MEMO FROM TO: TX
J. LEDERBERG Mr. Denald F Fleck F¢
GENETICS DEPARTMENT

STANFORD UNIVERSITY
STANFORD, CALIFORNIA

Hydrezene Cerp.

SEP 22 1969

Dear Mr. Fleck:

I can understand yeur exasperatien abeut
the cemmitment ef public health efficiais
te chlerine. As yeu knew I believe? there
are many questiens that need te be investi-
gated far mere carefully than has se far
been dene.

We are in fact centinuing eur ewn re-~
search en the subject, and I will certainly
remember te send yeu a cepy ef eur reperts
when they are published. Until then, I
believe it is impertant te maintain an
epen and uncemmitted mind.

I am ebDiged te say that I have similar
reservatiens abeut ezene; namely that its
use will have te be subjected te an equally
careful scrutiny fer insidieus side-effects
te a degree that, likewwse, has net yet
been dene. I de enclese a brief repert
that illustrates ene aspect ef the ques-
tiens that remain te be answered.

I had written te the Chremalley Cerp.
abeut their knewledge ef this kind ef bie-
legical research, and must say that their
reply was mest disappeinting.

Yeurs sincerely,