DANIEL DAVIS, JE. NO. 428 WASHINGTON STREET, BOSTON, MASS. MANUFACTURES AND KEEPS FOR SALE Instruments to illustrate the Principles of GALVANISM, ELECTRO-MAGNETISM, ELECTRO-DYNAMICS, MAGNETO-ELECTRICITY, MAGNETISM, THERMO-ELECTRICITY. FOR SALE ALSG BY JOSEPH M. WIGHTMAN, NO, 33 CORNHILL, BOSTON. Figiire.* Price. 1. Two Bar Magnets and Armatures, in box,...$3,00 to 5,00 2. Compound Bar Magnet,..................... 2,50 to 4,00 3. Horseshoe or U-Magnet,.................... ,25 to ,75 4. Compound U-Magnet,...................... 2,00 to 5,00 5. Magnetic Needle, on brass stand,............ ,75 to 1,00 6. Small Dipping Needle,...................... 1,00 to 1,50 f). Smee's Battery, (each pair,)................. 1,50 to 2,00 12. Large Sulphate of Copper Battery,........... 7,00 Sulphate of Copper Battery, (medium size,)... 5,00 Small Sulphate of Copper Battery,........... 2,00 13. Protected Sulphate of Copper Battery,....... 1,25 15. Protected Sulphate of Copper Battery,....... 1,50 to 2,00 * The numbers in the first column correspond with those of the cuts in Davis's Mnnual of Magnetism, 2d ed. CATALOGUE Figure. Price. 17. Grove's Battery, (single pair,)...............$2,00 to 2,50 18. Grove's Battery, in box, (per pair,).....1,50—2,00 & 2,50 20. Large Trough Battery, (100 pairs,).......... 85,00 21. Grasshopper Battery,........................ ,25 to ,50 22. Frog, or Leech Battery,..................... 50 to ,75 25. Double Forceps, on stand,...................2,00 to 5,00 26. Powder Cup, of glass,...................... ,25 Powder Cup, of brass,...................... ,50 27. Voltaic Gas Pistol,......................... 2,50 28. Decomposing Cell, with one gas tube,....... 2,50 Decomposing Cell, with two gas tubes,...... 3,50 29. Cell for delicate decompositions,............. 2,00 to 3,00 30. Divided Tumbler, for decompositions,........2,00 to 3,00 31. U-Tube, on stand,.......................... 3,50 32. Smee's Battery, (improved,)................. 3,00 to 5,00 34. Smee's Battery, for gilding and silvering, (per pair,) 2,00 35. Smee's Battery, for gilding, &c., (improved,) 1,50 to 2,00 38. Thermo-Electric Pair,....................... ,25 39. Delicate Galvanometer,..................... 3,00 to 5,00 40. Thermo-Electric Series, (10 pairs,).......... 2,00 41. Thermo-Electric Battery, (SO pairs,)......... 25,00 42. Cold and Heat Instrument,................. 3,00 52. Astatic Needle, on stand,................... 1,50 to 2,00 53. Simple Galvanometer,......................2,50 to 3,50 54. Horizontal Galvanometer,................... 6,00 55. Upright Galvanometer,..................... 5,00 56. Magnet revolving round Conductor,......... 6,00 57. Magnet revolving on its Axis,.............. 6,00 58. Revolving Wire Frames,.,.................. 8,00 59. Revolving Cylinders,.......,............... 8,00 60. Rotating Batteries,......................... 8,00 61. Vibrating Wire, (with magnet,).............. 5,00 62. Vibrating Wire, with fixed magnet,.......... 6,00 63. Gold Leaf Galvanoscope,...................5,00 to 7,00 64. Revolving Spur-Wheel,..................... 5,00 to 8,00 65. De la Rive's Ring, in small glass cup,...... 1,00 66. Vibrating Coil Engine,..................... 8,00 67. Reciprocating Coil Engine................... 10,00 68. Reciprocating Magnet Engine,.............. 10,00 CATALOGUE. *V«rf Price. 69. Revolving Coil,............................ ^qq 71. Revolving Rectangle,....................... 6 00 72. Revolving Galvanometer Needle,............ 6,00 to 7,00 73. Revolving Coil and Magnet,................ 8,00 to 10,00 74. Thermo-Electric Revolving Aran,............ 2,00 75. Thermo-Electric Arch, on U-magnet,......... 4,00 76. Thermo-Electric Revolving Frames,.......... 6,0C 77. Thermo-Electric Arch, between poles of U-magnet, 4,00 78. Double Thermo-Electric Revolving Arch,___ 6,00 79. Magnetic Needle, (on brass stand,).......... 75 to 1,50 80. Large Dipping Needle, on universal joint,.... 4,00 to 6,00 82. Bar Magnots, in frame, (to illustrate Earth's magnetism,) 6,00 84. Globe, with Coil and two Needles,.......... 4,00 87. Star-shaped Iron Plate,..................... ,75 89. U-Magnet and Rolling Wires,............... 1,00 to 2,00 90. Y-Armature,............................... ,30 92. Rolling Armature, with U-magnet,........... 2,00 93. Magnet Armature and Roller,............... 1,50 1)4. Short Rolling Wire, with U-magnet,......... 1,00 to 1,50 !)9 Iron Wire, sealed up in glass tube, (with magnet,) ,75 100. Instrument for measuring Attractive Force,... 15,00 101. Bar Magnet, for fracturing, each,............ ,12 107. Helix, on stand, (with iron bar,)............. 2,00 to 2,50 108. Heliacal Ring and Semicircles, (ball and socket joints,) 5,00 109. Heliacal Ring and Semicircles,.............. 2,50 to 4,00 110. Grove's Battery, with covered top,.......... 6,00 to 8,00 111. Heliacal Ring and Double Cylinders,........4,00 to 6,00 112. Flat Spiral, per lb.,......................... ,75 to 1,00 113. Magnetizing Helix, per lb.,................. 1,25 to 1,50 114. Axial Bell Engine,......................... 8,00 115. Axial Revolving Bar,.......................6,00 to 8,00 116. Inclined Revolving Bar,....................5,00 to 6,00 117. Inclined Bar revolving round Conductor, .... 6,00 118 Axial Revolving Circle,..................... 10 to 12,00 119. Vibrating Helix,............................ 4,00 120. Double Helix and U-shaped Bar,............ 1,50 121. Double Axial Bell Engine,.................. 8,00 122. Upright Axial Engine,...................... 15,00 123. Horizontal Axial Engine,................... 18,00 OF APPARATUS. Figure. Price. 124. Double Beam Axial Engine,..............$ 15,00 to 18,00 125. Single Beam Axial Engine,................. 15,00 L26. Small Electro-Magnet,...................... ,75 to 1,00 127. Electro-Magnet, in frame,................... 8,00 to 12,00 L28. Electro-Magnet, in case,....................10,00 to 25,00 129. Electro-Magnet, with three poles,........... 3,00 130. Steel Bar, of the U form, for charging,...... ,25 to 50 131. Magnetometer,............................. 12,00 132. Axial Magnetometer,.......................12,00 to 15,00 133. Electro-Magnetic Telegraph,................. 5,00 134. Telegraph, with Clock-work,................25,00 to 35,00 135. Signal Key,................................ 2,50 136. Axial Receiving Magnet,................... 20,00 137. Axial Telegraph,...........................6,00 to 10,00 138. Axial Telegraph, with Clock-work,..........25,00 to 35,00 139. Axial Telegraph, with Engine,.............. 35,00 140. Reciprocating Armature Engine,.............10,00 to 12,00 141. Horizontal Reciprocating Engine,...........18,00 to 20,00 142. Revolving Armature,....................... 3,50 143. Revolving Armature Engine,................ 6,00 144. Vibrating Armature Engine,................. 10,00 145. Vibrating Armature Engine,................. 8,00 146. Revolving Electro-Magnet,.................. 3,00 147. Revolving Bell Engine,.....................10,00 to 12,00 148. Registering Revolving Magnet,.............. 6,00 to 8,00 149. Electro-Magnet, revolving by the Earth's action, 8,00 150. Electro-Magnet, revolving by the Earth's action, 7,00 151. Electro-Magnet, revolving within a coil,..... 8,00 152. Double Revolving Magnet,.................. 7,00 to 8,00 153. Revolving Wheels, with electro-magnet,..... 8,00 154. Revolving Wheels,.........................8,00 to 10,00 155. Electro-Magnet, revolving on its axis,........ 7,00 156. Iron Bar, for showing magnetic induction of Earth, ,75 159. Attracting and Repelling Wires,............. 3,50 160. Contracting Helix,......................... 3,50 162. Electro-Dynamic Revolving Coil,............ >. 6,00 163. Electro-Dynamic Revolving Rectangle,...... 7,00 164. Instrument for showing the revolution of Mercury, 4,00 Same Instrument, with iron cup,............ 5,00 CATALOGUE. Figure. Price. 165. Clock-work Electrotome,.................. $ 6,00 to 7,00 167. Fine Wire Coil, per lb.,.................... 1,50 168. Double Helix and Electrotome,.............. 20,00 172. Galvanometer, Astatic Needle,.............. 5,00 173. Magneto-Electric Machine,..................30,00 to 35,00 174. Improved Magneto-Electric Machine,........40,00 to 45,00 175. Magneto-Electric Machine, with Vibrating Electrotome, 45,00 176. Vibrating Electrotome,...................... 4,00 to 5,00 177. Magneto-Electric Machine, for quantity,..... 40,00 179. Separable Helices, with handles,............10,00 to 12,00 181. Separable Helices and Electrotome,.......... 20,00 Apparatus for showing the Suspension in Air of an Iron Rod by Repulsion,............... 3,00 182. Double Helix and Vibrating Electrotome, with Battery and Handles,....................10,00 to 12,00 183. Compound Magnet and Electrotome,.........8,00 to 10,00 184. Apparatus for showing Induction of the Earth, 12,00 INSTRUMENTS IN THE MEDICAL APPLICATION OF ELEC TRICITY. —SECOND EDITION. Figure. Price. 1. Galvanic Battery, (according to size,)........ $2, 5, 7,00 2. Electro-Magnetic Apparatus, with Battery and Handles,................................8,00 to 10,00 3. Electro-Magnetic Apparatus and Revolving Armature with Battery,.................. 15,00 4. Electro-Magnetic Apparatus and Vibrating Armature,..............................10,00 to 12,00 5. Electro-Magnetic Box Apparatus, (complete,). 12,00 6. Magneto-Electric Machine,..................30,00 to 35,00 7. Improved Magneto-Electric Machine, ....---25,00 to 30,00 8. Box Magneto-Electric Machine,.............30,00 to 35,00 Covered Copper and Iron Wire, per lb. Fine Platinum Wire for Experiments. tW Davis's Manual, second edition, 12mo, 328 pages, with 180 original Illustrations, neatly bound, $1,25. f3TPersons addressing the publisher and remitting $1, post paid, •an receive a copy in paper covers by mail CATALOGUE OF APPARATUS, TO ILLUSTRATE MAGNETISM, GALVANISM, ELECTRO- DYNAMICS, ELECTRO-MAGNETISM, MAGNETO-ELECTRICITY, AND THERMO-ELECTRICITY. MANuTACTTJRED AND SOLD BY DANIEL DAVIS, MAGNETICAL INSTRUMENT MAKER; No. 428 Washington Street, BOSTON. 1852. CATALOGUE OF APPARATUS. The Cuts are numbered in correspondence with Davis's " Manual of Magnetism," 2d Edition, where full descriptions will be found. Those lettered A, B, C, Sfc, are additional. MAGNETISM. Fig. 1. Figure 1. Two Bar Magnets ajid Ajmatures, in box. Price $3. to 5.00. Fig. 2. -. 2. Compound Bar Magnet. Price $2.50 to 4.00. DA Vis's CATALOGUE Fig. 5. Fig. 3. Fig. 4. Fig. 3. U Magnet. Price 25 to 15 cents. Fig. 4. Compound U Magnet. Price $2. to 5.00. Fig. 5. Magnetic Needle, on brass stand. Price 75 cts. to $1.00. Fig. 79. Fig. 79. Magnetic Needle, on brass stand. Priec 75 cts. to $1.50. OF APPARATUS. 5 Fig. 6. Fig. 52. Fig. 80. Large Dipping Needle, on universal joint. Price $4. to 6.00. Fig. 6. Small dipping Needle. Price $1. to 1.50. Fig. 52. Astatic Needle, on stand. Price $1.50 to 2.00. Fig. 93. Fig. 93. Magnet, Armature and Roller. Price $1.50. DA Vis's CATALOGUE Fig. 90. Fig. 92. Fig. 90. Y Armature. Price 30 cents. Fig. 92. Rolling Armature, with U Magnet. Price $2.00. Fig. 89. Fig. 94, Fig. 99. n G TH Fig. 89. U Magnet and Rolling Wires. Price $1. to 2.00. Fig. 94. Short Rolling Wire, with U Magnet. Price $1. to 1.50. Fig. 99. Iron Wire, (sealed up in glass tube,) with Magnet. Price 75 cents. OP APPARATUS. 7 Fig. A. Fig. B. GALVANISM. Fig. 12. Fig. 9. Smee's Battery. Price $1.50 to 2.00 per pair. Fig 12. Sulphate of Copper Battery. Price for large, $7.00, medium size, $5.00, small size, $2.00. Fig. 15. Protected Sulphate of Copper Battery. Price $1.50 to 2.00. 8 davis's catalogue Fig. 34. Smee's Battery for Gilding and Silvering, (per pair.) _ Price $2.00. Fig. 35. Fig. 32. Smee's Battery. Price $3. to 5.00. Fig. 17. Grove's Battery, (single.) Price $2.00, OF APPARATUS. Q Fig. C. Grove's Battery, Four Pairs. Price $8. Fig. 18. Fig. 18. Grove's Battery, in box, (per pair.) Price $1.50, 2.00 and 2.50. Fig. 22. Fig. 22. Frog or Leech Battery. Price 50 to 75 cents. ��.-/.+/++/::///.:���50.��51552///./.�� 10 davis's catalogue. Fig. 27. Fig. 21. Grasshopper Battery. Price 50 cents. Fig. 27. Voltaic Gas Pistol. Price $2.50. Fig. 25. Fig. 28. Fig. 25. Double Forceps, on Stand. Price $5.00. 9999999� 97 OF APPARATUS. 11 Fig. 28. Decomposing Cell. Price with one gas tube, $2.50 : with two gas tubes, $3.50. Fig. 30. Divided Tumbler, for Decompositions. Price 2. to 3.00. Fig. 29. Fig. 31. Fig. 29 Cell for delicate Decompositions. Price $2.00 to 3. Fig. 31. U-Tube, on stand. Price 3.50. ¥'\o. D. Galvanic Lamp. Price, without the Batterv. $2.o0. 12 DAVIS S CATALOGUE Fig. 26 Fig. 26. Powder Cup, of glass, Price 25 cts.; of brass, 50 cents. ELECTRO-DYNAMICS. Fig. 159. Fig. 162. Fig. 159. Attracting and Repelling Wires. Price $3.50. Fig. 162. Electro-Dynamic Revolving Coil. Price $6.00 OF APPARATUS. 13 Fig-. 160. Fig. 163. Fig. 160. Contracting Helix. Price $3.50. Fig. 163. Electro Dynamic Revolving Rectangle. Price $7.00. Fiff 165. Clock Work Electrotome. g' Price $6.00 to $7. 14 davis's catalogue Fis-. 167 Fig. 167. Flat Spiral. Price, per lb., 75 cents to $1.00 ; Fine Wire Coil, per lb., $1.50. Fig. 168. Fig. 168. Double Helix and Electrotome. Price $20.00. OF APPARATUS. 15 Fig. 164. Fig. 164. Instrument for showing the rotation of Mercury. Price $4.00; with iron cup, $5.00. ELECTRO-MAGNETISM. Fig. 53. Simple Galvanometer. Fig. 54. Horizontal Galvanometer. Price $6.00. Fig. 55. Fig. 61. Fig. oo. Upright Galvanometer. Price $5.00. Fig. 61. Vibrating Wire, (with magnet.) Price $5.00. OF APPARATUS Fig. 39. 17 Fig. 39. (! alvanometer with Astatic Needle. Price $5. to 8.00. Fig. 63. Fig. 62. Fig. 62. Vibrating Wire, with fixed ^gj^ ^ Fie 63 Gold Leaf Galvanoscope. Price $7.00. 8* ' 2* 2889999 18 da vis's catalogue Fig. 57. Magnet revolving on its own axis. Fig. 64. Revolving Spur-Wheel. Price $5 to 8.00. Fig. 69. Revolving Coil. Price $6.00. OF APPARATUS. Fis. 65. 19 Fig. 65. De la Rive's Ring, in small glass cup. Price $1.00. Fig. 107. Fie 107 Helix, on stand, (with iron bar.) Price $2. to 2.50. 20 DA Vis's CATALOGUE Fig. 108. Fig. 72. Revolving Galvanometer Needle. Price $6. to 7.00. Fig. 108. Heliacal Ring and Semicircles, (ball and socket joints.) Price $5.00. Fig. 84. Fig. 84. Globe and Coil, with Magnetic and Dip- ping Needle. (See Fig. 6.) Price $4.00. OF APPARATUS. Fig. 109. 21 Fig. 109. Heliacal Ring and Semicircles. Price 2.50 to $4.00. Fig. 110. Grove's Battery, (covered.) Price $6. to 8.00. 5 22 DAVIS S" CATALOGUE. Fig. 113. Fig. 111. Fig. 111. Heliacal Ring and Double Cylinders. Price $4. to 6.00. Fig. 113. Magnetizing Helix. Price (per lb.) $1.25 to 1.50. Fig. 120. Fig. 120. Double Helix and U-shaped Bar, im- proved, n Price 2.50. Fig. 112. OF APPARATUS. 23 Fig. 129. Fig. 112. Flat Spiral. - Price (per lb.) 75 cts. to $1.00. Fig. 129. Electro-Magnet, with three poles. Price $3.00. Fig. 115. Fig. 115. Axial Revolving Bar. Price $6. to 8.00 24 DA VIS'S CATALOGUE Fig. 116. Fig. 117. Figs. 116—117. Inclined Revolving Bar, and Bar revolving round Conductor. Price $7.00. Fig. 122. Fig. 126. Fig. 122. Upright Axial Engine. Price $15.00. Fig. 126. Small Electro-Magnet. Price 75 cts. to $1.00. 485323482353232353482348484823484853 OF APPARATUS. 25 Fig. 121. Double Axial Bell Engine. Fig. 124. Price $8.00. Fio- 1 do. 75 cts. OF APPARATUS. 39 Fig. I. Fig. I. Galvanic Slipper, per pair. Fig. G. $1.25. Fig. G. Apparatus for showing the Suspension of an Iron Rod by Repulsion. Price $4.00. Fig. 184. Fig 184. Apparatus for induction of Electricity by the earth. ^ice $12.00. 40 DA Vis's CATALOGUE THERMO-ELECTRICITY. Fig. 38. Fig. 40. Thermo-Electric Series, (10 pairs.) Price $2.00. Fig. 41. Fig. 41. Thermo-Electric Battery, (60 pairs.) Price $25.00. OF APPARATUS. Fig. 42. 41 Fig. 42. Instrument for showing the production of oold and heat by Galvanism. Price $3.00. Fig. 77. Fig. 76. Fie 76 Thermo-Electric Revolving Frames. b' ' Price $6.00. F'm 11 Thermo-Electric Arch, between poles of S ' Price $4.00. a U-Magnet. 4* 42 DAVIS'S CATALOGUE OF APPARATUS. Fig. F. Fig F. Receiving Magnet for the Telegraph. *' Y Price $12.00. Fig. G. Fig G. Electro-Magnetic Telegraph, with clock work. Price $20 to $50. DAVIS'S CATALOGUE OK APPARATUS. 43 Fig.H. Fig. H. Telegraphic Call or Alarm. Fig. I. Price $12. Fig. I. Bain's decomposing Telegraph. * Price $25 to $100. 44 DAVIS'S CATALOGUE OF APPARATUS. Fig. J. Fig. J. House's Printing Telegraph. Fig.K. Fig. K. Horn's Igniting Telegraph. DAVIS'S CATALOGUE OF APPARATUS. 45 Fig. L. Fig. L. Signal Lever. Fig. M. Price $4.50. Fig. M. Electrotype Battery and Decomposin Trough. $15 to $% Fig. N. Fig. N. Electro-Magnetic Locomotive and Car. ^ $35.00- 46 DAVIS'S CATALOGUE OF APPARATUS. Fig. F. Fig. F. Box Apparatus for Medical use. Price $10, 12, and 14.00. Covered Copper Wire, per lb., 75 cents to $1.50. Platinum Wire and Foil. Fine Platinum Wire for experiments. Porous Cells for Galvanic Batteries. Zinc Cylinders and Plates for Batteries. Platinum Slips for Grove's Batteries. Apparatus for Gilding and Silvering, with instructions. Telegraphic Apparatus for Telegraph Lines, made and repaired. EF5" Davis's Manual, second edition ; 12mo, 328 pages, with 180 original illustrations, neatly bound, $1.25. Persons addressing the publisher and remit- ting $1.00, post paid, can receive a copy in paper covers by mail: postage to any part of the United States, will not exceed 12| cents.