REPUBLIQUE DEPARTEMENT DU TRAVAIL,
ET CANTON DE GENEVE DE L’HYGIENE ET DE L’ASSISTANCE PUBLIQUE

 

Genéve, le 18.12. 56

 

POST TENEBRAS LVA

INSTITUT D’HYGIENE

QUAI DE L'ECOLE-DE-MEDECINE
TELEPHONE 246273

Monsieur le professeur J.Lederbe:g
University of Wisccnsin

Dept. of Genetics

MADISON 6, Wisconséngf

 

Ne traiter qu’un seul objet
par lettre

Dear Dr Lederperg,

Many apologies for answering so late to vour card of sept.27.
Under separate cover, I send to you a few reprints, I believe you
already have from Kellenberger. On L forms, the other papers do not
have the same interest, for they were devoted to a bad experimental
system. I joined to this sending a typed report to the foundation
who allowed us to make this work, and was not piblished. The conclu-
sions relative to the phenotypic pressure are erroneous, the data
having not been clearly analysed at the time of this obligatory report.
I hope to be able to see you in the States next year, were
I will work for a time on APC viruses. I do not work with bacteria

now, unfortunately.

With best regards
Dr .V.“onifas