THE UNIVERSITY OF CHICAGO

CHICAGO 37-ILLINOIS

INSTITUTE OF RADIOBIOLOGY AND BIOPHYSICS

5650 Ellis Avenue

December 14, 1951

Dr. Joshua Lederberg
Department of Genetics

The University of Wisconsin
Madison 6, Wisconsin

Dear Josh,

Enclosed are prints of the glassware design. As you
will notice, I have changed several of the joints so as to
decrease the likelihood of contamination. Our glassblower, C.
C. van Hespen, will make them up for about $55.00 a set. You
can write directly to him c/o the Chemistry Department.

_ < would like to echo Szilard's sentiments about how
nice Norton behaved while here. He stood up very well to
Szilard's third degree and, in addition, gave really a nice
little talk. Your training was ever in evidence.

I saw Roger on his way east. He told me of Konod's
review of adaptive enzyme formation. I would like very much to
be able to see it. Would it be possible to borrow it for a
couple of days?

Nothing exciting here. Our experiments are being
hindered by a mold which has suddenly appeared and seems to creep
through our best filters into our chemostats.

Delbruck will visit us Wednesday and Thursday next.
If you would like to come down we would be very happy to put you
up in our new spacious place. Luria may come up or Max may go
down to Urbana Wednesday night.

Sincerely,
Aaron Novick

AN/sds
Enclosures