BROWN UNIVERSITY

PROVIDENCE 12, RHODE ISLAND

November 28, 1917

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

Dear Dr. Lederberg:

I regret to say that our stock of coliforms
fermenting lactose at room temperature but rot at
37° have been discarded. You should, however, have
no trouble isolating such forms from soil that has
been free from human habitation for some time, or
from grains such as oats, wheats and so forth.

Very truly yours,

Catia

GC. A. Stuart
Professor, Blology Department

CAS:med