NEW YORK STATE COLLEGE OF AGRICULTURE
CORNELL UNIVERSITY

ITHACA, NEW YORK +

 

LABORATORY OF BACTERIOLOGY

March 24, 1949

Dr. Joshua Lederberg
Genetics Department
University of Wisconsin
Madison 6, Wisconsin

Dear Joshua:

Just anote toe xplain my silence recmtly. Until about the
middle of April I won't be able to do too mich work with the
cultures. After that time I should be able to concentrate on it
and get the job done. I have a couple of series of cultures from
the first "H72" in which I have had a little trouble classifying
the cultures. JI also have one clear-cut segregant in a pedigree
from the bonafide H72. I will send these cultures to you this
week-end.

I did not discover yourletter which came with the H168 culture
until I got your other letter. I haven't tried it yet on xylose or
mannitol, but will plate it today. I wonder how your supply of
xylose is; we are out, have some on order but it has not shom UP »
so a few grams of xylose might help out. I will send the reprints
in a few days. ,

Very truly yours,

Max RJ Zelle
MRZ jc