditto, ditto, Revolving, Page’s 8.00 
3622 
3625a 
2624 
3632 
3612. Circular Magnets, with Ring 4.75 
3613. Helix on Stand 4.50 
3611. Contracting Helix 6.00 
3615. Voltaic Pistol 4.00 
2647. Horse-Shoe Magnets, 3 in 30 
“ Ditto, ditto, ditto, 3| in 60 
“ Ditto, ditto, ditto, 4 in 75 
“ Ditto, ditto, ditto, 6 in ... 1-25 
“ Ditto, ditto, ditto, 10 in 4.50 
Ditto, ditto, ditto, compound 4.00 244 
E. B. benjamin’s DESCRIPTIVE CATALOGUE 
2646. Magnets, Single Bar $1.00 
2649. Ditto, Pair, with Armature 3.50 
3616. Ditto, ditto, ditto, Wheel Armature 3.25 
2650. 1800. Magnetic Needle, on Stand .. $1.75 to 2.50 
2651. Dipping Needle 2.00 
3617. Adhesion Plates 1.50 
3618. Lodestone, according to size 50 and upwards 
3619. Gassiot’s Cascade $2.50 
(See also Electricity, in regular Catalogue, under E.) 
apparatus for magnetism.—Continued. 
APPARATUS FOR MECHANICS, Made only to Order. 
3620. Inertia Apparatus $2.50 
1772 Collision Balls, Lignumvitse, set of 5 3.50 
3621. Centre of Gravity, set of 8 11.00 
3622. Leaning Tower 1.25 
3623. Whirling Table and Accessories 33.00 
3624. Centrifugal Forces, per set 12.00 
3625. Illustration of Weights and Pulleys 33.00 
3625 
3626. Screw on Mahogany Frame 6 00 
3627. Sets of Solids 5.00 
3628. Dissected Cone 2.50 
3629. Gyroscope 8.00 
3630. Atwood’s Falling Machine $75.00 to 150.00 
3631. Apparatus, Brass, showing the principle of the Reverbal Balance. 
$15.00 
3632. Inclined Plane 4-00 
OPTICAL APPAKATUS. 
2168. Duboscq’s Electric $400.00 
2169. Serriu’s, ditto, litto 450.00 
2640. Magic Lantern, German 25.00 
2639. Ditto, ditto French, each $6.00, 10.00 and 25.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
245 
optical apparatus.—Continued. 
3633. Illustrations on Glass, for Magic Lanterns (Fancy Illustrations), 
per set . $5.00 to 10.00 
3634. Electric Lamp, by clock-work, made to order $150.00 
3635. Ditto, Lantern 50.00 
2607. Magnesium ditto 25.00 
2608,2612. Oxhydrogen Calcium Light $7.50 to 25.00 
2613. Carbon Points, mounted 20.00 
3636. Ditto, ditto, ditto, with Reflector 25.00 
3637. Ditto, ditto, ditto, in Lantern 27.50 
3638. Ditto, ditto, without Lenses and small Reflector 30.00 
1679. Ditto, Pencils, per inch 06 
3639. Spectroscopes, Duboscq’s, imported to order 210.00 
3139. Ditto, Browning’s, 2 Prisms 160.00 
3138. Ditto, Heildelberg, single Prism, with 2 Lamps, 2 Holders, 12 Platina 
Ends $65.00 
3136,’37. Ditto, Browning’s, Hand $15.00 to 18.00 
1728. Charts, showing the Spectra of Metals and Stars, translated into 
English, each $3 50 
3257. Merk’s Telescope, High Power, with Strap for mounting on Stand. 
$30.00 
2681. Gundlach’s Microscope, 2 Eye-pieces, 5 Objectives, with Slides, etc, 
al| in an elegant, highly polished case; a very superior article, complete 
$200.00 
2680. Nacht’s Compound Microscope, French 20.00 
2678. Ditto, ditto, ditto, ditto 15.00 
2682. Accurate Solar Microscope, complete, in fine box, hinged Cover, etc. 
$200.00 
1768. Collection of Rare Specimens, for Spectral Analysis, with Platinum 
Wires on Glass Foot, and Stands to hold them, with Sliding Box $7.50 
2630. Watchmakers’ Lenses 2.50 
1769. Collection of Objects, for Solar Microscope, mounted 25.00 
1871. Microscopic Covers, Circles, very thin, per ounce 4.00 
1872. Ditto, ditto, Squares, per ounce 3.00 
2687. Ditto, Slides, assorted, per doz - .50 
2629. Camera Lens, or Asplanat, by Steinheil - 30.00 
2976. Set of 3 Hollow Prisms, mounted on Stand 30.00 
3640. Ditto, Acromatic ditto, ditto, ditto 30.00 
3641. Single Rectangular, ditto, ditto 16.00 
2973. Bottle Prisms $6.00 to 12.00 
2988. Equilateral ditto, 35x33 N. Y. in., each 5.00 
2983. Acromatic ditto, 30x27 N. Y. in., per pair 5.00 
2984. Ditto, ditto, 35x32 N. Y. in., per pair 6.00 
2985. Ditto, ditto, 40x36 N. Y. in 7.25 
2986. Ditto, ditto, 45x45 N. Y. in 9.00 
2981. Prisms, for Dark Chambers, 15 Lines, each 1 2.00 
2982. Ditto, ditto, ditto, ditto, 21 Lines, each 2.50 
2974. Elegant Hollow Prism, Bisulphide of Carbon Prism, all the Joints 
fitted exactly, without flaw, blister or striated lines; a valuable gem for a 
Cabinet, and made by the celebrated Dr. Steinheil, of Munich $50.00 
2959. Polarization Apparatus, Mitscherlich’s, with Extra Tube 60 00 
364’2. Model of the Human Eye, showing the Motion 2.50 
2234. Eye Model, showing the Reflection on the Eye Lens, with the use of 
Spectacles $15.00 
2621. Magnifying Leases, for Assayers 2.50 
2631. Set of Glass Lenses, 6, for Demonstrations 2.50 
3643. Mirrors, Convex and Concave 2.75 
2632. Apparatus, for Defraction of Light 7.50 
2810. Ditto, for showing Monochromatic Light, 5 Burners 12.00 
3109. Ditto, Hoffman’s, for Inverting the Soda Flame $3.00 to 3.50 
3644. Ditto, for showing the Oxidation of the Soda Flame 2.00 
3645. Ditto, Hoffman’s Flame Apparatus, with Argand Burner 5.00 
2622. Lenses, Coddington 2 25 to 2.50 
2623. ’24, ’25. Ditto, Stanhope, German Silver 2.00 to 3.50 246 
E. B. benjamin’s DESCRIPTIVE CATALOGUE. 
2526. Loups, single, 9 lines, .75; 11 lines, $1.00. 
2627. Ditto, double $1.25 to 1.50 
2628. Ditto, triple 1.50 to 1.75 
2633. Apparatus, for the Recomposition of Light 2.50 
2676. Microscopes, No. 1, Universal Joint 7.50 
2677. Ditto, No. 3 10 00 
2678. Ditto, No. 4 15.00 
2679. Ditto, No. 1, in two columns, etc 25.00 
3144, ’45. Lantern, Browning’s, for projecting Spectra on the Screen. 
$50.00 to 150.00 
optical apparatus.—Continued. 
APPARATUS FOR ORGANIC ANALYSIS. 
2948. Air Pump Plate, 7| in $25.00 
1362. Aspirator, the same as used in Apparatus 1352, on p. 15 1.50 to 2.50 
1360 to 1362. Aspirator, glass 2.00 to 3.00 
1365. Aspirator Tubes 50 
3646. Complete set of Apparatus for Organic Analysis, according to 
Liebig $45.00 
1714 to 1720. Chloride of Calcium Tubes 15 to .60 
1776. Combustion Boats, porcelain 20 to .50 
2926. Ditto, ditto, Platinum, per grain 03 
2375. Ditto, Furnaces, Bunsen’s gas 60.00 
1780, Ditto, ditto, American gas 50.00 
1781. Ditto, ditto, French gas 30.00 
1782 to 1786. Ditto, ditto, to be used with Kerosene 12.00 to 40.00 
1777. Ditto, ditto, Storer’s 1.50 
1778. Ditto, ditto, Liebig’s Charcoal 2.50 to 3.00 
1789. Ditto, ditto, Foil, of Copper, per ounce .05 
1791. Combustion Tubing to .50 
1792. Ditto, ditto, for Nitrogen determination .35 to .45 
— Copper Turnings (see Chemicals), per lb 1.00 
2423. Ditto, Gauze, per sq. ft 85 
2050. Drying Baths 2.50 
2061, ’62. Drying Tubes, Liebig’s 50 to .60 
2343. Filling Tubes 50 
2417, ’18. Graduated Tubes for Nitrogen determination 1.25 to 2.50 
2416. Glass Tubes, for weighing substances to be analyzed, per doz.... 2.00 
3387. India Rubber Tubing, | in. bore, per ft 10 
2664. Mercury Jar, of glass 1.00 to 2.00 
2670. Ditto, Trough, Porcelain, to hold 5 lbs. of Mercury 1.00 
2671. Ditto, ditto, ditto, 16 lbs. ditto 2.00 
2853. Nitrogen Bulbs, Horsford’s 75 
3647. Ditto, ditto, Simpson’s 1.00 
2968. Potash Bulbs, Geisler’s or Mohr’s 1.00 
2966. Ditto, ditto, Liebig’s 75 
2969. Ditto, Pipettes 50 
2343. Suction Tubes 50 
3239. Wood Supports 1.50 
Black Oxide of Copper. 
Chromate of Lead, pure fused 
Soda Lime. 
Bichromate of Potash, cryst. 
Caustic Potash. 
Chloride of Calcium, crude, dry. 
CHEMICALS. 
Chloride of Calcium, fused. 
Chlorate of Potash, cryst. 
Copper, in fine strips. 
Ditto, Turnings. 
Asbestos, long fibre. 
APPARATUS FOR PNEUMATICS. 
2946. Air Pumps, large and powerful $100.00 
2951. Ditto, ditto, Mischterlich’s 10.00 
2950. Ditto, ditto, ditto, mounted . 15.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
247 
apparatus for pneumatics.—Continued. 
2952. Air Pumps, Liebig’s, Brass Cock$15.00 
2948. Ditto, ditto, with Plate and strong Clamp to attach to a Table in 
place of Mahogany base$20.00 
2948 
2948. Air Pumps, mounted on a fine polished Mahogany base, with heavy 
ground glass Plate $25.00 
The more costly grades of Air Pumps can be furnished, when desired, of 
first-class workmanship. 
1443. Swelled Glass Receivers, with knob, | gal. $1.50, 1 gal. 2.00, 2 gal. 3.00 
1444. Ditto, ditto, ditto, open tops, | “ 1.75,1 “ 2.50,2 “ 3.50 
1449. Plain ditto, ditto, quarts, 75 cts., $ “ 1.00,1 “ 1.50 
1446. Ditto, ditto, ditto, tall, with knobs, “ 75 “ “ 1.00,1 “ 1.50 
1442. Ditto, ditto, ditto, flat, ditto, 6 in. $1.25, 8 in. 1.75 
3648. Receiver, with sliding Rod, Hook and Ball.... 5.00 
Ditto, the Cap and Stop-cock fitted, extra 2.00 
3416. Water Hammer 1.00 
2555. Bladder and Hand Glass 75 to 1.25 
3649. Magdeburg Hemispheres $7.00 to 10.00 
3650. Bolt Head Experiments 4.00 
3651. Mercury Shower 3.00 
1289. Air Balloons, glass, for weighing Air, 1 gal 1.00 
1405. Ditto, ditto, rubber and Gold- 
beater’s, 2 gal $1.50 to 5.00 
Ditto, ditto. See Balloons. 
3338. Torricellian Experiments. $4.50 
3652. Guinea and Feather Tube, 
$8.00 to 10.00 
3653. Bell, in Vacuo 4.00 
1684. Cartesian Imps, singly, from 
.25 to 1.00 
1686. Ditto, ditto, in Bottles, from 
$1.50 to 1.75 
3654. Model, Hydrostatic Press, 
$20.00 
2459. Hydroclyse, or Forcing Pu p, 
producing a constant stream of water, 
enclosed in a fine polished Velvet-lined 
Case $4.00 
3649 
3652 248 
E. B. BENJAMIN'S DESCRIPTIVE CATALOGUE 
apparatus for pneumatics.—Continued. 
2460. The foregoing can also be used as a Syringe, supplied with Male and 
Female Joints, in fine polished Velvet-lined Cases $5.00 
The above is the best form of Injecting Syringe known, as its Valves and 
all its appurtenances are all Metallic. 
3655. Hydrostatic Balance $10.00 
3656. Apparatus, for upward and downward Pressure 14.00 
3657. Barometer Apparatus 6.00 
1822. Apparatus for Air Cylinder 12.00 
2316. Freezing Apparatus $3.50 to 6 00 
1912. Cryophorous 2.00 
1648. Bursting Squares, per doz 2 50 
3658. Apparatus, for illustration of Marriotte’s Laws 10.00 
2904. Bubble Pipe, for Gas 75 
2313. Fountain, in Vacuo 9.00 
2953, ’54, ’55. Pneumatic Trough, Japanned, 12 in. 3.00, 15 in. 3 50, 16 in. 4.50 
2956. Ditto, ditto, Glass, solid, 12x5 in 4.50 to 8.00 
— Ditto, ditto, with Brass Sliding Shelf 1.00 
2957. Ditto, Turning Corners, very stout, 12x6 in 7.00 
2958. Ditto, ditto, ditto, ditto, 14x7 in 8.50 
— Ditto, ditto, Porcelain, for use with Mercury. See Mercury Troughs. 
1441. Bee-Hive Shelves, Porcelain, small -< .25 
“ Ditto, ditto, large 75 
a Ditto, ditto, ditto, Earthen 25 
Fittings. See Stop-cocks, etc. 
3659. APPARATUS, recommended by Dr. Scheibler and others, 
for the Analysis of SUGAR, SYRUPS, etc. 
1257. Apparatus for determining the quantity of Carbonic Acid in Bone 
Ash, accompanied with instructions, bottles, etc., corrected by Dr. Scheibler, 
$35.00 
1259. Dr. Scheibler’s New Apparatus, for Quantitative Volumetric Analysis 
of Carbonic Acid - $45.00 
1313. Salleron’s Alembic, for Testing the percentage of Alcohol in Saccharine 
Solutions $25.00 
1374. Balance for Specific Gravity, sensible to /-0 of a millogramme.. ..77.00 
1376. Ditto, ditto, for 200 grammes 107.00 
1648a. Colorimeter, for the examination of Sugar and Syrups 
1949. Mixing Cylinders 1.30 to 4.50 
2044. Drying Baths 15.00 
2205 to 2230. Evaporating Dishes 20 and upwards. 
2495 to 2499. Saccharometers 75 to 2.50 
2500. Ditto, according to Dr. Scheibler 15.00 
2635. Centimeter bottles, stoppered. 35 to 1.60 
2636. Ditto, not stoppered 25 to 1.00 
2637. Ditto, with two marks on the neck 60 to 1.25 
2692. Mixing Bottles 2.50 to 3.50 
2959. Saccharimeters, or Polarisation Apparatus, Mitscherlich 60.00 
2960. Ditto, Wild’s, in Mahogany Case 175.00 
2961. Ditto, Soleil 150.00 
2962. Ditto, Soleil-ventzke 225.00 
APPARATUS FOR WATER ANALYSIS, ETC. 
3660. Apparatus for the Decomposition of Water, mounted on stand, $2.50 
3661. Ditto, ditto, ditto, with cup complete, according to Faraday.. 5.00 
3662. Ditto, ditto, ditto, unmounted, Hoffman’s 6.50 
3663. Ditto, ditto, ditto, mounted 10.00 
3661. Ditto, for the Determination of Water and Carbonic Acid in the 
atmosphere, after Fresenius 12.00 
3665. Ditto, for the Analysis of Mineral Waters, by Fresenius 10.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
249 
apparatus for water analysis, etc.—Continued. 
2443. Bunsen’s Apparatus, for Rapid Filtration $11.00 
3666. Ditto, set usually employed, including Flasks, Funnels, Mould 
Holder and Cone 18.00 
2247. Support of Japanned Tin for Bunsen’s Apparatus 3.00 
2252. Flasks, for Filtering, extra heavy glass, wide mouths, 16 oz 40 
“ Ditto, ditto, ditto, 24 oz 50 
“ Ditto, ditto, ditto, 32 oz 60 
2319. Funnels, prepared expressly, and ground to an exact angle of 60 deg. 
on Moulds made for the purpose, l| in. 15 
“ Ditto, ditto, ditto, 2 in .20 
“ Ditto, ditto, ditto, 3 in 30 
“ Ditto, ditto, ditto, 4 in 40 
“ Mould and Holder for preparing the Cone 50 
1830. Platinum Cone, for Supporting the Filter, price according to weight, 
per grain, about 75 
VARIOUS FORMS OF APPARATUS, 
ACCOMPANIED WITH 
ACCURATE DRAWINGS AND SPECIFICATIONS, 
MAY BE MADE 
SPECIALLY TO ORDER, 
EITHER IN 
GLASS, BRASS, OR WOOD. 
ORDERS ALSO FOR 
TECHNICAL AND TEXT BOOKS, 
WILL BE 
EXECUTED PROMPTLY, 
AND 
PACKED WITH GOODS IN MY LINE, WITHOUT EXTRA CHARGE. 250 
E. b. benjamin’s descriptive catalogue. 
3667. 
Dr. SQUIBBS’ 
NEWLY INVENTED 
UNIVERSAL LABORATORY SUPPORT, 
Adapted to sustain Tubes of any size, up to 3 inches. Price, $2.50 
This Support supplies a want long experienced in the Labor- 
atory, in substituting a single Apparatus for several varieties. 
3668. RELATIVE VALUE OF VARIOUS WEIGHTS 
AND MEASURES. 
TROY AND AVOIRDUPOIS WEIGHTS. 
Pounds. Pounds. Pounds. Ounces. Grains. 
1 Troy = 0.822857 Avoir. = 0 13 72.5 
1 Avoir. = 1.215277 Troy = 1 2 28.0 
3669. RELATIVE VALUE OF TROY AND FRENCH 
WEIGHTS. 
TROY. 
Millegramme = .0154 grs. 
Centigramme = .1543 
Decigramme = 1.5434 
Gramme = 15.4340 Pounds. Ounces. Drachms. Grains. 
Decigramme = 154.3402 = 0 0 2 34.3 
Hectogramme — 1543.4023 = 0 3 1 43.4 
Kilogramme = 15434.0234 = 2 8 1 14. 
Myriagramme = 154340.2344 = 26 9 4 20. 
3670.—The French Metre, or Unity of Length, at tempera- 
ture of 32 deg. Cel. = 39.371 Eng. inch, at 62 deg. Fah. 
The French Litre, or Unity of Capacity, at same temperature, 
= 61.028 Eng. cubic inches. 
The French Gramme, or Unity of Weights, at same tempera- 
ture, = 15.434 Eng. Troy grs. INDEX. 
A. 
Page 
Absorptiometer, Bunsen’s 6 
Absorption Tubes108 
Acetometers 6 
Acid Dishes7-8 
“ Funnels96,97 
“ “ with stopcock 97 
“ Jars 8 
“ Measures8,9 
Acidimeter 6 
Adapters, various9, 10 
Adhesion Plates244 
Agate Centers 
“ Burnishers 39 
“ Mortars134 
“ Slabs 10 
Air Drying Baths 71 
“ Furnaces102 
“ Globes 10 
“ Pumps143, 144 
Alcoholometers10, 11 
Alembics, Glass 11 
“ Porcelain. 11 
“ Salleron12 
“ Stoneware. .... 12 
Alkalimeters 13 
Amalgam187 
Aneroid Barometers 19 
Annealing Cups 14 
Anvils 14 
Aphlogistic Lamps 14 
Apparatus for Agricult. Chemistry, 220 
“ “ Arsenic detection.... 14 
“ “ Assay225 
“ “ Barker’s Chemistry.. 217 
“ “ Beginners in “ ..214 
“ “ Blowpipe Analysis... 226 
“ “ “ “ ..227 
“ “ “ qualitative.228 
“ “ “ quantitative. 229 
“ Bunsen’s, for various pur- 
poses 238 
“ for Carbonic Acid deter- 
minations, various.. 12, 13 
“ for Carbonic Acid deter- 
minations, in bone black 7 
“ “ Chlorine Gas Genera- 
ting45, 46 
“ for a Course of Lectures.217 
Page 
Apparatus for Decomposition ofW a- 
ter248 
“ for Distilling Water, etc.... 69 
“ “ “ Miirrle’s23“ 
“ “ Electricity73, 75 
“ “ Electric Measurement, 83,240 
“ “ Gas Analysis238,239 
“ “Heat241 
“ “ Hinrich’s Physics 229 
“ “ Hoffman’s Chemistry232 
“ “ Hydraulics and Hydrosta- 
tics 42 
“ “ Illustra’ngMariott’sLaw,248 
“ “ Influence of Pressure at 
Boiling Point241 
“ “ Magnetism243 
“ “Mechanics244 
“ “ Medical Tests222 
“ “Miners and Engineers.. .223 
“ “ Nitrogen, determination 
after Dumas238 
“ “ Nitrogen, preparation by 
Chlorine and Ammonia.238 
“ “ Nitrous-oxide, prepara- 
tion of238 
“ “ Optics244 
“ “ Organic Analysis246 
“ “ Oxydation of the Soda 
Flame245 
“ “Pneumatics247 
“ “ showing the principle of 
the Re verbal Balance.. .244 
“ “Schools and Academies.. 215 
“ showing the Spheroidal state 
of Liquids241 
“ for Steele’s Chemistry216 
“ “ Stockhardt’s Chemistry..224 
“ “ Students and Colleges.. .224 
“ l’ “ Qualitative Chem- 
ical sets....221, 231 
“ “ “ Quantitative Chem- 
icalsets230 
“ “ Sugar and Syrup An’lysis, 248 
“ “ Sulphur Determination by 
Chlorine238 
“ “ Sulphuric Acid Manufac- 
ture 9 
“ “ Upward’ and Downward 
Pressure248 252 
INDEX. 
Page 
Apparatus for Urinary Deposits by 
Qualitative Analysis .. 221 
“ “ Urine Analysis, Flint’s 
method225 
“ “ Volumetric Analysis of 
Urine221 
“ “ Volumetric Chemical An- 
alysis 219 
“ “ Water Analysis248 
“ “ Mineral Water Analysis.. 248 
“ “ Water and Carbonic Acid 
in the Air, determination 248 
“ “ Wilson’s Chemistry216 
Archimedes Principle242 
“ Screw242 
Argand Gas Burners 35 
“ Spirit Lamp121 
Arsenic Plates 14 
“ Tubes 15 
Aspirators 15 
Atomizers 15 
Atropia Bottles 15 
Atwood’s Falling Machine244 
August’s Psychrometer116 
B. 
Balances16,17 
Balling’s Hydrometer113 
“ Sacharometer114 
Balloons 19 
Balloon and Jar 46 
Ball and Ring241 
Barker’s Chemistry, set217 
“ Mill242 
Barometers19 
Barometer Apparatus248 
“ Tubes 19 
Baskets, Lead 19 
“ Straining161 
Baths, Drying71 
Batteries, Electric 80 
Beakers20, 21, 22 
Beale’s Quick Filter 22 
Beaume’s Hydrometers113 
“ Sacharometer114 
Beaufay Crucibles 57 
Becker’s Balances 16 
“ Weights178 
Bee-hive Shelves22 
Bells, Electric 76 
Bell Glasses22, 23, 24 
Bell in Vacuo 39 
Bellows 24 
Berzelius’ Apparatus for Carbonic 
Acid determination 12 
Berzelius’Beakers 21 
“ Blowpipe25 
“ Filtering Paper 91 
“ Gas Bottle105 
Bichromate Batteries 81 
Binding Clamps 24 
“ Screws24 
Bink’s Burettes 33 
Page 
Biot’s Hemisphere 76 
Black’s Blowpipe 25 
Black Lead Crucibles157 
Bladders24 
Bladder aud Hand GlassIll 
“ Pieces 24 
Blast Attachments for Blowpipe.. 24 
“ Burners, Gas 36 
“ Furnaces for Gas100,101 
“ Lamps, Gas 37 
“ Lamp, Alcohol121 
Blood Circulating Apparatus24 
Blowpipes26 
“ Compound25 
“ Oxhydric25 
Blowpipe Apparatus227 
“ Flasks93 
“ Tables24 
Boards for pressing Gas-bags104 
Boiling Glass148 
Bologna Flasks32 
Bolt Heads 27 
Bolt Head Experiments 39 
Burchard’s Electric Machine73 
Bottles, Acid 7 
“ Chlorine30 
“ Cobalt 7 
“ Colored 28 
“ Ether30 
“ Gas 27 
“ Packing, narrow and wide 
mouth 27 
“ Glass stoppered, narrow 
mouth29 
“ Glass stoppered, with wide 
mouth28 
“ Reagent29 
“ Sample 28 
“ Seperatory30 
“ Tubulated at Foot30 
“ with Vitrified Labels 29 
“ Woulft’s31 
Bottle Brushes 33 
“ Caps 31 
“ Imps.....31 
Boxes, Ivory 32 
“ Boxwood. 32 
“ Japanned 31 
“ Pasteboard 32 
“ Porcelain32 
Bombs 32 
Bradley’s Apparatus for Electric 
Measurement240 
Browning’s Electric Lamp 63 
“ Spectroscope160 
Brushes, Acid 7 
“ Button 33 
“ Camel’s Hair 33 
“ Test Tube 32 
Bubble Pipe 33 
Bulb Tubes 33 
Bullion Scales 18 
Bungs 33 INDEX. 
253 
Page 
Bunsen’s Absorptiometer 6 
“ Absorption Tubes... 108, 109 
“ Apparatus for obtaining 
pure Hydrogen Gas... .239 
“ Apparatus for obtaining 
pure Oxhydrogen gas.. 239 
“ Apparatus for determina- 
tion of Carbonic Acid.. 13 
‘ Barometer 19 
“ Battery 80 
“ Burner Tips for flat flame, 39 
“ Blast Gas Lamp 36 
“ “ Attachment24 
“ “ Blowpipe26 
“ Burners 35 
“ Burner Jets120 
“ Carbons 41 
“ Charts 45 
“ Chlorine Absorbing Ap- 
paratus 46 
“ Clamp 24 
“ Eudiometer 85 
“ Gas Tubes108, 109 
“ Gasometer, Mercurial.108 
“ Gas Regulator108 
“ Hot Air Bath72 
“ Meter for Gas108 
Photometer139 
“ Pinchcock141 
“ Quick Filtering Appara- 
tus89 
“ “ “ “ complete..249 
Burettes, Mohr’s, Bink’s, Gay Lus- 
sac’s, Geissler’s, Rammelsburg’s, 
Chameleon, etc33, 34 
Burette Clamps 34 
“ Floats34 
“ Tips 34 
Burners35, 36, 37, 38 
Burner Attachments 36 
“ Forks 38 
“ Furnaces 39 
“ Plates 39 
“ Tips.39 
“ Tubes, flat ends39 
Burnishers 39 
Bursting Squares 39 
c. 
Candlebombs 39 
Canutes 40 
Caoutchouc Caps 39 
“ Balls 39 
Capillary Plates 39 
“ Tubes 40 
“ Tubing 40 
Caps for Bell Jars, Gas Bags, etc.. 40 
“ “ Gallipots40 
“ Porcelain, for lamp chimney. 40 
Capsules40 
“ of Horn 40 
“ of Iron154 
“ Mixing129 
Page 
Capsules,Platinum 40 
“ Porcelain 40 
“ Silver 40 
Carbon Points 41 
Carbons 41 
Carbonic Acid, condensed41 
“ Generator41 
Carbon Cells 43 
Carboys42 
Carre’s Dielectric Machine1G4 
“ Air Pump143 
“ Ice Freezer116 
“ “ “ Wohler’s116 
Carius’ Oven103 
Carthesian Imps 42 
C artier’s Alcoholometers 11 
Casseroles42 
Cassolettes. 43 
Cat Skins 43 
Caustic Holders 43 
Cells, Porous 43 
Centre of Gravity244 
Centimeter Measures 43 
Centrifugal Forces244 
Chameleon Burettes 34 
Chamott Furnaces 99 
Chandler’s qualitative chemical set,231 
“ quantitative “ “ 230 
Charcoal Borers 43 
“ Holders 43 
“ Pieces 4 3 
“ Saw 43 
“ Spatula 43 
“ Sticks 44 
“ Tongs44 
Chardin’s Filtering Paper 91 
Charts46 
Chemicals, List of101 
Chevalier Cremometer 57 
Chilton’s Furnace102 
Chimes46, 47 
Circular Magnets243 
Chisels for Ingots 44 
Chloride of Calcium Jars 44 
“ “ “ Tubes44 
“ “ “ “with bulbs. 45 
Chlorine Bottles 30 
“ Distilling Apparatus46 
“ Meter 46 
“ Gas Apparatus 46 
Clamps, Binding24 
“ Iron 47 
“ Wooden47 
“ for Watch Glasses47 
“ “ “ Craig’s47 
“ “ “ Hoffman’s .. 47 
“ “ “ Mohr’s47 
Clark’s Retort151 
Clay Cylinders227 
Clips for Watch Glasses 47 
Cobalt Bottles 47 
“ Glass Plates 49 
Coddington Lenses124 254 
INDEX. 
Page 
Coffee Machines, French 48 
4‘ German 48 
Coils for Induction 78 
Colanders 161 
Collections of Apparatus 214 
il of Artificial Gems 48 
“ of Crown Diamonds 48 
11 of Crystalographic Models... 48 
“ of Specimens for Spectral An- 
alysis 48 
“ of Nitrogen, Simpson’s Appar- 
atus for 49 
Collision Balls 49 
Collodion Balloons 19 
Colored Glasses 49 
“ Glass Plates 49 
Color Tests, on Porcelain slab 49 
Columbia College qualitative Blow- 
pipe, set 228 
Columbia College quantitative.. .229 
Combustion Boats 49 
“ Bricks. 51 
11 Foils, of Copper 51 
“ Furnace, Bunsen’s Gas.. 49 
“ u Liebig’s Charcoal.. 49 
“ 1 ‘ Storer’s Gas 49 
“ “ French 50 
“ “ fol* coal oil 50 
“ Supports 51 
“ Tubes 51 
Commutators or Current changes.. 51 
Compasses 52 
Compound Bar 52 
“ Blowpipe 25 
Condensers 52 
Condensing Tubes 53 
“ Chamber 53 
“ Cylinder 53 
“ Pump 144 
Conduction of Heat downwards, 
Apparatus for 54 
Conductometer 54 
Cone, Dissected 54 
“ of Platinum 54 
Conical Beakers 22 
“ Test Glasses 167 
Connecting Limbs 54 
“ Tubes 54 
Connectors of Brass 54, 55 
“ Gallows Screw 55 
“ of Rubber. 55 
Cooper’s Mercurial Gas Receiver.. 55 
Copper Foil 51 
“ Gauze 109 
“ Sheet 55 
Wire 179 
“ Water Baths 177 
Corks, Champagne.... 55 
“ Chemical 55 
“ Rubber 153 
“ Teats 55 
Cork Borers 55 
“ Files 89 
Page 
Cork Knives 56 
“ Pressers, of Iron 56 
“ Pressers, of Steel 56 
“ Squeezers 56 
“ Tongs 56 
Cotton Wick 124 
Covers, Glass, convex 56 
“ • “ flat 56 
“ “ square, ground 56 
“ “ with hole in the side 
and center 56 
“ “ with knob 57 
“ Microscopic sq’rs and circles, 57 
Craig’s Watch Glass Clamps 47 
Cremometer 57 
Crown Burner 38 
Crucibles, Assay 57 
“ Beaufay 57 
“ Berlin 58 
“ Biscuit Ware 59 
“ Cast Iron 58 
“ Covers 57 
“ Hessian or Sand 59 
“ Iron 57 
“ Metallurgists 59 
“ Meissen 58 
“ Platinum 59 
“ Plumbago. 57 
“ Porcelain 59 
“ Roasting 60 
“ Silver 59 
Crucible Moulds 60 
“ “ of Brass 136 
“ of Boxwood 136 
“ Supports 60 
“ Tongs 170 
“ Tubes for reduction 59 
Cryopherus 60 
Crystals, Models of 48 
Crystal Drainers 60 
Crystallizing Dishes 60 
“ Kettle 120 
Cubic Centimeter Flasks 125 
Cupels 61 
Cupel Furnace 99 
“ Holders 61 
“ Moulds, of Brass . 61 
“ “ of Steel 61 
Cupping Glasses 61 
Cups, Annealing 61 
“ Feeding 61 
“ Medicine 61 
“ Porous 43 
“ Seidlitz Powder 61 
Cutting Pliers 62 
Cuvettes 62 
Cylinders, Glass 62 
“ Graduated Cubic inches 63 
“ into “ Centimeters. 63 
“ “ “ Grains 63 
“ “ Grammes 63 
“ for Electric Machine 64 INDEX. 
255 
Page 
D. 
Dancing Images 76 
Dancing Plates . 76 
Daniel’s Battery 80 
“ Hygrometer 116 
“ Zincs 180 
Day and Night Thermometer 64 
Davy’s Safety Lamp : 64 
Decanting Jar 64 
“ Syringes 64 
“ Tubes 64 
Decimal Scales, Centimeters 43 
Decoction Mortars 135 
Decomposition Water Apparatus..248 
Decrepitating Iron Spoon 159 
Deflagrating Cover 64 
“ Cup 65 
Globes 64 
“ Hooks 64 
“ Jars 23 
“ Spoons 64 
“ Stands 64 
“ Taper Holder 65 
Dentists’ Furnace 100, 101 
Descroizille’s Alkalimeter 13 
Dessicators 65 
Dessicating Apparatus 65 
“ Fresenius 66 
“ Baths 71 
“ Ovens 72 
“ Pans i 65 
“ Plates 66 
Dessicator, Oblong 65 
“ Porter’s 65 
“ Schrotter’s 65 
Dialysers 66 
Diamonds for Cutting Glass 66 
a “ writing on “ 66 
Diamond Jar 76 
“ Models 48 
“ Mortars 66 
Dielectric Machine 75 
Differential Thermometers, plain.. 66 
“ “ with stopcock 
connecting. 66 
Diffusion of Gases, Apparatus for.. 85 
Digestors, various 67 
Dippers 67 
Dipping Batteries 81 
“ Needles 67 
Dischargers, Electrical various.... 76 
Dishes, Draining 68 
“ Earthern 67 
“ Iron 67 
“ Porcelain 67 
“ Roasting 68 
Displacement, Apparatus 68, 69 
Dissected Cone. 244 
Distilling Apparatus 69 
“ “ Milrrle 237 
“ “ Iron 60 
“ “ Wurtz. 70 
“ Flasks 69 
Page 
Distilling Retorts, Copper 152 
“ “ Glass 151 
“ “ Iron 152 
“ “ Lead 152 
“ “ Stone Ware.... 152 
Diving Bell 243 
Dcebereiner’s Hydrogen Lamp 70 
Dome, Porcelain 70 
“ Sheet Iron 70 
Douceleur Apparatus 244 
Drainers . 60 
Drawing Curves 71 
“ Protractors 71 
Drawing Tools 70 
Dropping Bottles 7 
“ Flasks 71 
“ Pipettes 71 
“ Tubes 71 
Druggist Mill 72 
Drummond Lamps for Petroleum.. 71 
“ “ Gas 123 
Drying Apparatus 65 
“ Baths, Copper 71 
“ Porcelain Regulator 71 
“ Electrical Regulator 72 
“ Bottles 72 
“ Oven 72 
“ “ Rammelsburg’s 72 
“ Plates 72 
“ Tubes 72 
“ 11 Liebig’s 72 
“ “ Mitscherlisch 72 
Duboscq’s Lamp 82 
“ Spectroscope .■.. 245 
Dutch Metal 72 
Dyer’s Cloth 72 
Dye Pots 42 
E. 
Earthern Dishes 67 
Edson’s Hygrodeik 242 
Electrical Apparatus 73 
“ Batteries 82, 80 
“ Bells 76 
“ Cylinders 64 
“ Egg Stand 76 
“ Flier 76 
i “ Lamps 82 
Machines 74 
“ Orrery 77 
• “ Plates ’. 76 
“ Pistol 77 
“ Roller 241 
“ Sportsman 77 
“ Stool 76 
“ Tubes 78 
“ Vacuum Tubes 79 
Electric Fire Damp Indicator Ill 
“ Measurement Apparatus.. 240 
“ Telegraph 78 
Electro Magnet on stand to lift 
Heavy Weights 243 
Electro Magnet, Page’s 78 256 
INDEX. 
Page 
Electrometer Gold Leaf 75 
“ Jar 76 
“ Pith Ball 75 
“ Thompson’s, for Elec- 
tric Measurement 83 
Electrophorus 75 
Elliptical Roller 241 
Elutriating Apparatus 83 
Enamel 84 
Enamelers File 85 
“ Knife 85 
“ Plates.. 85 
Endosmosis . 85 
Eolipile of Glass 85 
“ Lamp, Brass 85 
“ Tin 85 
Eprouvettes 167 
Equilibrium Tubes 242 
Erdmann’s Apparatus for the de- 
termination of Carbonic Acid.... 13 
Erdmann’s Float. 34 
Erlenmeyer’s Oven 103 
Etiling’s Pipette 141 
Ether Bottles 30 
“ Distilling Apparatus 85 
“ Extraction Apparatus, Bo- 
hemian 85 
Ether Extr’tion Apparatus, Mohr’s 139 
“ Jet 85 
Eudiometers, Bunsen’s 85 
Eudiometer, Hoffman’s 86 
“ Ure’s 86 
Evaporating Dishes, Glass 87 
“ “ Iron 87 
“ “ Platinum..,. 87 
“ Porcelain.. . 87 
“ “ Silver 87 
“ “ Berlin 87 
“ “ French 88 
“ “ Meissen 87 
“ “ Thuringian.. 88 
“ ‘‘ Gold Washing 88 
“ Kettles 89 
Eye Baths 89 
“ Models 89 
Evolution Flask 89 
Exsiccators 5 
F. 
Faraday’s Jets 120 
“ Retorts 151 
“ Washing Bottles 177 
Files, Enamelers 89 
‘‘ Cork 89 
File Handles 89 
Filling Tubes 98 
Filtering Apparatus, Beale’s 89 
“ “ Bunsen’s .... 89 
“ “ Copper 89 
“ “ Plantamour’s 89 
“ “ Porcelain.... 89 
Filtering Apparatus, Bell, Glass and 
Slab 90 
Page 
Filter, Calico 90 
“ Covers 56 
“ Dryer 91 
“ Holder 91 
“ Hooks 91 
“ Rings 91 
“ Stands 164 
Filtering Flasks 91 
Filters, Felt 91 
“ French Grey 91 
“ “ White 91 
Filtering Paper, Chardin 91 
“ “ French 91 
“ “ German 92 
“ “ Swedish 92 
Finger Tips, Rubber 92 
Fire Clay..... 92 
“ Damp Indicator 118 
“ “ Safety Lamps 64 
“ Syringe 92 
Fittings, Various. 92 
Flameless Lamp 14 
Flasks, Bohemian 92 
“ Bolognia 93 
“ Florence 93 
“ with tubulature on the neck 93 
“ “ “ “ bulb 93 
“ Copper 94 
“ Iron 94 
“ Gas 94 
“ Litre 125 
“ Oxygen 107 
Flints Urine Analysis Apparatus 
for 225 
Float, Erdmann’s 34 
Florence Flasks 93 
Florentine Receivers 150 
Foil Copper 51 
“ Platinum 143 
Foot, Hares 227 
Forceps, Brass 94 
“ Bending 95 
“ Cutting 95 
Jewelers 94 
“ Steel 94 
“ Stubbs 94 
“ German Silver 95 
“ Wire 95 
Forks for Gas Burners 38 
Fossils 213 
Fountain in Vacuo 95 
Formation of Water in Vacuo 95 
Fractional Distillation of Water.. 70 
Frames 95 
Freiburg Hammers Ill 
Freezing in Vacuo 95 
Frcsenius’ Acidimeter 6 
“ Arsenic Detection.... . 14 
“ Apparatus for Carbonic 
Acid in Carbonates 12 
Fresenius Chlorine Distillation... 46 
“ Dessicating Apparatus.. 66 
“ Hot Air Bath 72 INDEX. 
257 
Page 
Fresenius’ Filter Support 164 
Funnels 96 
£- Bohemian.? 96 
“ Quick Filtering, Bunsen’s. 96 
“ Filling t............- 98 
££ Fluted 96 
“ German 96 
“ Porcelain Safety 98 
“ “ Perforated 98 
“ “ Retort 96 
££ “ Percolating 98 
“ Gntta Percha 99 
“ Gntta Percha, Conical 99 
“ GuttaPercha, Spherical.. 99 
*• Plattner’s 227 
“ Separating Conical 97 
“ “ Globe Shape... 97 
Funnel Tubes, Conical 97 
“ ££ Thistle Top 97 
££ ££ Welter’s Safety.... 97 
“ £- “ “ .... 98 
“ ££ Mitscherlisch 98 
“ Supports 164 
Furnaces, Erdmann’s 99 
Porcelain 99 
' ££ for Gas ' 161 
££ “ Kerosene „....161 
“ Clay 99 
“ Chamott 99 
“ Cupelling 99 
Hibbs.... 100 
“ French Crown 101 
“ Kent 99 
££ Griffin’s 101 
“ Perrot 100 
££ Chilton’s 102 
££ Enamellers 102 
££ Lead Basin 102 
“ Carius’ 103 
“ Erlenmeyer 103 
Bunsen’s 103 
“ Combustion 103 
G. 
Galactometer 103 
Gallipots 104 
Galvanometers, Astatic 77 
“ Sensitive 77 
£‘ Tangent 77 
Galvanic Batteries 80 
“ Decomposing Cell, Bun- 
sen’s 239 
Galvanic Decomposing Cells, Hoff- 
mann’s 233 
Gas Analysis Apparatus 238 
“ Bags 104 
££ Bottles 27 
“ “ 105 
Blowpipes 25 
•£ Blow tables 24 
“ Burners 37 
Flasks 94 
Furnaces 101 
Page 
Gas Generator, Kipp’s 106 
“ Hydrogen Generator, Copper.. 106 
“ “ “ Glass. ...107 
“ Sulphuretted Generator.. 106, 107 
££ Oxygen “ 107 
“ Globes 64 
“ Holders, Pepy’s of Zinc 107 
“ “ “ Copper 107 
“ ££ for Oxygen and Hydro- 
gen • 108 
Gas Jars 23 
“ Jets 119 
“ Meter 108 
Gasometer, Bunsen’s Mercurial.... 108 
Gas Regulation Burner 108 
“ Regulator 108 
“ Pistols 108 
“ Pipettes. 108 
“ Pipette, Ettlings 108 
Gassiot Cascade ...244 
Gas Tubes 108 
Gas, Washing Apparatus 109 
Gasogenes 109 
Gauge Tubes 109 
Gauge Ring and Ball 211 
Gay Lussac Alcoholometer 11 
“ “ Alkalimeter 13 
“ “ Burettes 33 
“ “ Supports 165 
Geissler Burettes 33, 34 
“ Tubes 78,79 
£‘ Apparatus for the deter- 
mination of Carbonic Acid 12 
Geissler Potash Bulbs 147 
“ Glass Stopcock 160 
Geological Hammer Ill 
“ Specimens 206 
Gibbs’ Thermometer Tubes 173 
Glass Blowpipes 25 
“ Blowers Table 109 
“ Condensers 52 
“ ends for Burettes 109 
“ Pieces 110 
l£ Plates, ground 109 
“ “ “ 1 inch thick. 109 
“ “ Colored 109 
“ Rods 110 
“ Shades 110 
“ Stirrers 160 
“ Tubing 174 
Globes of Glass for Deflagrating 64 
Gloves, Rubber 110 
Goniometers, Hauy’s 110 
“ German 110 
£‘ Wollaston’s 110 
Graduate Glasses 110 
Graduates, Glass Minims, English. J10 
“ “ “ German.Ill 
English shape Ill 
££ French shape 111 
■£ Tumbler shape Ill 
Graduated Apparatus, 13, 33, 34, 63,64, 
85, 86, 108, 125, 129, 141, etc. 258 
j*NDEX. 
Page 
Graduates, Porcelain ... .. Ill 
Grain Weights 179 
Gramme Weights 179 
Griffin’s Blast Gas Burner 87 
“ “ Furnace 101 
“ Beakers 22 
Grove’s Battery 80 
“ Zincs 180 
Guinea and Feather Tube 247 
Guibourg’s Displacement Apparatus 69 
Gundlach’s Microscope 128 
Gutta Percha Funnels 99 
“ Measures 127 
Gyroscopes .. 244 
H. 
Hammers... Ill 
“ Blowpipe Ill 
Geological Ill 
,l Mineralogical Ill 
“ Plattner’s Ill 
“ Watchmakers’ Ill 
“ Water 177 
Handles Ill 
Hand Glass Ill 
Harcourt’s Ivory Scale 116 
Hardness of Mineral Tests 211 
Hare’s Gallows Screw Connector.. 55 
Hauys’ Goniometers 110 
Head of Hair 75 
Heat, Apparatus for 241 
Helix Contracting 77 
“ on Stand 77 
“ with ring armature 77 
Hemisphere, Biot’s 76 
“ Magdeburg 247 
Hessian Crucibles 59 
Hibbs’ Furnace 100 
“ Muffles 136 
Hiero’s Fountain 76 
Hinrich’s Physics 229 
Hoffman’s Apparatus, various, 232,233, 
234, 235 
Hoffman’s Supports 164 
“ Watch Glass Clamps.... 47 
“ Holders for Flasks 164 
“ Flame Apparatus 245 
Holders for Burettes 162,163 
“ for Caustic 112 
“ for Crucibles 164 
“ for Funnels 164 
“ for Platinum Spoons and 
Wire 112 
Holders for Pipettes 163 
‘ ‘ Mitscherlisch’s 164 
“ Retort 165 
“ Test Tube 164 
“ for Salts in Lamp Flames. 159 
Holsteric Barometer 112 
Holtz’s Electric Machine 73 
Hot Water Funnel 89 
Hooks Deflagrating 64 
Page 
Hydroclese 112 
Hydraulics, Apparatus for 242 
Hydrogen Generator 107 
“ Pistol 108 
“ Gas Holders * 108 
“ Gas, Bunsen’s Apparatus for239 
“ Gas Lamps 70 
Hydrometers 113. 114,115 
Hydrometer Jars 115, 117, 118 
Hydrometer, Nicholson’s 115 
Hydrostatic Balauce 248 
“ Press 247 
Hygrodeik, Edson’s 242 
Hygrometers, August’s Psychrom’r 116 
“ Daniel’s 116 
“ Mason’s 116 
“ Saussure’s 116 
I. 
Ice Freezer, Carre’s 116 
“ Hoffman’s 116 
Ignition Tubes 116 
Illustration of Weights and Pulleys 244 
Imps 31 
Inclined Plane 244 
Indicator of Fire Damp 116 
Induction Coils 78 
Indigo Prism. 147 
Inertia Apparatus 244 
Infusion Jars 118 
Inorganic Chemistry Apparatus.. .217 
Ingot Moulds 136 
Insulated Stool 76 
Illuminating Egg Stand 76 
Images, Dancing 76 
Iron Ladle 117 
“ Blowpipe Spoon 159 
Ivory “ “ 156 
J. 
Jars, Anatomical 119 
“ Battery, plain 117 
“ “ Fluted 117 
“ Chloride of Calcium 44 
“ Cold Cream Porcelain 117 
“ Conserve 117 
“ Decanting 64 
“ Hydrometer, boxwood feet... 117 
“ “ glass feet, swelled top. 117 
“ “ “ “ with ring 
around the neck 118 
Jars, Hydrometer, glass feet, lipped 118 
“ Infusion 118 
“ Leech 118 
“ Leyden 118 
“ Mercury 118 
“ Ointment, of Glass 118 
“ Porcelain 118 
“ “ “ knobbed, 119 
“ Powder, of Porcelain 118 
‘ ‘ Preparation 119 
“ Specie 118 INDEX. 
259 
Page 
Jets, Hydrogen 119 
“ Wash Bottle 119 
“ Bunsen Burner, flat flame.... 120 
“ to produce a blast 120 
“ Berzelius’ ..120 
“ Faraday’s 120 
Jewelers’ Globes 120 
Julep Tubes..., 120 
K. 
Kemp’s Regulator 71 
Kent’s Furnaces 99 
“ Muffles 136 
Kettles, Porcelain 120 
Kipp’s Apparatus for Sulphuretted 
Hydrogen 105 
Kipp’s Apparatus for the determin- 
ation of Carbonic Acid 12 
Knife for Blowpipe 120 
11 “ cutting cork 120 
li 11 “ tubing 120 
L. 
Labels, Blank 120 
“ Chemical 120 
Label Book, Mawson’s 120 
Lactometers 114 
Lactoscope, Vogel’s 120 
Ladles, Iron 121 
“ Porcelain 121 
Tinned 121 
Lamps, Berzelius 122 
“ Bunsen’s Gas.. — 35 
“ Alcohol, on tripod 121 
“ Aphlogistic 14 
“ Davy’s Safety 64 
“ Drummond, for Coal Oil.... 71 
“ Drummond, Duboscq’s 123 
“ Electric 83 
“ Engravers’ 123 
“ Flameless 14 
“ Furnaces 99 
“ Gas Blast 37 
“ Hydrogen 70 
“ Laboratory 123 
“ Magnesium 123 
“ Muller’s 122 
“ Oxhydric 123 
“ Perfume 121 
“ Plattner’s Blowpipe 123 
“ Rose’s 122 
“ Russian Alcohol Blast 154 
“ Spirit, Brass 121,122 
“ “ Glass 122 
“ Student’s .123 
“ Stands 165 
“ Wicks 124 
Lang’s Alcohol Lamp 121 
Lead, Basket 19 
“ Measures 127 
“ Retorts 152 
“ Trays 124 
Jars 118 
Page 
Leaning Tower 244 
Leclanche’s Battery 80 
Leech Tubes 124 
“ Spoon ...159 
Lenses, Coddington 124 
“ Horn Setting 124 
“ Magnifying 124 
“ Stanhope 124 
“ Photographic 125 
“ Watchmakers’ 125 
“ Convex and Concave, etc-125 
Leslie’s Alkalimeter 18 
“ Differential Thermometers. 66 
“ Freezing Apparatus 95 
“ Graduated Cylinder 63 
“ Radiator 241 
Leyden Jars 118 
“ “ movable coatings 76 
“ “ with bell 76 
Liebig’s Apparatus for Organic An- 
alysis 246 
Liebig’s Aspirator 15 
“ Charcoal Furnace for Com- 
bustion 49 
Liebig’s Condensers 52 
“ Drying Tubes 72 
“ Gas Bottle 105 
“ Potash Bulb 147 
“ Retort, double Tube .151 
“ Safety Limb 125 
Lippincott’s V apor Index 77 
Limb, Drying, Liebig’s 54 
“ Safety “ .125 
Light, Refraction -of 125 
“ Recomposition of 125 
Litmus Paper, various colors 125 
Litre Bottles 125 
‘ ‘ Flasks, various 125 
Loadstone 244 
Lubin’s Cassolettes 43 
Luminous Plate 76 
M. 
Machines for Coffee making 48 
Magic Lanterns 125 
“ “ Slides 244 
“ Circle 77 
Magdeburg Hemisphere 247 
Magnesium Ribbon and Wire 127 
11 Lamps 123 
Magnetic Dipping Needle 126 
“ Needle on Stand. — .....127 
“ Toys 127 
Magnetism, Apparatus for 243 
Magnets, Bar 127 
“ Compound... 127 
Circular 243 
“ Electro 243 
•1 Horseshoe 127 
“ Revolving 243 
on Stand 243 
“ with Wheel '.rmature.. .244 
Magneto-Electric Machine.. ..126, 127 260 
INDEX. 
Page 
Magnifying Lenses 124 
Marchand’s U Drying Tubes 44 
Mariotte’s Laws, Apparatus 127 
Marsh’s Arsenic Test 14 
Mason’s Hygrometer 116 
Mattrasses 127 
Mawson’s Labels 120 
Measures, Assayers’ 127 
“ Glass Ill 
“ Gntta Percha 127 
“ Graduated 110 
“ Lead 127 
“ Metre 128 
“ Porcelain 127 
Measuring Bottles 125, 129 
“ Cylinders 63 
“ Flasks 125 
Mechanical Powers 244 
Medical Tests, Apparatus for 222 
Melting Furnaces 100 
Mendelsohn’s Burners 38 
Mercury Bottles 127 
“ Box 127 
“ ' Jar, Glass 127 
“ “ Porcelain 127 
“ Shower 128 
“ Trough 127 
Mercurial Receiver .127 
Metallic Plates for Dancing Figures 76 
“ Syringe 166 
“ Thermometers 169 
Metre Measures . 128 
Microscopes, Aplanatic 125 
McCullough’s Manual 10 
Microchemical Flasks . 13 
“ Funnels 96 
“ Retorts ...152 
“ Watch G1 ass Heaters 38 
Microscopes, Large 128 
“ Pocket 124 
“ Small 128 
“ Solar 129 
Microscopic Covers 129 
“ Dishes, Glass (No. 1436).22 
“ Slides 129 
Milk, Essayers 114 
Milk Test, Optical 120 
Minerals 206 
“ for Blowpipe reactions....210 
“ Cabinets of 213 
“ Crystaline colors 209 
“ for Cleavage 211 
“ for Fusibility 211 
“ for Hardness 211 
Mineralogical Hammers Ill 
Mineralogists’ Slates 129 
Minim Glasses 110 
Mirrors, Convex and Concave 245 
Misers Plate 129 
Mitscherlich’s Apparatus for Arsenic 
Detection 14 
Mitscherlich’s Drying Tubes 72 
“ Funnel Tubes 98 
Pag; 
Mitscherlich’s Polarization Appara- 
tus 145 
“ Potash Bulbs 147 
Mixing Bottles 129 
“ Capsules, brass 129 
“ “ horn.... 129 
“ Jars 129 
Model showing motions of human 
eye 245 
Models of Crown Diamonds 48 
“ of Crystals 48 
“ of Eye 89 
“ of Precious Stones 48 
“ of Machinery 130 
“ of Mining Machinery and 
Tools '. .130,133 
of Furnaces, &c 131, 132 
“ of Telegraph 78 
“ Water-wheels, &c 133 
“ Engines 131 
Mohr’s Alkalimeter 13 
“ Apparatus for determina- 
tion of Carbonic Acid 12 
Mohr’s Burettes 34 
“ Chlorine Safety Pipette.... 46 
“ “ Gas Apparatus.... 46 
*• Clamps 47 
“ Distilling Apparatus 46 
“ “ “ 237 
“ Perculators 139 
“ Pinchcock 140 
“ Pipettes 141 
‘ ‘ Potash Bulbs 147 
Monochromatic Light Apparatus.. 133 
Mordaunted Cloth 133 
Mortars, Agate 134 
“ Diamond 66 
“ Emulsion 135 
“ Glass 135 
“ Iron 135 
“ Mixing 135 
“ Porcelain 135 
“ Powder 135 
“ Steel 136 
“ Wedgewood 136 
Morton’s Monochromatic Lamp 133 
Moulds, Boxwood 136 
“ Brass 136 
“ Charcoal 136 
“ Crucible 136 
“ Cupel (forming) 136 
“ Ingot 136 
“ Steel (for cupelling) 136 
“ for forming Square Blocks 
of charcoal 228 
Moulds, Scorifier 136 
“ Scorifying 155 
“ Suppository 136 
Mouth Pieces, Horn 133 
“ “ for Inhaling 134 
“ “ Ivory 1.34 
“ “ Wood ....134 
“ Blow Pipe 25 INDEX. 
261 
Page 
Muffle Furnaces 99 
Muffles, French Clay 136, 137 
“ Hibb’s 136 
“ Kent’s 1.36 
“ Sand 136 
Mulder’s Absorption Meter 133 
Mullers, Agate 10 
“ Glass 137 
Mtiller’s Lamps 122 
Munktell Filtering Paper 92 
Murrle’s Apparatus 237 
N. 
Needles, Astatic 77 
Needles, Dipping 67 
“ Magnetic 127 
Nicholson’s Hydrometers 137 
Nipper Taps 140 
Nipple Shells 137 
Nitrogen Bulbs 137 
“ Limbs 137 
“ Tubes 51 
“ “ Boh .167 
“ Determination Apparatus 238 
Nitrous Oxide Gas Apparatus 137 
Noebel’s Silt Apparatus 83 
Nursing Bottles 137 
“ “ Corks 137 
“ “ Tops 137 
O. 
Objects for Spectral Analysis, col- 
lection 48 
Oechsle’s Hydrometer 114 
Oil Receivers 138 
“ Hydrometers 114 
“ Lamps 123 
“ Drummond Lamp 71 
Optical Apparatus 244 
Organic Analysis Apparatus 246 
Orrery, Electrical 77 
Otto’s Acetimeter 6 
“ Hydrometer 113 
Oxhydrogen Blow-pipes 25 
“ Lamps 123 
“ Bunsen’s Apparatus, for.239 
Oxygen Retorts 152 
Ozonometer, Sieman’S 138 
“ Electrical 138 
P. 
Page’s Revolving Electro Magnet.. 138 
‘‘ Rotating Apparatus 138 
Palettes 139 
Pans, Bed 139 
“ Dessicating 65 
“ Expectorating 139 
“ Gold Washing 139 
“ Horn 40 
Paper, Bibulous 138 
“ Filtering 92 
“ Filters 91 
“ Glazed 138 
I Page 
’ Paper, Joseph 138 
“ Litmus 138 
“ Neutral 138 
“ Parchment 138 
“ Tea.. 139 
“ Turmeric 139 
“ Weights 139 
| Parabolic Reflectors 139 
: Parting Flasks 92 
! Pencils, Carbon 41 
Pepy’s Gas Holder 107 
Percolators 139 
Perfume Bottles 139 
Permanganate Burettes 33 
Perrot’s Furnace 100 
Pestle’s, Porcelain 139 
Phosphorus Apparatus 64 
Photographic Baths 140 
Cuvettes 62 
“ Dishes 140 
“ Lenses 125 
Photometers 139 
Photometric Burners 139 
“ Candles 139 
“ Meter 108 
Pill Boxes 140 
“ Tiles 140 
Pincers 140 
Pinchcocks, Brass 141 
“ Bunsen’s 141 
“ Mohr’s 140 
“ “ with Steel Spring 141 
“ with Screw and Bent Lip 140 
Pinchcocks, Squibbs’ 141 
Pipes for Hydrogen Bubbles 141 
“ for Organs 141 
Pipettes, Plain 141 
“ Ball or Cylindrical 141 
“ Dropping 141 
“ Ettlings 141 
“ Filling 141 
“ Fixed 141 
“ Graduated 141 
Pistol Electric 77 
Pith Balls 142 
“ Ball Electrometer 75 
“ Birds 142 
“ Images ..142 
Plantamour’s Funnel 87 
Plate Electrical Machine 75 
Plate, Rod Hook, and Check Screw. 142 
Plates, Brass 142 
“ Dessicating 66 
“ Earthen 142 
“ Glass 109 
“ “ Colored 109 
“ Luminous 76 
“ Miser 77 
“ Perforated 142 
“ Porous 142 
“ Metallic Z.... 76 
Platinum Boats 142 
“ Covers 143 262 
INDEX. 
Page 
Platinum Crucibles 143 
a Dishes142 
“ End Forceps94 
“ End Tongs142 
“ Foil143 
“ Jets142 
“ Points142 
“ Sheet143 
“ Scrap142 
“ Spatulas142 
“ Sponges142 
“ Spongy199 
“ Spoons142 
“ Tips142 
“ Wire143 
Plattner’s Apparatus for Blow-pipe 
Assay227 
Plattner’s Blow-pipes 26 
“ Crucible Moulds 60 
“ Charcoal Borer 43 
“ Porcelain Capsules 41 
“ Mixing Capsule129 
“ Roast152 
“ Sieves156 
“ Triangle172 
Pliers 143 
Plumbago Crucibles and Covers... 58 
Pneumatic Apparatus247 
“ Cistern143 
“ Pumps, various.143,144 
“ Troughs, various145 
Pocket Compasses 52 
Poelons Fire clay59 
Polariscope176 
Polarization Apparatus145, 146 
Pomades Glass146 
“ Porcelain118 
Porous Cups 43 
Porous Plates143 
Porter’s Dessicator 65 
Potash Bulbs, various147 
Pipettes147 
Powder Scoops155 
“ Spoons157 
Prat-Dumas’ Filtering Paper 91 
Precipitating Glasses.147 
Preparation Glasses, Flat Bottom.. 147 
“ “ Round Bottom. 173 
“ “ Jars, Various...119 
Pressure Boards for Gas Bags104 
Prince Rupert Drops153 
Prisms, Acromatic148 
“ “ Mounted245 
“ for Dark Chamber147 
“ Equilateral148 
“ “ Mounted245 
“ Hollow147 
“ “ Bottle147 
“ Flint Glass147 
“ Nicol’s148 
Proof Glasses148 
Pulse Glasses148 
Pumps, forcing148 
Page 
Pumps, Hydraulic148 
“ Bunsen’s Quick Filtering . 89 
“ for Fire Engine, Illustra- 
tion 148 
Pumps, Pneumatic246 
Punch Stick148 
Pungents, Various148, 149 
Pyramid Filter Case Japanned.... 91 
Pyrometers149 
Pyle’s Manual 10 
Q. 
Qualitative and Quantitative Sets.227 
Qualitative Blow-pipe Sets228 
Qualitative Chemical Set of Appa- 
ratus 221 
Qualitative Chemical Analysis, Stu- 
dents Sets231 
Quetschhahne140, 141 
Quick Filtering Apparatus 89 
Quilled Receivers150 
Quantitative Urinary Analysis.... 221 
“ Blow-pipe Set-?229 
“ Chemical Students Set.230 
Quevenne’s Cremometer57 
R. 
Radiator, Leslies149 
Rammelsberg’s Burette 34 
“ Hot Air Bath72 
Rasps149 
Reagents, list of183 
Reagent Boxes149 
“ “ with Blow-pipe.... 149 
“ Chests149 
Receivers, Florentine150 
“ EarthenWare151 
“ Porcelain151 
“ Plain149 
“ Quilled150 
“ Tubulated150 
“ Tubulated & Stoppered.150 
'• Tubulature at the side. 150 
“ with Rod, Hook & Ball.247 
Reduction Tubes151 
Reflectors139 
Relative Value of Weights and 
Measures250 
Relative Value of Troy French 
Weights250 
Retorts, Clark’s151 
“ Copper152 
“ double bulb in the neck .. 151 
“ “ tube 151 
“ Faraday’s151 
“ Iron152 
“ Michrochemical152 
“ Lead152 
“ Plain151 
“ Platinum152 
Relative value, French Metre, Litre, 
and Gramme250 
Retorts, Porcelain152 INDEX. 
263 
Page 
Retorts, Tubulated and Stoppered 
of Glass 151 
Retorts, Stoneware 152 
“ Funnels 96 
“ Supports 165 
Revolving Electro Magnet 78 
Reverberatory Furnaces 100 
Riders of Aluminum 152 
Riess’ Electrical Condenser 53 
Rings, Concentric 152 
“ Straw 161 
Roasting Charcoal 152 
“ “ forms 153 
“ Dishes 152 
Roasts, Plattner’s 152 
Rods of Glass, Electric 153 
“ Glass 153 
Rod of Shellac, Electric 153 
Rods, Stirring 160 
Rose’s Burners 38 
Rose’s Crystallographic Models. 48 
Rubber Balls 153 
“ Finger Tips. 153 
“ Gloves 110 
“ Sheet 153 
“ Stoppers 153 
Syphon Primers 153 
“ Urinals 153 
Ruhmkorff’s Coils 78 
Rupert Drops 153 
Russian Spirit Lamps 154 
s. 
Saccharimeters 145, 146 
Saccharometers , 114 
Safety Funnels 97 
Safety Lamp 64 
Sal lerons Alembic 12 
Salometer 154 
Sand Burners 38 
Sand Baths, various 154 
“ Crucibles 59 
“ Glasses, various 154 
Saussure’s Hygrometers 116 
Saw to Cut Charcoal 154 | 
Scales, Apothecaries 154 
“ Button 154 
“ Prescription 154, 155 
Scale Pans 155 
Scheibler’ Apparatus 7 
“ Colorimeter 39 
Schuster’s Dropping Glasses 71 
Schulze Silt Apparatus 83 
Scissors, ordinary 155 
“ Tinsmiths’ 155 
Schrbtter’s Apparatus for Analysis 
Carbonates 12 
“ Dessicator 65 
Scoops, of horn 155 
Scorifiers, Freiburg 155 
“ Urn shape. 155 
Scorifier Holders, of Iron 155 
“ Moulds 136 
Page 
Scorifier Tongs 171 
Scorifying Moulds 155 
Scratch Brushes 155 
“ Brush Wire 155 
Screen for Tripod 155 
Screws, Brass head 155 
Sefstrom’s Forge 241 
Seidlitz Powder Cups 155 
Separating Bottles 30 
“ Funnels 96, 97 
Sets of Solids .244 
“ of Apparatus, various.214, to 231 
Serrin’s Lamps 62 
Shades Glass, Lily 155 
Sharpeners for Knives 15' 
Shellbach’s Support 165 
Sieves, Bolting Cloth 156 
“ Box, Griffin’s 156 
“ Brass..... 155 
'• Horse-hair 155 
“ Plattners 156 
“ Silk 156 
Sieman’s Ozonometer 138 
Silicated Filter 89 
Sillimann’s Chlorine Gas Apparatus 46 
Silver Assay, wet way Stopcocks.. 160 
“ Pure, for Mineral Tests 156 
“ Capsules 40 
“ Crucibles 59 
Simpson’s Nitrogen Bulb 49 
Slips of Glass 156 
“ Porcelain 156 
Smee’s Battery 80 
“ Zincs 180 
Smelling Bottles 149 
Soda Paper 156 
“ “ Cartridge Mould 136 
“ Water Apparatus 156 
Sodium Spoon 156 
“ Flame Apparatus 156 
Soils, Analysis Apparatus 83 
Soleil-Ventschke’s Saccharimeter. .145 
Soufflets 109 
Spatulas Bone 156 
“ Brass 157 
“ Glass 157 
“ Ivory 156 
“ Iron 157 
“ Platinum 157 
“ Porcelain 157 
“ Steel, various 157 
Specific Gravity Balances 16, 17 
“ “ Bottles 157 
“ “ “ in cases...158 
“ “ Flasks 158 
Spectra of Stars & Metals on Charts 45 
Spectroscope, Brownings hand.... 158 
“ “ two prisms.158 
Heidelburg 158 
Spectroscopic Chart 45 
“ Lamps for Alcohol.. 159 
“ “ “ Gas... 159 
11 Stands 159 264 
INDEX. 
Page 
Spectroscopic Support, Mitscher- 
lisch’s 164 
Spectroscopic Salts, in set 48 
Spectrum, Lantern for showing on 
Screen 159 
Spirit Lamps, various 122 
Spiral or Spotted Tube 159 
Spoons for Blowpipe 159 
“ Bone 159 
“ Brass 159 
“ Desert 159 
“ Dipping, of Glass 159 
“ Horn .159 
“ Iron 159 
“ Leech 159 
“ Platinum 142 
“ Porcelain 159 
“ Tea, of Glass and Porcelain 159 
“ Table. 159 
Sprengel’s Mercurial Pump 143 
Squibb’s Pinchcocks 141 
Stanhope Lenses 124 
Steamtight Determ’tn Apparatus.235 
Sticks for breaking Glass, of Coal.. 159 
Stills, of Copper 160 
Stirrers, of Glass 160 
Stockhardt’s Chemistry set 224 
Stool, Insulating 160 
Stopcocks, Brass, various. .. .160, 161 
“ Earthenware, various.. 160 
St. Claire de Ville Combustion Fur- 
nace 50 
Stopcocks, Glass, various 160, 161 
“ Silver wet way Assay.. 160 
Stoppers, Rubber 153 
Storer’s Combustion Furnaces 49 
Storm Glasses 161 
Stoves, Gas 161 
“ Kerosene 161 
Straining Baskets, Earthenware. .161 
“ ‘‘ Porcelain 161 
“ Dishes “ 161 
“ Plates, Earthenware 161 
Straw Rings 161 
Students Qualitative Chemical set.231 
Quantitative “ “ .230 
Stubb’s Forceps 94 
Streak of Mineral Tests 129 
Students Chemical Set 224 
Suction Tubes - 98 
Sulphuretted Hydrogen Gas Appar- 
atus 105, 106, 107 
Sulphuric Acid Apparatus 9 
“ Testing Apparatus.233 
Supports, Burette 162, 163 
“ Crucible 164 
“ Filter 164 
“ Funnel 164 
Griffin’s 164 
“ Hoffman’s 163, 164 
“ Retort 165 
“ Test Tube 164, 165 
“ Japanned for Flasks 165 
| Page 
■ Supports, Mitscherlisch, for Exam- 
ination before the Spectroscope.. 164 
■ Supports, Fresenius 164 
“ Table 164 
“ Gay Lussac’s 165 
“ Shellback 165 
Swedish Filtering Paper 92 
Swimmers 34 
Syphon, Acid 9 
“ Glass plain 166 
“ Pipettes 166 
Syringes, Fire, of Glass 166 
“ Glass, small 166 
“ Metallic 166 
T. 
Table Supports 164 
Tables for Glass Blowers 109 
Tanks for holding Solutions 166 
Tantalus Cup 166 
Tapers to burn in Oxygen 166 
“ Wax 166 
Teats, of Cork 55 
Telescope 166 
Tellurian 166 
Telegraph Working Model 78 
“ ClockWork 78 
Tests, Blowpipe .226, 227 
Test Chests 149 
“ Dishes 167 
“ Glasses, conical 167 
“ “ Microchemical 167 
” Lead Measure 167 
“ “ Sieve 167 
“ Metals 210 
“ Marsh’s Arsenic 167 
“ Paper .167 
*• Solutions 183 to 205 
“ Spoon with Spatula 157 
“ Tubes, Bohemian 167 
“ “ French and German... 167 
“ “ in nest 167 
“ “ on foot 167 
“ “ stoppered 168 
“ “ Brushes 32 
“ “ Holders, Brass 168 
“ “ “ Wire 168 
“ “ “ Wood 168 
“ “ Supports 165 
Testing Slabs 168 
Theatre Pantin 168 
Thermo-Electric Pair 168 
“ “ Pile 168 
Thermometers, Axillary 168 
“ Beer 168 
“ Centigrade 168 
“ Chemical 168 
“ Day and Night 169 
“ Differential 169 
“ Fahrenheit 169 
“ House 169 
“ Medical 169 
“ Metallic 169 INDEX. 
265 
Page 
Thermometers, Sugar House 169 
“ Window 169 
“ Milk Glass Seale... 169 
“ Milk Scale 169 
“ Paper “ 168 
“ Reamur 169 
Thermometer Tubes 169 
Thieves 169 
Thompson’s Electrometer 83 
Thunder House 170 
Tin Foil 170 
Tissue Figure 170 
Tongs, Coal 170 
“ Crucible 170 
“ Cupelle 170 
Scorifier 171 
“ Galvanized Iron 171 
“ German Silver 170 
“ Iron 170 
“ Nickleized - 170 
“ Steel 170 
Tools for Blowpiping 227 
Torricellian Experiment 171 
Touries 171 
Trays, Porcelain 171 
“ Lead 171 
“ Wood 172 
Trellis top 172 
Triangles, Blowpipe 172 
“ Glass 172 
“ Porcelain 172 
“ Wire 172 
Trimming Hammers Ill 
Tripods, Brass —172 
“ Iron 172 
‘ ‘ Galvanized Iron 172 
“ Wrought “ 172 
Troughs, Mercury 128 
“ Combustion 51 
Tubes, Arsenic 15 
Chloride of Calcium 45 
*• Combustion 51 
•• Condensing 53 
“ Connecting 54 
“ Delivery 173 
*• Drying 72 
Filling 98 
“ Gas 108 
“ Geissler’s 78 
“ Julep 120 
“ Liebig’s Condensing 173 
“ for Musical Sounds 173 
“ Phosphorescent 173 
Sealing .....173 
“ Spiral Electric 173 
“ T 173 
“ U 173 
“ U, with Bulbs 173 
“ U, with Draining Tube 173 
“ “ 11 “ and 
Stopcock 173 
Tubes, Specimen 173 
“ Vaccine 173 
Page 
Tubes, Vogel’s * 174 
Tubing Barometer 174 
“ Bohemian 174 
“ Capillary 174 
“ Colored 174 
“ Combustion 174 
li Earthen 176 
*• French 174 
“ Free of Lead 174 
“ Lead 174 
Porcelain 176 
“ Thermometer 176 
“ Rubber, Black 176 
“ Vulcanized 176 
Turmeric Paper 176 
Twaddle’s Hydrometers 115 
Twine 176 
u. 
Universal Furnace 102 
“ Hydrometer 114 
Universal Supports, Wood. 165 
“ 11 Squibbs’ 250 
United States Custom House Alco- 
holometers - 10 
Upcast and Downcast Draught 
Model -176 
Ure’s Alkalimeter 13 
“ Eudiometer 86 
Urinals, of Glass 176 
“ Rubber 176 
Urine Hydrometers 115 
“ Test Apparatus Flint’s 225 
“ Qualitative Analysis Test 
Apparatus 221 
Urine Volumetric Analysis Appar- 
atus 221 
V. 
Vacuum Tubes 79 
Vapor Index, Lippincott’s 177 
Vases, Earthen 177 
“ Glass 177 
V Tubes 177 
Vials, Homeopathic 177 
“ Sample 177 
Vogel’s Gas Bottle Tubes 174 
“ Optical Lactometer 120 
Volumetric Analysis, Apparatus for 219 
Von Babo’s Sulphuretted Hydro- 
gen Apparatus 106 
Von Babo’s Burner 36 
Vnlcan Burners 38 
Van Brunt’s Electrical Condenser. 74 
w. 
Washing Bottles 177 
“ “ Faraday’s 177 
“ “ Vogel’s 174 
“ WoulfPs 180 
“ Gas Apparatus of Porce- 
lain 109 
Watch Glasses, Bohemian 177 266 
INDEX. 
Page 
Watch Glasses, French 177 
“ Glass Holders, various 47 
“ Makers Hammer Ill 
“ Springs 177 
Water Baths, Copper 177 
“ “ Porcelain 177 
“ “ Nickelized 177 
“ Distillation Apparatus 69 
“ Decomposition 232,233,239,248 
“ Freezing in Vacuo 95 
“ Hammers 177 
Wei ghts and Pulleys 244 
“ Various 178, 179 
Welter’s Safety Tubes 97 
Whirling Table 244 
Wilson’s Chemistry set 216 
Wild’s Saccharimeter 145 
Wollaston’s Cryopherous 60 
“ Goniometer 110 
Wetherell’s Apparatus for - deter- 
mining Carbonic Acid in Carbon- 
ates 12 
Page 
Wire, Brass 179 
“ Copper 179 
“ 11 Silk Wound 179 
“ Gauge 179 
“ Iron 180 
“ Magnesium 179 
“ Piano 179 
Will & Varrentrapp’s Nitrogen 
Bulbs 137 
Wirtemberg Syphon 243 
WoulfPs Apparatus 280 
“ Bottles 31 
Worms, Condensing, various 54 
Wurtz Distilling Apparatus 70 
z. 
Zinc Filings 180 
“ Sheet 180 
Zincs for Bichromate Batteries.... 180 
“ “ Bunsen’s Battery 180 
“ “ Grove’s “ 180 
“ “ Smee’s “ 180 al Ex' 
ST PREMIUM 
BEN. 
SCLAV STREET 
—- 
- ' : - i I 
AL 
I - AND 
k ■ PURITY AND RARITY | 
II Bmm®en Buraev 
atu/C$ -a 
C& dd eafatded /Aey zu/fy 
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E. B. BENJAMIN. 
ERRATA, 
Price of Potassa Cyanide, C. P. T., should be 25 cents per oz. 
“ Tin Bisulphide, should be 65 cents per oz. No. 10 Barclay Street, 
New York, November 1, 1876. 
Thanking my many kind patrons for their generous support the 
past years, I beg respectfully to present this list to their careful 
perusal and attention. 
The long established and celebrated house of Dr. Trommsdorff 
having granted me extra facilities on their pure chemical pro- 
ducts, I beg permission to present to my kind patrons the following 
low prices for rare and pure chemicals, prefacing the same with 
the observation, that as I have no trade for drugs, buyers will per- 
ceive that I have no temptations to substitute ordinary chemicals 
for pure; therefore, the following list is intended for only the 
best article of its kind of the sort named. 
There is also added to the List of Chemicals, some few new styles 
of Apparatus which are not in my catalogue, and I beg to add that 
I am also making material reductions in such American-made 
articles as the lower prices of labor at this time warrant. For ex- 
ample: Combustion Furnaces, 25 Burners, quoted formerly at $50.00 
I now sell at $40.00; ordinary Bunsen Burners, at $7.00, net, the 
dozen, &c., &c. 
Some of my old patrons have asked if there is a reduction in the 
best foreign goods. In reply, I beg to say that there is rather an 
advance abroad. The R. Berlin Factory have advanced prices 
from 30 to 50 per cent., and the best Bohemian Glass is advanced 
10 to 15 per cent., while the duty within the past three years is about 
10 pei* cent, more on tariff before that time. Hence, reduction in 
prices would likely mean poorer goods. 
Buyers will kindly compare the German and Bohemian glass- 
ware as to quality, and as there is about 50 per cent, difference in 
cost abroad, any ordinary offer of discount is not likely to cover the 
difference in quality, any more than such discount will cover the diff- 
erence between Semi and Royal Porcelain. By comparing, for ex- 
ample, the Bohemian Funnels No. 2318 with the German Funnels 
No. 2322. an approximation of the difference may be arrived at. 
The genuine Bohemian Flasks and other glassware, may be dis- 
tinguished from the German, French, and American by a delicate 
greenish tint across the tops of the vessels; other glass, French 
especially, being nearly white, or straw-color tint. 
PRICES OF GOODS. E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
Again, the Beakers ordinarily quoted as 1/3 are identical in size 
with my 0/2, and those called 1/5 are identical with my 0/4, &c. 
—my estimate of capacities allowing for boiling. The sizes named 
by me are the same as filled in Europe, and I am not responsible for 
sizes made up here by any other dealer. A comparison will show 
that my prices are, and have been very low, and so of other goods 
RECOMMENDATIONS, 
Those of my patrons who have always taken an active interest in 
my success, will be pleased to learn that the Prize Medal has been 
awarded to me, alone, at the International Exhibition at Philadel- 
phia, over all competitors in the United States, “ for Pure and 
Rare Chemicals and Chemical Apparatus of excellent design and 
finish,” by the Judges in the group comprising this class of goods. 
The Judges are: Charles A. Joy, Ph. D., Professor of General Chem- 
istry, Columbia College, N. Y.; F. A. Genth, A M. M. D., Pro- 
fessor of Analytical Chemistry, University of Pennsylvania, 
Philadelphia; Dr. J. Lawrence Smith, the celebrated Chemist of 
Louisville, Ky.; Prof. C. F. Chandler, Ph. D., M. D., LL.D., Pro- 
fessor of Analytical and Applied Chemistry, School of Mines, 
Pharmacy, <tc.; Prof. J. W. Mallett, Ph. D., University of Vir- 
ginia, and the following eminent gentlemen from Europe, viz.: 
Dr. William Odling, F. R. S , of Great Britain, chief among Eng- 
lish chemists; R. Van Wagner, of Germany, Editor of the Jahres- 
bricht der Technolog is dies Chemie ; J. F. Kuhlman fils, of Lisle, 
France, probably the largest manufacturer of chemicals in the 
world; Prosper de Wilde, Belgium, and Emanuel Paterno, Italy, 
all of whom are justly celebrated in the scientific world. The 
award of which these renowned gentlemen have deemed my goods 
worthy, will, I trust, stimulate my countrymen to encourage all 
efforts to place this establishment on a par with any other abroad. 
I have lately secured the assistance of Mr. R. T. Deakin, of Phila- 
delphia (senior partner of the firm of R. T. Deakin & Co., Brass, 
Syringe, and Pump Makers,) who thoroughly learned his trade of 
working in brass apparatus of every kind in England, and whose 
work is well known to those who have used it to be of the very best 
character. He will take entire charge of all manufacture and re- 
pairing of brass apparatus, which will be guaranteed to be of the 
very best quality and workmanship. 182 
E. B. BENJAMIN’S DESCRIPTIVE CA1ALOCUE 
ABBREVIATED TERMS AND TRA1)E MARKS, 
USED IN THIS WORK. 
Sol.=Solution ; Precc.=Precipitated; lb.=pound ; oz.=ounce; 
dr.=drachm; gr.=grain; grm.=gramme; Mg.=Milligramme; C. 
C.=Centimeter; pt.=pint; qt.=quart; gal.=gallon; Opt.=best, 
next to pure ; pure=next to C. P.; C. P.=Chemicallypure; U. S. P. 
=United States Pharmacopoeia; Puriss=extra C. P.; T=Tromms- 
dorff’s; M.=Merck’s; Spec.=Specimen; Com’l=Commercial; com. 
=common; Sub.=Sublimed; F. F.=Forte Fortisimo, or very strong; 
F. F. F. F.=Double; Conc.=Concentrated; Fren. or F. T.=Fre- 
senius’ Test; Sp. Grav.=Specific Gravity; Am.=American. 
COMPARATIVE TABLE OF WEIGHTS. 
1 pound Avoirdupois, = 7000 grains. 
1 ounce “ — “ 
1 drachm, = 54.69 “ 
28.35 grammes, = 1 ounce Avoirdupois. 
31.10 “ = 1 “ Troy. 
453.60 “ =1 pound Avoirdupois. 
1 “ = 15.43| grains. 
100 “ = 3.53 ounces Avoirdupois. 
100 “ = 3.21| “ Troy. 
1000 “ =1 Kilo 
1 Kilo., —■ 2.20| lbs. Avoirdupois. PRICE LIST. 
, A. 
Acetone, C. P Per oz., $ .30 
Acid, Acetic, U. S. P., Sp. Gray., 1047 Per lb., .30 
“ Ditto, strictly C. P., Sp. Gray., 1047 U. S. P., same 
quality as Baufoy’s best Eng Per lb., .50 
“ Ditto, Acetic, Glacial Per lb., $1.25, Per oz., .15 
“ "Antimonic, C. P “ .15 
“ Arsenic Per lb., $1.50 “ .15 
“ Arsenious, C. P “ 1.00 “ .10 
“ Ditto, Lump Coml., very com.... “ ,20 
Boracic, C. P. fused, pow’d « .15 
“ Benzoic, True .... “ .25 
“ Ditto, Com. Artificial “ .15 
“ Butyric, Puriss “ .40 
“ Camphoric, True per oz., 2.50 
“ Chloric “ 
“ Carbazotic, Puriss “ 1.00 
“ Capronic “ 3.50 
“ Carbolic, White Cryst Per lb., $1.50 Per oz., .15 
“ Ditto, Com’l “ 1.00 “ .10 
“ Chromic, C. P., Cryst “ .30 
“ Cresylic, C. P., Cryst “ 40 
“ Citric, C. P., Cryst.. .Puriss Per lb., $2.50 Per oz., .20 
“ Formic, C.P.... “ .25 
“ Fluoric. See Hydrofluoric, in 1 oz. and 8 oz. bot- 
tles. 
“ Gallic, Puriss : " .40 
“ Gallotannic “ .65 
“ Hippuric “ 3.00 
" Hydriodic “ 1.25 
“ Hydrobromic “ .60 184 
E. b. benjamin’s descriptive catalogue 
Acid, Hydrocyanic, U. S. P Per oz., $ .10 
“ Hydrofluoric, in gutta percha bottles, with bottle. Per lb., 2.25 
“ Hydrofluosilicic, C. P “ 1.00 
“ Hydrochloric. See Muriatic. 
“ Hypophosphorous, Sol Per oz., .40 
“ Iodic, C. P u 2.00 
££ Lactic, C. P., Cone “ .50 
4< Malic “ 1.50 
“ Margaric, C. P Per dr., .40 
“ Meconic Per oz., 8.00 
“ Mucic ££ 1.00 
“ Molybdic, C. P., T Per oz., .50 
££ Muriatic, C. P., in 1 and 6 lb. bottles Per lb., .27 
££ Ditto, Com’l ££ .06 
££ Ditto, special price for Carboy. 
££ Nitric, C. P., 1 and 7 lb. bottles ££ e .35 
££ Ditto, Com’l, Per carboy, special prices “ -15 
££ Ditto, Fuming Red. C. P. (rare quality) ££ 2.25 
££ Ditto, ditto, ditto “ 1.50 
“ Nitrohydrochloric, Pure ££ .50 
“ Oxalic, C. P. T., according to quality ££ 1.25 
££ Ditto, C. P., Am., very superior ££ .50 
££ Ditto, Coml ■ “ .25 
££ Oleic, C. P Per oz., 1.50 
££ Phosphoric, U. S. P .05 
“ Ditto, Glacial, C. P- T “ .20 
“ Phosphorous, C. P., Sol “ .10 
££ Phenic, Crystals, Pure “ .15 
“ Phosphomobybdic, Sol. ££ 1.00 
<£ Phosphowolframic, Sol ££ .80 
££ Pyrogallic, Leviss, C. P. T “ ’80 
££ Ditto, Alb. Sula. Puriss ££ .50 
“ Pyroligneous, Refined Per lb., 1.00 
“ Prussic, “ Scheeles ” Per oz., .25 
‘£ Salicylic ££ .50 
“ Pictric, True Per oz., .40 
4£ Silicic, Pure Native, Pow’d Per lb., .25 
“ Ditto, C. P., Precc., T Per oz., .25 
■“ Succinic, Pure Alb. Cryst “ .40 OF CHEMICAL AND PHYSICAL APPARATUS. 
185 
Acid, Stearic, Puriss., for delicate analysis Per dr., $ .60 
“ Ditto, Com Per oz., .10 
“ Suberic Per dr., 1.75 
“ Sulphuric, .C. P., 1 and 9 lb. bottles Per lb., .40 
“ Ditto, Com’l “ .06 
“ Ditto, Nord, in cans and bottles “ .35 
“ Ditto, per Carboy, special price. 
“ Tannic, C. P., Leviss Per oz., .30 
“ Ditto, Pure “ .15 
“ Tartaric, Pure, Cryst Per lb., .75 
“ Ditto, C. P., for accurate analysis “ 1-75 
“ Ditto, Powdered, Com “ .60 
“ Titannic Per dr., .40 
“ Uric, C. P., Cryst Per oz., 1-25 
“ Uranic, Com Per oz., 1.25 
“•Valerianic Per oz., .60 
“ Vanadinic, C. P Per dr. 8.00 
“ Wolframic. See Tungstic Acid. Per oz., .40 
Alcohol, 95pr.c.; special price large quantity Per gal. 3.00 
“ Absolute Per lb. -SO 
“ Ammoniated “ 1.00 
“ Amylic “ 2.50 
“ Methylic, nearly inodorous and free from 
Amylic Alcohol. This will be found to be 
an excellent and cheap substitute for Wine 
Alcohol in all heating operations. It pos- 
sesses decidedly greater heating power than 
Wine Alcohol, and is recommended to the 
attention of all chemists and experi- 
menters living where gas cannot be pro- 
cured or used. Per gal., $1.65,-by the keg 
or cask Per gal. 1.40 
Albumen, from blood per Oz. .25 
“ “ milk “ .50 
“ “ eggs “ .20 
Aldehyde Per oz., .40 
Aluminium,Mett, foil « 2.00 
“ “ wire “ 2.00 
“ Chloride, C. P “ .35 186 
E. B. benjamin’s descriptive catalogue 
Aluminium,Fluoride. Native; see Minerals Per lb., t .50 
Alumina, Precc., Puriss., hydrated Per lb., 2.00 
££ Acetate Per oz. .30 
“ Bromide Per oz., .50 
“ Sulphate, Pure Cryst. Leviss Per oz., .20 
“ £t and Ammonia, Puriss Per lb., 1.00 
“ “ <£ “ Crude, Com.... “ .10 
“ Ammonia, Cryst. and Pulv “ .25 
Alum, Potassa C. P. T “ .25 
“ Iron Per oz., .10 
££ Chrome, Cryst., Pure , “ .10 
“ Ammonia, Ferric Per lb., 1.00 
Amber, small pieces Per oz., .20 
Ammonia, Aqua, Cone., U. S. P., 4| lb. bottles Per lb., .35 
“ Liquor. F. F. F., 26| per cent, of gas Per lb., .35 
Per oz., .05 
“ Spirits, U. S. P Per lb., .20 
“ Acetate, Cryst., C. P Per oz., .50 
£< Ditto, Sol., C. P ♦ • • • “ .25 
“ Arseniate “ .30 
“ Benzoate, C. P “ .90 
“ Bichromate “ .40 
“ Bromide “ 
“ Carbonate, pure Per lb., .75 
“ Ditto, Com “ .60 
“ Citrate and Citrate Iron Per oz., .25 
“ . Citrate Per lb., 2.50 
“ Gallate, pure Per oz., 1.50 
“ Hydrosulphide, Liq Per lb., .75 
“ Hydrofluorate, Cryst., C. P Per oz., 1.50 
“ Hypophosphite “ .30 
'£ Molybdate, C. P., Cryst “ .75 
“ Monocarbonate, C. P Per lb., 1.50 
« Chloride, C.P « .50 
“ Ditto, Com’l “ 
“ Nitrate, Cryst., C. P Per lb., $1.00, Per oz., .10 
« “ fused Am., Pure Per lb., .40 
“ Oxalate, C. P., Cryst Per lb., $1.80, Per oz., .20 
« Phosphate, Cryst., Pure “ .20 OF CHEMICAL AND PHYSICAL APPARATUS. 
187 
Ammonia, Succinate, T., Cryst Peroz., $ .80 
“ Sulphate, Com Per lb., .12 
“ “ C. P “ .70 
“ Sulphocyanide Per lb., $3.00, Per oz., .25 
“ Urate, C. P........................... “ .80 
“ Valerianate “ .80 
“ Vanandate Per gr., .20 
Amygdalin.. Per dr. 2.75 
Amyle, Acetate Per oz., .50 
“ Butyrate “ .50 
“ Formate “ .50 
“ Nitrite, Pure.. “ .60 
“ Valerianate “ .75 
Hydrochlorate “ .75 
Amalgam, Mercury Per box, .75 
“ Fusible “ .50 
Antimony, Chloride, Sol Per lb., .40 
“ “ Cryst., C. P Per oz., .40 
“ Iodide, Cryst., C. P “ .90 
“ Proto Oxide, white, C. P “ .15 
“ Golden Sulphide Per lb., .75 
“ Black “ Levigated. Per lb., .35, Per oz., .05 
" Ditto, Native Per lb., . .20 
“ Tartrate, Cryst., Pure “ 2.00 
“ Ditto, and Tart Potassa “ 1.25 
“ Mett, Best - “ .20 
Aniline, Pure, Liq •“ 2.50 
“ Sulphate, C. P Peroz., .75 
“ Red “ ’90 
“ Scarlet “ 
“ Blue*. “ 
“ Violet " 
“ Pink “ 
“ Green “ 
“ Black “ 
“ Yellow “ 
“ Orange “ 
“ Purple “ 
Animal Charcoal, Gran., Best Per lb., .10 188 
E. b. benjamin’s descriptive catalogue 
Animal Charcoal, Com Per lb., $ .08 
“ Pulv. Fine « .10 
Arsenic, Native Mett « .50 
" Pulverized « .25 
Bromide Per oz., J.25 
“ Iodide “ .75 
“ Chloride .80 
Oxide Proto. See Acids. 
> • 
« Per “ “ 
“ Sulphide Per Per lb., .20 
“ “ Proto « .25 
Argols, Crude “ .25 
“ Refined « .30 
Asparagin, C. P Per dr., .30 
Asphaltum, Opt Per lb. .15 
Asbestos, Long Fibre Per oz., .15 
“ Short “ Per lb., .60 
Atropia, Pure Per gr., ,06 
“ Sulphate “ .06 
B. 
Barium, Chloride, Com Per lb., .20, Per oz., .05 
“ “ C. P “ .30. “ .05 
“ “ Puriss., T Per lb. .40 
“ Fluoride Per oz., 1.00 
“ Mett., Spec Per Gram. 4.50 
“ Iodide, C. P , Per oz., 1.00 
“ Hyperoxide, C. P., T “ .45 
“ Proto-oxide, “ “ .30 
“ Sulphide “ .10 
Baryta, Acetate « .20 
“ Caustic, Cryst., C. P Per lb., $1.00, “ .10 
“ Carb., Native Per lb. .25 
“ c‘ Precc., C. P., T " .80 
“ Chlorate, C. P., T - Per oz., .40 
“ Nitrate, Cryst., C- P Per lb., .50 
“ - “ Com’l ..1 “ .30 
“ Sulphate “ .75 
“ “ Opt., Pure Per oz., .10 Baryta, Water, per fluid oz Per oz., $ .05 
Beeswax, White “ .10 
“ Yellow Per lb., .75 
Berberine, Pure Per oz. 3.50 
“ Sulphate 44 4.25 
Benzoin, Gum Per oz., .10 
Benzole, Genuine Per pt., .60 
Benzine “ .15 
Bismuth, Mett Per oz., .75 
“ Ammoniocitrate “ .10 
“ Mett, Puriss 44 .75 
44 Acetate, Pure . 44 .25 
44 Carb “ .75 
“ Chloride “ .30 
“ Oxide, Hydrated “ .75 
“ Nitrate, Cry st “ .40 
“ Sub. ditto, Powdered 44 .50 
“ Tannate “ .80 
44 Valerianate, C. P “ 1.50 
Black Flux Per lb., 2.00 
Bone-Ash, Am. (by the bbl., or 50 lbs., or more, spe- 
cial price) 44 .25 
“ French “ -40 
“ Washed 44 .60 
Bleaching Powder “ .15 
Borax, Refined “ .16 
44 Glass Per lb., $3.00, Per oz., .25 
44 Pulverized “ .10 
Brazil Wood, True Per lb., .25 
Bromoform, C. P Per oz., 2.50 
Bromine, Pure “ .25 
44 Chloride “ .75 
Brucia, C. P Per oz . 4.00 
“ Nitrate 44 4.50 
C. 
Cadmium, Mett, in stick; Pure, T Per oz., .25 
44 “ Ribbon 44 .75 
44 Bromide ■ “ .05 
OF CHEMICAL AND PHYSICAL APPARATUS, 
189 190 
E. b. benjamin’s descriptive catalogue 
Cadmium, Carbonate Peroz., $ .75 
“ Chloride “ .60 
Iodide “ .75 
Sulphide “ 1.00 
“ Oxide ’ “ .75 
“ Sulphate “ .40 
Caffeine, Pure; very superior “ 4.50 
“ Citrate Per oz., 5.00 
Casein, “ Pure Peroz., .10 
Calcium, Mett, per Spec Per gram. 10.00 
“ Acetate, C. P Per oz. .15 
“ Carb., Precc.; Pure Per lb., 1.50 
“ Chloride, Fused; C. P., T “ 1.00 
“ “ Gran’l “ “ .50 
“ “ Cryst. “ “ .25 
“ Bromide, Pure Per oz., .30 
“ Iodide ‘ “ .50 
“ Nitrate, C. P., Cryst “ .20 
“ Fluoride, Pow’d Per lb., .10' 
“ “ Cryst., native selected “ .30 
“ Phosphide, Pure, T Per oz. .65 
“ Phosphate Per lb. $2.00, “ .25 
“ Sulphide .08 
Camphor, Best Borneo .07 
Carbon, Bisulphide Per lb., .50 
“ Trichloride, Liquid Per oz., 1.25 
Carbo, Animalis Per lb., .10 
Carmine, Opt Per oz. 1.00 
Cerium, Mett, per specimen Per gram. 7.50 
“ Chloride Per oz., 2.00 
“ Nitrate “ 1.50 
“ Oxalate, Pure “ 1.00 
Caesium, Chloride Per Gram. 6.00 
“ and Rubidium, Chloride Per gr. .25 
Cethyle Per lb., 1.00 
Chameleon, Mineral, Pure Per oz., .12 
Chloral, Hydrate “ .25 
Chlorine, Aqueous Sol. of Per lb., .15 
Charcoal, Willow, Pow’d, Pure “ .35 OF CHEMICAL AND PHYSICAL APPARATUS. 
191 
Charcoal, Willow, Prepared in blocks Each, $ .10 
Chloroform, Opt Per lb., $1.25, Per oz., .20 
Chromium, Mett, Per gram. 1.20 
Chrome, Alum. See Alums. 
Chromium, Chloride,-C. P Per oz., 2.50 
“ Sesqui Chloride “ .40 
“ “ Oxide “ .30 
“ Green “ “ .30 
“ Carb « 1.00 
Cinnabar. See Minerals. 
Copper, Acetate, C. P., Cryst. T “ -15 
“ “ Com., Pulv’d « .05 
“ Arseniate. C. P. T 
“ Arsenite “ .25 
c‘ Ammoniated, C. P., T “ -20 
“ Carbonate, C. P., Precc “ .15 
« Chloride, C. P., T « .50 
“ “ Di. “ “ .25 
“ Chromate e' .20 
“ Cyanide, C. P “ .50 
“ Formate Per dr., . 40 
“ Iodide, C. P Per oz., *75 
“ Nitrate, Cryst., C. P, T Per lb., $1.00, “ -10 
“ Oxalate 4... “ .25 
“ Oxide, C. P., Gran. Pow’d, T. .Per lb., $2.50, “ -25 
“ “ Pure, Pow’d, “ 2.00, “ *15 
“ Reduced Puriss, Pow’d “ -35 
■“ Mett, Pure Gran Per lb., $1,85, “ .15 
“ “ Thin Foil, Pure “ .75 “ *10 
“ Sheet....- « .65 “ -08 
“ Scraps “ .50 “ *00 
“ Turnings “ .40 “ -05 
“ Sulphate, C. P., T “ .45 “ .10 
“ “ Com’l « .15 “ -05 
“ Ammoniated. C. P. T “ .15 
“ Sulphide “ .12 
Cobalt, Acetate, C. P « .75 
“ Mett, Cubes “ 1.25 
« “ C. P., T « 2.50 192 
E. B. benjamin’s descriptive catalogue 
Cobalt, Chloride, C. P., T Peroz., $ .60 
“ Carb., C. P., T « .75 
“• Nitrate, C. P., T “ .65 
“ “ C. P., Sol. F. T “ .40 
“ Oxalate, C. P., T “ 1.00 
“ Oxide, C. P “ 1.00 
« « Com’i ; « 
Codeia, Pure Per dr., 1.00 
Collodion, E. Sol Per oz., _ig 
“ Cotton. Best Parry’s “ .75 
Conine, Pure German Per dr., .75 
Cream Lartar, Pow’d Per lb., .50 
Creasote, White Per oz., . 15 
Crocus-Martis, Per lb., .12 “ .05 
Cryolite, Best. See also Minerals.. .Per lb., .25 to .50 
D. 
Dextrine, Opt., Pow’d Per lb., .20 
Distilled Water Per gal., . 20 
Dutch Leaf Per book .10 
Didymium, Chloride Per gram. 7.00 
E. 
Ether, Sulphuric, Lot, .60.... Per lb., . 90 
“ “ Veritable, Cone “ 1.35 
“ Acetic, Pure Cone Per oz., .10 
“ Butyric “ .30 
“ Chloric “ .20 
“ Formic “ .40 
“ Nitric, Spirits of Per lb., 1.25 
“ Oneanthic, Pure Per oz., 8.00 
Emery, Flour Per lb., .25 
“ Pow’d....; “ .20 
F. 
Fehling’s Sol., for physicians’ and sugar-house use, 
indicating percentage of grape sugar Per oz., .12 
Felspar, Pow’d, White Per lb., .15 
“ Native, Cryst “ .10 OF CHEMICAL AND PHYSICAL APPARATUS. 
193 
FireClay, Fine . Per lb., $ .10 
Fluor Spar, Cryst “ .15 
“ “ Pow’d “ .10 
Formyle, Chloride Per oz., .20 
“ Bromide “ 2.50 
“ Iodide , Per dr., .50 
Fusible Metal Per oz., .40 
Fusel Oil, Pure.. Per lb., 1.00 
Fruit Essences, Artificial; all varieties kept. 
G. 
Galena, Fine, for Blow-pipe work “ .30 
Galls, Ground Per oz., .05 
“ Tincture of “ .15 
Glass of Borax “ .25 
Glucina, Carbonate Per dr., 1.50 
“ Hydrate “ 1.50 
Glucose, in lumps Per lb., .15 
Glycerine, Puriss.; water free, T « .70 
“ Best American; very fine; free from lead 
and all earthy matters “ .50 
Gum, Arabic, picks “ .75 
“ “ sorts « .50 
Benzoin Per oz., -10 
« * Tragacanth « .10 
Gums, of all kinds, at lowest market rates. 
Gold, Chloride, Sol « 2.00 
“ Ditto, Dry, Pure, 15 gr. bottles “ 25.00 
“ Oxide <« 35.00 
“ Metallic Leaf, xx Deep, Per book, .75 
Graphite, Pow’d. Pure T Per lb., 1.00 
“ In Lump « .25 
GuttaPercha. Pure. In Sticks Per oz., 1.00 
Gypsum, Pulv Per lb., . 10 
Gelatine, Pure Per oz., .15 
BL 
Haematoxyline Per. gr., . 08 194 
K. B. benjamin’s descbiptive catalogue 
I. 
Indigo, Pure, Best Bengal Per oz., $ ,15 
“ Sulphate Sol .. “ .10 
Iodine, Pure, Resublimed, T “ .50 
“ Crude “ .40 
Iridium, Mett Per gram. 2.50 
“ Chloride “ 1.80 
Iridosmium “ .50 
Indium, Mett “ 6.50 
Iron, by Hydrogen, Pure Per oz., . 15 
“ Pulv., Sub., Pure “ .10 
“ Wire, Pure , “ .20 
“ Acetate “ .40 
“ Ammoniated “ .10 
“ Limatura, Alcoholized li .05 
“ Arseniate “ -40 
“ Bromide.. “ -35 
“ Carbonate, Precc. T Per lb., .60, “ . 10 
“ “ Proto, Precc “ .15 
“ Chloride, Sesqui, Sol Per lb.. -R0, “ .06 
ec “ “ Fine Cry st., C. P.. “ $.100, “ .10 
“ “ Proto “ .75, “ .10 
“ Native *. Per lb., .25 
“ Citrate, U. S. P Per oz., .15 
“ “ and Ammonia “ .15 
“ “ and Manganese “ .20 
■“ and Magnesia “ .20 
“ Ferrocyanide, Pure “ .12 
“ “ Com “ .10 
“ Filings Per lb., .10 
“ Iodide, C. P Per oz., .50 
« “ Com “ .40 
“ Lactate, Pure “ . .20 
“ Oxide, Hydrated Peroxide Per lb., 1.50 
“ “ Proto .Per oz., .10 
" “ Red Oxide, Precc Per lb., 1-20 
“ “ Black Oxide, C. P Per oz., -15 
* “ “ Com’l Per lb., .75, “ .10 OF CHEMICAL AND PHYSICAL APPARATUS. 
195 
Iron, Nitrate, Per. Sol Per lb., $ .50, Peroz., $ .10 
“ Phosphate, Proto “ .60, “ .10 
“ ' “ Per « 1.00 « .15 
“ Pyrophosphate, in Plates “ .15 
“ Sulphate, C. P., Cryst.. Per lb., .09 
11 “ Dried “ .18 
“ “ and Ammonia, C. P “ .20 
“ “ and Potassa Per lb., .80, Per oz., . 10 
“ “ Sub., Pure “ .15 
“ Sulphide, Fused, Opt Per lb., .20 
“ “ Gran “ .30 
“ Tannate, Pure Per oz., .40 
“ Tartrate “ .20 
“ “ and Ammonia “ .15 
“ Tersulphate, Sol., Opt Per lb., .60 
“ “ and Potassa Per oz., .15 
“ Tungstate Per lb., . 40 
“ Valerianate Peroz., .60 
J. 
Jalapine, Peroz., 2.00 
K. 
Kermes, Mineral ’. Per lb., 2.50 
Kaolin, Pure, White “ .15 
Kreatine Per gram. 5.00 
L. 
Lead, Acetate, C. P., T Per lb., .75 
“ Com’l “ .50 
“ “ Tribasic Peroz., .40 
“ “ Sub., Sol Per lb., .40 
“ Bichromate, Pure Peroz., .25 
“ Carb., Neutral Per lb., .35 
“ “ Native. See Minerals. 
“ Chloride, C. P Peroz., .10 
“ Chromate, for Organic Analysis “ .15 
“ Hyposulphite “ .10 
Iodide.; “ .40 196 
E. B. benjamin’s descriptive catalogue 
Lead, Mett, C. P., in drops, for Assay purposes Per lb., $ .75 
“ Nitrate, Pure •< .70 
“ Oxide, Red “ 1.00 
“ “ Proto, Pure “ .25 
“ Per oz.. .10 
“ Phosphate, Pure “ .30 
“ Sulphate, 0. P ■ Per lb., .50 
“ Tartrate, Pure Per oz., . 20 
“ Tannate ........ : “ .25 
Lithia, Carbonate, C. P “ 1.50 
“ Citrate “ 1.25 
“ Sulphate “ 1.50 
Lime, Chloride, Com’l '. Per lb., .20 
Lithium , “ C. P Per oz., 1.50 
“ Bromide Per oz., 1.20 
“ Iodide “ 1.25 
Litmus. In Cubes, Pure..: “ .10 
“ Paper, Blue and Red Per sheet, . 05 
Logwood. In Chips Per lb., .10 
“ Extract Per oz., . 10 
“ In Billets Per billet, .50 
Lupiline Per oz., .10 
Lycopodium .’ “ .10 
M. 
Magnesia, Caustic. 0. P. T Per lb., 2.00 
“ Carbonate, Precc Per oz., .15 
“ Native. See Minerals. 
“ Citrate, Pure : Per lb., .20 
“ Nitrate Per oz., .20 
“ Hypophosphite “ .75 
“ Phosphate “ .40 
“ Sulphate, C. P Per lb., .30 
“ . Valerianate Per dr., .30 
“ Sulphate, Com’l Per lb., .10 
“ Sulphite Per oz., .10 
Magnesium, Ribbon Per foot, .05, “ 3.75 
“ Wire “ .05, “ 
“ Bromide “ 1.00 OF CHEMICAL AND PHYSICAL APPARATUS. 
197 
Magnesium, Iodide Peroz.,$ 1.00 
“ Chloride, C. P . Per lb., .30 
Manganese, Mett Per gram. 1.00 
“ Acetate Per oz., .30 
“ Bromide “ 1.25 
“ Carbonate. T “ -35 
Citrate “ .25 
“ PerOxide; high test; Pulv Per lb., .10 
“ Chloride, Pure Per oz. • 20 
“ Hypophosphite Per oz., .65 
“ Iodide “ 1.10 
“ Phosphate “ .50 
Nitrate “ .35 
“ Sulphate, C. P., Cry st Per lb., $2.00 “ .20 
Mannite Per dr., .30 
Meconin Per dr., 2.50 
Morphia, Pure Alkaloid Price, per oz., 9.00 
“ Bimeconate “ “ 12.00 
Chloride “ “ 10.25 
Nitrate ! “ “ 12.00 
“ ' Sulphate “ “ 7.00 
“ Valerianate' s “ “ 8.50 
Mosaic, Gold Per oz., .35 
Mercury, Redistilled, Best, Per lb., 1.25 
“ “ in quantities, special price. 
“ Acetate Per oz., .50 
Bromide “ .50 
“ Chloride, Proto “ .30 
“ “ Per Am “ .15 
“ Cyandide, T “ .50 
“ Chloride, C. P. T., Per “ .35 
Iodide, Proto “ .55 
“ “ “ Deuto “ .50 
“ Oxide, Black “ .50 
“ “ Proto, Red “ .25 
“ “ Yellow “ .35 
“ Sulphide, Black “ .20 
“ “ Red “ .25 
“ Sulphocyaiiide “ .35 198 
Mercury, Sulphate, Basic Peroz., $ .20 
“ • “ Neutral “ .35 
“ Nitrate, Proto, T ... .. “ .30 
“ Per, T.. “ ' .45 
Melliyliue Per lb., 1.00 
Minium, Opt “ .15 
Microcosmic Salt, Pure Per lb., $1.50,, Per oz., .15 
Molybdenum, Mett Per gram. .50 
“ Oxide, C. P Peroz., .55 
“ Sulphide “ -60 
Menisperin, Pure 00 
N. 
Naptha, Refined Per lb., .55 
“ Wood “ .75 
Naphaline, Pure, T Per lb., $1.50, Per oz., .20 
Narceia Per dr., 7.50 
Narcotine, C. P Per oz., 2.50 
Nessler’s Solution, for delicate Ammonia reactions, 
Per fluid oz., ■ .25 
Nickel, Mett, Cubes Peroz., .10 
“ Carb, Pure “ ■"& 
“ Chloride, T..... “ .75 
“ Nitrate, C. P. T “ .80 
“ Oxalate, “ “ 1-00 
“ Oxide “ 1.00 
“ Sulphate, C. P “ .50 
“ “ and Ammonia “ -75 
Nicotine * “ 16.00 
Nitrobenzol ’ Per oz., .15 
O. 
Ores and Minerals. See Minerals and Fossils. 
Osmium, Mett Per gram. 3.50 
Olive Oil, True Perpt., .60 
Oils, Essential; all varieties kept; True 
•• Rapeseed Perpt., .50 
E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE OF CHEMICAL AND PHYSICAL APPARATUS. 
199 
P. 
Palladium, Mett .... .Per gram. 3.00 
;£ Chloride, 1 dr. bottles dr., 7.00 
Parafine, Opt., Pearl Per lb., . 40 
Phosphorus. In Sticks Per lb., $1.50, Per oz., .15 
, “ Amorphous ££ .30 
“ Chloride Per dr., .75 
Pancreatine Per oz. .75 
Picrotoxine, Pure Per oz.,12.00 
Pyroxilic Spirit, Pure ;.Perqt., .50 
Piperine Per oz., 1.30 
Pepsine, Best, Refined Per oz., 1.25 
Phloridizlne “ 3.50 
Platinum, Chloride, Sol Per oz., .75 
“ “ Dry, T , “ 7.50 
“ “ and Sodium • << 7.00 
“ Sponge Per gr., -03 
“ “ for Hydroplatinic Lamp Each, -25 
“ Wire Per gr., .2| 
“ Sheet ■ “ -2| 
“ Plate “ .03 
Potassa, Acetate, Pure • Per oz., .10 
“ Antimoniate ££ .30 
“ Arseniate “ .10 
“ Arsenite “ .10 
“ Bicarbonate, C. P. T. Per lb., .50 
££ “ Com’l “ .10 
“ Bichromate v “ .25 
“ “ Puriss....*. Per lb. $1.00, Per oz., .10 
11 Binoxalate “ -20 
££ Boro-Tartrate. T ££ .15 
££ Bisulphate, C. P. T Per lb., -60 
££ Bitartrate, Cryst “ .50 
££ ££ Puriss., T ££ 1.00 
££ £f Pow’d ££ .40 
“ Bromide Per oz., .15 
££ Carbonate, C. P., Sicc Per lb., 2.00 
“ “ Com Per lb., .20 200 
E. B. benjamin’s descriptive catalogue 
Potassa, Carbonate and Carb. Soda, C. P Per lb., $ 2.00 
“ Caustic, Fused, White, C. P. T “ .60 
“ “ “ Brown “ .50 
“ “ “ C. P., Am “ .75 
“ “ “ Dep. Alcohol, Puriss “ 2.00 
“ Chlorate, Cryst., Best “ .40 
“ “ Puriss “ 1.00 
“ Chromate, Puriss Per lb., $1.50. Per oz., . 15 
“ “ Com Per lb., .60 
“ Citrate Per oz., .15 
“ Cyanide, Fused, Alb., Opt “ .15 
“ “ “ “ In 10 lb. cans Per lb., .80 
“ “ “ “ C. P. T., Per lb., Per oz., .75 
“ Chloride, C. P., T ' “ “ .10 
“ Ferrocyanide, Pure.. T “ “ >15 
“ Ferridcyanide “ . T.‘ “ “ .25 
“ Fluoride, C. P., T “ .75 
■“ Hypochlorate “ .40 
Hypophosphite “ .25 
“ Iodide, Pure Cryst(variable price) “ • 30 
“ “ Fused Puriss, T “ .75 
“ Iodate “ 
“ Ilypermanganate “ .20 
“ Manganate “ “ -15 
“ Lactate “ 1-00 
“ Liquor '... Per lb., .40 “ -10 
“ Nitrate Cryst Per lb., 
“ “ C. P., Gran..- “ -50 
“ Phosphate, Pure “ 
“ Nitrite, Pure, T.... in sticks Per oz., -30 
u Oxalate “ -20 
£ “ Bin . ££ -10 
‘ Pictrate, very scarce 2.50 
“ Silicate, Sol., C. P., T “ .05 
• “ “ Dry “ “ ......................Per. lb. -60 
Sulphate, Cryst., Pure Per lb., .50 
« “ Puiv : “ -16 
“ Sulphite, Cryst Per oz., .45 
4£ Sulphide, Fused C. P “ .20 OF CHEMICAL AND PHYSICAL APPARATUS. 
201 
Potassa, Tartrate, Cryst. C. P. T Per oz., $ .15 
Potassium. In vials Per oz., $3.50, Per |oz., 1.00 
“ Sulphocyanide... 0. P. T Per oz., .40 
Propylamin, Pure Per oz., 1.50 
“ Chloride Per oz., 6.25 
Proteine : Per oz., 
Prussian Blue “ «10 
Q- 
Quinia, Pure Per oz.,4.25 
“ Acetate Per oz., 4.25 
“ Arseniate “ 6.00 
“ Chloride Per oz., 3.50 
“ Sulphate Per oz., “ 2.35 
R. 
Rare Resinoids—Podophyllin, Leptandrin, Cimicifu- 
gin, Macrotin, Alnuine, Ampelopsine, Apocynin, 
Asclepidin, Baptisin, Barosmin, Caulophyll, Ce- 
rasine, Chelonine, Colocynthine, Cornine, Coryda- 
lia, Cypripedine, Digitalin, Dioscorein, Eryngine, 
Euonymine, Eupatoidin, Eupatorine, Eupurpurin, 
Fragerin, Gelseminine, Geranine, Hamamelin, He- 
lonin, Humulin, Hydrastine, Hydrastin, Hydrastia 
Mur., Hydrastia Snip., Hyoscyamine, Irisin, Ja- 
lapin, Juglandin, Lobelin, Menispermin, Myricin, 
Panduratin, Phytolacin, Populin, Prunine, Rhusin, 
Rumicin, Sanguinarina, Sanguinarina Sulph., Scu- 
telarine, Senecionine, Stillingine, Trillin, Veratrin, 
Verbenine, Viburnin, Xanthoxylin. 
Rheine, ,Tdden’s Per oz., 4.25 
Rhodium, Mett Per gram. 5.00 
Rubidium, Chloride “ .50 
Rhigoline, Inoderous; Sp. Gray. 620 Per both, .75 
Ruthenium, Mett Per gram. 6.50 
S. 
Salicine “ Per oz., .50 
Sanguine, Best Fr .Per lb., 1.25 202 
E. B. benjamin’s descriptive catalogue. 
Selenium Per dr., $ .75 
Siliciuni Per gram. 4.00 
Santonin, Pure,. Alkaloid • - Per oz., .75 
Silica, Fine ground Per lb., .15 
Silver, Mett Foil Per oz-> 1.75 
“ Gran., Pure ” 2.50 
Leaf, “ Per book, -25 
“ Acetate, Pure Per oz., 3.50 
Bromide “ 2.50 
Chloride ” 1*60 
“ Cyanide. Sol • " 2.50 
“ Carbonate Per oz/3.60 
“ Iodide, Pure Per oz., 2.50 
“ Nitrate, C. P., Cryst 1-00 
“ Oxide ” 1.75 
“ Sulphate, Pure " 3.00 
Soda, Acetate ' * Per lb., 1.00 
“ Arseniate Per oz., .15 
“ Arsenite ” 
“ Bicarbonate, Eng., Best Per lb., .07 
<( a C. P. . T “ -60 
“ Bromide Per oz., .15 
“ Bromide, C. P Per lb., 1-50 
“ Biborate, Puriss “ P00 
“ Bisulphate, Pure “ 
“ Bisulphite, C. P “ L20 
“ Carbonate, Cryst., C. P., T t.. • “ 
“ “ Dried, Puriss., T “ 
“ “ Cryst., Com “ -05 
“ Caustic, White, by Lime, Fused “ 
“ “ Alcohol, Dep., C. P., T . “ 2-0b 
“ by Sodium Per oz., 1-25 
“ Chlorate, Cryst 
“ Chloride, Sol., U. S. P Per bottle -20 
“ “ Dried, C.P..T Per lb.. -35 
“ Citrate, Pure Per oz., -2t) 
“ Fluoride .’ Per oz., -75 
“ Iodide, Pure, Cryst ” 
“ Hyposulphite, C. P., T Peril)., -70 
“ Lime, Gran., C. P. T • “ 1-00 
“ “ Pow’d, C. P. T “ 1-25 OE CHEMICAL AND PHYSICAL APPARATUS. 
203 
Soda, Hyposulphite, Am., Opt Per lb., $ .09 
44 Hypermanganatg, C. P Per oz., .10 
44 Hydrosulphite. Cryst T Per lb., .75 
44 Hypophosphite Per oz., .75 
44 Iodate ; “ 2.0C 
44 Lactate, Sol., Cone .' “ .60 
44 Phosphate, Cryst., C. P. T Per lb., .65 
44 Pyrophosphate 44 1.30 
44 Nitrate, Cryst, 0. P “ .35 
44 “ “ Refined 44 .20 
44 Pyrophosphate Per oz., .10 
44 Sulphite Per lb., .75 
44 Santonate Pefoz., 1.50 
44 Sulphocarbolate •• .30 
44 Silicate, Sol., 3 lb. bottles Each, .90 
44 Sulphate, Com’I Per lb., .0-1 
44 44 Pure 44 -30 
44 Tungstate Per oz., .15 
Sodium, Mett w 44 .50 
44 Bromide.... C. P. T 44 .10 
44 Nitroprusside 44 2.00 
44 Sulphide, Fused Per lb., .80 
44 44 Cryst .75 
“ “ 0. P. Per oz., -10 
Solanine Per dram. 5.00 
Spermaceti, Pure Per lb., -35 
Spirits, Ammonia, U. S. P 44 .35 
Strontium, Mett P.-r gr. .60 
Strontia, Carbonate, Precc Per oz., d0 
44 ''Caustic 44 .30 
44 Chloride, C. P., T Per lb., $1.50 “ d0 
44 Nitrate, Dried Per lb., -75 
4- 44 Cryst .C. PT 44 1.25 
44 Sulphate. See Minerals. 
44 44 C. P.T Per lb., .75 
Strontianite. 
Strychnia, Cryst., Pure Per oz.,3.00 
44 Acetate 44 3.50 
44 Chloride Per dr., .75 204 
E. b. benjamin’s descriptive catalogue 
Sulphur, Flos Per lb., $ .08 
“ Roll “ .06 
“ Chloride Per oz., .25 
“ Iodide “ .45 
“ Precc., Pure , Per lb., .25 
T. 
Tellurium, Mett Per gram. 1.50 
Thebaine, Pure Per gr., .50 
Theiue, Pure, Alkaloid Per dr., 5.0b 
Thallium Per gram. .50 
“ Chloride . « .50 
Thymol Per oz., 1.50 
Test Paper, Litmus, Blue Per sheet, .05, Per quire, .80 
“ “ Red “ .05, “ .80 
“ “ Neutral “ .0’5, “ .80 
“ Brazil Wood “ .05, “ .80 
“ Georgina “ .06, “ 1.00 
“ Guaicum “ .06, “ 1.25 
“ Turmeric “ .05, “ .80 
“ Sulphate, Manganese... “ .05, “ .80 
“ Schonbein’s Ozone Perpack, .10 
“ Hydrosulphuric Acid. .Per sheet, .05, Per quire, .75 
Tin, Mett., in bars Per lb., .60 
“ “ Pure, in sticks “ 2.50 
“ Foil, Tissue “ 1.25 
“ Mett., Granulated “ 1.25 
“ Chloride, Pure, proto “ .75 
“ “ “ Liquid, non Aqueous Per oz., .50 
“ “ Crystals, Opt., T Per lb., 1.00 
“ “ “ Com’l “ .50 
“ Oxide, Pure, T “ 2.00 
“ Bisulphide Per oz., .25 
“ Sulphide, Proto “ .20 
Tungsten, Mett Per gram. .50 
“ Oxide « .45 
Turmeric, Pow’d Per oz., .05 
Toluol. OF CHEMICAL AND PHYSICAL APPARATUS. 
205 
u. 
Uranium, Acetate, Pure, C. P Peroz. $ 1.00 
£k Chloride ££ “ poo 
“ Nitrate “ i.oO 
££ Sulphate £< ].oo 
££ Oxide Per oz., 1.00 
Urea, Cryst., Pure.. .* “ 1.25 
“ Nitrate .... • “ 1.00 
V. 
Vermillion... .tiue “ .10 
Z. 
Zinc, Mett ■. Per lb. .20 
“ “ Puriss, Gran’l, T Per lb., .50 
“ Acetate, Cryst., C. P Per lb., $1.00, Per oz., .10 
“ Gran’l, Com’l Per lb„ .25 
“ “ C. P., Arsenic, Free “ .60 
“ “ Bromide Per oz., .45 
“ Reduced, C. P., Puriss Per lb., 1.25 
“ Chloride, Dry, Opt Per oz., .10 
“ Carbonate, Pure, Precc Per lb., .35, Per oz., .05 
££ Cyanide ££ .30 
“ Ferrocyanide ££ .30 
££ Hypophosphite “ 1.00 
“ Iodide ; .60 
“ Lactate “ .50 
££ Nitrate; Pure.., “ .30 
“ Oxide, Precc ■. Per lb., 1.25 
“ Phosphate Per oz., .30 
“ Phosphide... Per oz., 1.30 
££ Sulphate, Com’l Per lb., -10 
“ ££ Puriss., T “ .30 
“ Valerianate Per oz., .60 
Zirconium, Oxide, Pure Per dr., .50 
Zircons, Native. See Minerals. ES. E.. 3EMJAMIM, 
No. 10 BARCLAY fREET, - - NEW YORK, 
MAS 'ACTURER’S AGENT FOR 
IIENU f THOEMNEH'S 
standard ba ances and wbxsix’f®, 
Established 1840, and used by all t 0. S. Mints and Assay Offices, and by the Canadian Government. 
BALANCES OF PRECISION. 
Assay Balances. 
Chemical Seales. Fig. 23. 
For General Weighing. 
Analytical Balances. 
On polished box, with drop lever, especially constructed 
for laboratory use. Including weights. 
No. Diam. of Pan. Beam Capacity. Price. 
1. 5 in. 9 in. 32 oz. $15.00 
2. 4 “ 8 “ 16 “ 12.00 
3. 3 “ 7 “ 8 “ 10.00 
Pans can be suspended by chains if desired. 
No. 1, French polished glass case, beam resting on 
agate be ngs. Sensible to 1-20 milligrammes. 
Price, $55 00 
No. 1. Analytical Balance, capacity 200 grammes in 
each pan, in fine polished glass case, beam divided in 1 10 
milligrammes, sensible to 1-20 milligrammes. All agate 
bearings, with improved arrest for pans, and apparatus 
for specific gravity, &c., &c • 
3 in. pans. Beam 14 in. 
Price, - - - - - $105.00 
Weights of Precision. 
No. 2. French polished glass case. Is arranged with 
rider apt itus and pan arrests. Open beam, divided in 
1-10 mill! imme ; beam resting on agate planes. Needle 
shows tei ivisions for one milligramme. 
Price, . - - - $80.00 
No. 2. Analytical Balance, in fine polished glass ease, 
capacity 100 grammes in each pan. Beam divided in halt 
parts of milligrammes. Sensible to 1-10 milligrammes, 
with apparatus for specific gravity. All bearings agate. 
2% in. pans. 12 in. Beam. 
Price, - - - - - - $86.00 
nalytical Scales. Fig. 22. 
In fine velvet lined polished block. Weights lacquered 
and adjusted with the greatest care and precision. 
1 Platinum Gramme to 1 Mill., - - - $ 6.00 
1 • .“ “ 1-10 Milt.. - - 7.00 
10 Gramme to 1 Mill., .... 7.50 ' 
10 •• 1-10 Mil!., .... 8.50 
50 “ 1 Mill. 3 Riders, - - - 10.50 
100 “ 12.00 
100 “ 1-10 Mili. 3 Riders. - 18 00 
200 “ 1 Mili., - 16.00 
Gold Assay Weights, .... 7.(K) 
All Riders weigh 10 Mili. unless otherwise ordered. 
GRAINS. 
10 Platinum Grains to 1-10 Grain. - . $5.00 
10 ■ •* ‘ 1-100 Grain, - - 6.00 
10 •• “ 1-1000 Grain, - 7.00 
100 Grains to 1-100 Grain, - - - 7.00 
li.OO Grains to 110 Grain, 3 Riders, - - in 00 
1000 Grains to 1-100 Grain, 3 Riders, - - 1100 
1000 Grains to 1-1000 Grain, 3 Riders. 12.00 
4 oz. Troy to 1-10 Grain, - - 8.0c 
Assay.Ton Weights.4 A. T. to 1-20 A. T., - 6.60 
No. 3. Analytical Balance, in French polished mahog- 
any case, with counterpoised sliding door. Capacity 2000 
grains, sensible to 1-100 grain. Steel bearings, movable 
in. pans, 10 in. beam. 
Price, ------ $40.00 
No. 4. Same Balance as No. 3. has attachment for 
rider, and pan arrests. Beam graduated to one milli- 
gramme. 
Price, - -. ' - - - - $60.00 
Troemner Specific Gravity Scale. 
For weig ing Ores, Minerals, Gold and Silver Coin, 
Jewelry, Chemicals, &c., &c. 
On fine Polished Mahogany Box, with drawer. Lac- 
quered B im, with box ends, adjusting screws, movable 
pans, ivo indicator. Sensible to'.-20 grain. Price does 
not inelui , weights. 
No. Lv ;th or Beam. i)iam. of Pau. Capacity, Price. 
1, 14 in. 6 in. 26 oz. $24.00 
2, 10 “ 41,4 •*. 16 “ 18.00 
3, 'J4 “ 3 “ 8 “ 15 00 
I’a s can be suspended by chains if desired. 
Gramme Weights. 
In Mahogany Block. 
500 Grammes, to 1 Grain., - - $8.00 
500 Grammes, to 1 Conti., - - - - 12.00 
500 Grammes, to 1 Mill., ... - 14.00 
1 Kilo, to 1 Gram., ..... 12.00 
1 Kilo, to 1 Centi., ..... 16.00 
1 Kilo, to 1 Mili., 18.00 
1 oz. Troy to 1-10 Grain, .... 4.00 
2 ...... .... 5,oo 
5 " - - - - 7-60 
10 «• .... 10.0- 
Constructed after the plan of Dr. Mohr. 
Price complete. - - - - • $20.00 E. B. BENJAMIN’S DESCRIPTIVE CATALOGUE 
PLATINUM. 
The increasing demand for the “non-blistering’’ Platinum, of 
which my establishment is the depot, has enabled the company 
which I represent to grant me extra facilities in this line of goods, 
and 1 would respectfully-request a camparison of the quality of 
these goods with those sold elsewhere. 
FRACTIONAL ELECTRICAL MACHINES. 
I have nearly perfected arrangements for bringing forward a new 
Patent Electric Machine, yielding long sparks and adapted to the 
means of our academies and schools. The price will be about 
twenty-five dollars each. The larger electric machines now made 
here are materially reduced in price, in consequence of decline in 
cost of making. 
BALANCES AND WEIGHTS 
My patrons will receive herewith a list of Balances and Weights 
published by Henry Troemner, which they will please substitute for 
those of Becker & Sons, published in my Catalogue of ’72. Mr. 
H. Troemner having appointed me a special agent here for his Ana- 
lytical Balances and Weights, all sold by me are guaranteed fully 
equal to any sold in this country. 
CHLORIDE OF CALCIUM TUBBS. 
Two Bulb with Interior Tubeeach, $0.50 
This is a new form of Chloride of Calcium Tube devised 
by Prof. Mixter, of Sheffield Scientific Schoo], New Haven, 
and in use at that Institution. It is an improvement upon 
Jhe old form of drying'tube, the difference consisting in tlie 
addition of a small interior tube, reaching nearly across tlie 
smaller of the two bulbs. The advantage which it has over 
the old form can be seen at a glance, although no one can 
fully appreciate its usefulness without having used both 
styles. When in use, the gas is caused to flow from the 
smaller end to the larger one, the large bulb and tube being 
filled with the drying material, chloride of calcium. 
During the passage of the hygrometric gas, the aqueous 
vapors condense for the most part, in the smaller bulb, only 
a comparatively small amount being carried over into the 
chloride of calcium. For this reason the latter may be used 
over again, and the operation repeated several times without refill- 
ing the tube. 
No. 3678. E. B. benjamin’s descriptive catalogue 
The part which the small interior tube plays is, to keep.the water 
which collects in the small bulb from running into the large one, 
a disadvantage to which the old form is subject. Furthermore, the 
tube may be used in an inclined or even vertical position without 
inconvenience, and still do excellent service. 
The use of cotton may be'dispensed with in this form of appara- 
tus, as the very small bore of the interior tube will, if care be taken 
to select lumps of chloride of calcium (instead of the same pow- 
dered}, prevent them from falling through into the small bulb. 
RADIOMETERS. 
Crookes’e.ach, $7.50 to $9 
The Radiometer, invented by Wm, Crookes, Esq., 
F. R. S., of England, and manufactured in its most 
elegant form by Dr. Geissler, of Germany, the man- 
ufacturer of the world-renowned “ Geissler Tubes,” 
(who has appointed me his agent for their sale), is 
shown in the accompanying figure B. It consists 
in the main of four radial arms of very thin metal, 
carrying at their extremities diamond-shaped pieces 
of a peculiarly light substance, the character 
of which varies somewhat in each manufactory. The 
system is delicately poised at its centre upon a nee- 
dle fastened into the extremity of an upright rod of 
glass, and kept from falling from the same by a vertical glass tube 
whose lower extremity projects over the cap of glass which rests upon 
the needle and upon which the arms are fastened. The whole is 
enclosed in a shell of glass, pleasing in design and strong enough to 
resist the pressure of the external atmosphere (for the apparatus is 
exhausted as perfectly as can be done by a sprengel pump, to obviate 
as much as possible the resistance which would be caused by the 
air). 
Upon placing the apparatus in the sunlight, or allowing the 
light from a magnesium or electric light to fall upon it, the radial 
arms begin to revolve and continue to move as long as the light 
rays last, the velocity of the revolution increasing or decreasing in 
proportion to the intensity of the light. 
No. 3672. E. b. benjamin’s descriptive catalogue 
PROF. RICHARDS’ ASPIRATOR. 
A substitute for the Bunsen Pumpeach, $1 50 
C represents the Aspirator invented by Prof. Robert H. 
Richards, of the Mass. Institute of Technology, Boston, 
and used for the purpose of quick filtration. It is the re- 
sult of a number of careful experiments made by the above 
gentleman, and for simplicity of design and the ease with 
which it can be manipulated, together with its efficacy, it 
recommends itself to all who wish a good effective filter- 
pump, withont being compelled to pay the high price 
which a more elaborate piece of apparatus would obviously 
command. In order to use this pump, all that is necessary 
to do is to connect the tube at the top with the faucet of 
an ordinary hydrant by means of a length of rubber tubing, 
whilst the filtering flask carrying the funnel is attached to 
the tube left of the pump. Upon allowing the wa- 
ter to flow through the latter, the air in the cylindrical 
part surrounding the small interior tube is caught, as it 
were, by the water and drawn into the lower tube, thus producing 
a rarefaction of the air in the tube at the left and in the filtering 
flask. The result is a flow of water through the funnel and its 
contained precipitate, and a thorough washing of the latter. By 
continuing the working of the pump after washing the precipitate, 
the latter may be so completely dried as to be ready for ignition in 
a crucible, and the pump is also cleared well at the same time. As 
a certain ratio exists between the size of the orifice of the interior 
tube, the diameter of the exterior tube, and the force of water issu- 
ing from the hydrant, it will be necessary for parties ordering the 
apparatus of me to state the approximate fall and force of water at 
their command, that the pump may be made to correspond. 
No. 3673. 
FUNNEL FOR RAPID FILTRATION. 
Casamajor’s modification of Carmichael’s process.ear ,/,.$0 50 cents. 
This is represented at D as a small inverted funnel. 
The original funnel, as conceived by Carmichael, was 
ihade entirely of glass, with a bottom perforated with 
fine holes, these holes being produced, whilst tne glass 
was in a state of semi-fluidity, by means of a red-hot 
needle. This being a very uncertain, if not an impos- 
sible undertaking, the idea occurred to Mr. P. Casa- 
major, of Williamsburgh, that by making use of a funnel provided 
with a movable bottom or diaphragm of platinum, the end might 
be attained. This funnel was tried and found to answer all that 
was required of it, and it is now offered to the chemist as a cheap, 
No. 3674. E. B. BENJAMIN’S descriptive catalogue 
efficient and very convenient apparatus for rapid filtration. It is 
made, as shown in the cut, of glass, with its stem bent at a right 
angle, the part shaped like a bell being provided with a circular 
disc of platinum perforated with fine holes. (The disc is not shown 
in the diagram.) 
The modus operandi is as follows: The disc, whose diameter is 
about 20mm., is laid upon a piece of filter-paper (Swedish being 
generally preferred), and a circle of 25mm. is cut out of the latter, 
thus leaving a small margin all around the edge of the platinum. 
The latter is then separated from the paper and laid upon the fun- 
nel, completely covering the large opening. The paper is then 
moistened and laid over the platinum, covering it and extending 
over the edge all around, where it is brought in contact with the 
glass. 
The Funnel is then connected by means of a rubber tube attached 
to its stem with the flask which is in turn put in communication 
with the filter pump. The mouth of the Funnel, which is quite 
small, is then placed in the platinum or porcelain vessel in which 
the precipitate is to be ignited, and the liquid containing the latter 
is poured into the vessel. Upon starting the pump, the filtration 
begins and is continued as long as necessary, the final result, after 
washing, &c., being a precipitate in 'the dish with a small disc of 
paper upon it, the ash of which, after ignition, may be disregarded. 
The upper edge of the Funnel holds a little of the precipitate which 
may be weighed with the Funnel itself. 
IMPROVED FORM OF LIEBIG’S POTASH BULB. 
By Alvergniat Freres, Pariseach, $1.00 
This piece of apparatus is shown at E, and dif- 
fers from what ha? always been known as Liebig’s 
Potash Bulb in having the lower bulbs connected 
by curved instead of straight tubes; at the same 
time the circular bulbs at the side are replaced by 
pear-shaped ones, the latter as well as the extra 
length of tubing giving increased contact of gas 
and liquid and thereby increased absorption. Again, the extension 
of the tubes (at the lower part) to one side, forms a base of support 
so that the apparatus may be placed upon the pan of the balance 
and readily weighed without the trouble of attaching wires to the 
upper part, and hanging it to the beam. 
These bulbs are used by many at present in preference to the 
older form, and bid fair, in time, to supersede them, for this is an 
age of progress as well in the chemical laboratory as anywhere else, 
and it is but natural *for the analyst to select for his work those 
pieces of apparatus which can be most conveniently used while at 
the same time performing their work satisfactorily. 
No. 3675. E. B. benjamin’s descriptive catalogue 
FILTER QUICK, CASAMAJOR’S 
Each, $0.75. 
This Filter has been fully described in the 
August, 1875, number of the American 
Chemist, and is found to be very useful not 
only in Filtration, but also in thoroughly 
drying the precipitates afterwards. 
CONSTANT WATER BATH LEVEL. Each $7.50 
The cut annexed represents a very 
useful copper apparatus, contrived by 
Dr. J. Lawrence Smith, of Louisville, 
to maintain a continued level of water 
in a series of water baths. 
The outer vessel has an arm which 
sustains a glass pipette drawn at the 
lower end (C) and held in position by 
small pieces of caoutchoue tubing 
(A & B). This pipette passes through 
the metallic swimmer (E) placed with- 
in the above named vessel. Under 
the bottom of the swimmer is an elbow 
supporting a rubber cushion (F), which 
—when the swimmer is buoyed above 
the desired level—presses against the 
drawn point of the pipette and stops 
the flow of water. The top of the 
glass pipette (B) is united to the’ wa- 
ter supply, and the discharge tube (D) 
projecting from the foot of the outer vessel, is connected with the 
water baths. 
No. 3678. IRON OXYGEN RETORT. Price, 84.00 
Dr. Smith has also designed a very available iron retort for oxy- 
gen, consisting of a cap, five inches in diameter, fitting, by a water- 
groove into a base of same width. From the top of this cap a 
piece of ordinary iron gas pipe runs up eighteen inches ending in a 
gallows screw connection to attach to the receiver. 
No. 3679. PORCELAIN CONCENTRIC RINGS. 
for use on small Evaporating Dishes ; as water Baths. Per set, $1.25. 
These rings are now very much used by the European Chemists, 
as they can be applied to any small vessel. Suitable for water Bath 
and also be used as supports over crystalizing Dishes and Jars. 
No. 3676. 
No. 3677. E. B’ BENJAMIN’S DESCRIPTIVE CATALOGUE 
Buyers cannot be too much impressed with the 
absolute advantage of purchasing direct from a respon- 
sible dealer in chemical apparatus, who understands the 
uses of such goods, and has a reputation at stake in his 
special line ; who has the goods in stock adapted to the 
purposes advertised, and has no occassion to provide 
any makeshift of supposed resemblances to catalogue 
illustrations. Very frequently I receive advices’ from 
chemists, stating that they have handed orders for appa- 
ratus, chemicals &c., selected from my Catalogue, to 
dealers near them, which goods were never bought from 
me by their agents, resulting in furnishing the chemist 
with poor apparatus, and reflecting unjustly on the 
character of my stock. Only by buying direct can the 
chemist be sure that his entire order comes from a dealer 
in chemical apparatus 
Every intelligent chemist knows that the labor of 
preparing an analysis, is liable to be lost from the use of 
imperfect or badly annealed vessels, and will therefore 
avoid investing in poor articles because they may happen 
to be cheap. 
E. B. BENJAMIN