LEDERLE LABORATORIES DIVISION

PEARL RIVER, NEW YORK + CABLE ADDRESS: LEDLAB - TELEPHONE: PEARL RIVER B01

June 18, 1947

Dr. Joshua Lederberg
Department of Botany
Yale University

New Haven, Connecticut

Dear Doctor Lederberg:

Enclosed please find a copy of the paper which will appear in the
October issue of the Proc. Soc. Exp. Biol. and Med. Thanks agein for
your suggestion concerning terminology. If you do not need the manus-
cript any longer I would appreciate having it back - it is the only
extra copy I have.

Please remember me to Dr. Tatum,

*
Very sincerely yours,

AY. hick
ATW/MB As Je Wail, M.D.
P, S. I also enclose a copy of the paper on growth requirements which

I mentioned to you. If considered under the point of view of mtat-

fons it gives data which are of some interest to you.