Dr. Wolfram Heumann | Braunschweig,19.1.58
Botanisches Institut. Humboldtstr.1
der Techn.Hochschule

£ ,
fork

Professor Dr. Joshua Lederberg
Department of Genetics:
University of Wisconsin

Madison/Wis.-USA
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Dear Joshua!

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Looking in my letter-case I gee as hamed: I, have, -#ritten the
last letter to you 4 months: “Bgo. First Barbara™ ang: TI thank:
very much to Esther and jouxfor the beautiful Debs 2 with |
Australian flowers and animals. We eqt ‘this prepig “ei tt ee
exactly at xmas. .

; COL a
In the first & months this year I made. 2 smaybebeolion
routinework for the Institute. In the past two mois. I have
repeatsthe . experiments: with ‘'B and sqm others with “another
starforming bacterium “Agrobacteriuy stellulatum. With Be I
get abaut* the “same recombinads#ion) x leg as in tke last wee
months" in Madis son. Buty ‘these xperiments “show: only we have ee
recombgsnat ion: “there are too ifew narkeng: to's anything +e” ve
Side! about, the: Sexual mode and to Gonnect- the morphological:
findings’ withthe gerfetical experiments A.. vary significant
result, T=gev with Agrobacterium steliulatum: fin ‘gro Ses 7
R Sm? ix S Sm® freuen streptomycine resistent’ x smoft strep-
le af

  

tomycine * sensitive et about 1% S SmP colpnies ut- in +s
ergss .R m9 x S§ ‘Sut T never found any R Sm® cells :

oak
MewThave extant ned many. ae SS}
BtO% offthges Si Sot o
sseristraifs. Somé Show -
eae ive manner. With iHis
Rot further genetical ‘s

ty
x

   

Working with, algae for: the
contaminating: ‘bacterial: stray 4g
starformers. Now I have: strggns fP
the starforming cycle in a very: z
material I hope I havea soldi _b

and morphological work.

 
  
   
 

 

    

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In the next. week begins. the’ ‘summent 5 Mister, end may I havé

to direct a- botanical excursion to. Corsica. poming | back I

have to performe my -habilitaga hee 11: 4 I. works Saye
“the research work “would: : row LOWLY, DI Sonat wil tite
grow, and I can. report. to: you. ‘in. Stockholm: some: new results

and we can prepare a publication...) ee, ¥

I get confirmed my ‘membérshiip to the congress | in - stooktictn
and I am very happy to meet’ Esther. and you there. Etrdvel :
to Stockholm with my car (Volkswagen) and J. and the car !
are at your disposal. In Brugelles is this year thé, big:
world-exhibition, and perhaps do you like to got therei |
Then you have a good occasion to y for some daysqyin Bruns- °
wick, I can show you my:lab, @nd some of my experiments; pnd
we can discuss all problems, extensively. - cn RL

Barbara would be very happy; to. see Esther and you sep

and Irene too.
I am sincéreli yours,

Wilpon ind " yegards Pe yor ithe

   

fey

reife Als

WW Abs

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