FEDERAL SECURITY AGENCY
U.S. PUBLIC HEALTH SERVICE

NATIONAL INSTITUTE OF HEALTH

 

IN REPLYING, ADDRESS THE BETHESDA 14, MARYLAND

Experimental Biology
& Medicine Institute March 26, 1948

Professor Joshua Lederberg
Department of Genetics
College of Agriculture

The University of Wisconsin
Madison 6, Wisconsin

Dear Professor Lederberg:

Under separate cover we are forwarding to you four
samples as follows;

(1) 0.2 g. neolactose

(2) seed crystals of lactositol

(3) 065 g. a~epilactose monohydrate, prepared by
Dr. W. T. Haskins

(4) 1.0 g. 1,6-anhydro-B=D-galactose, prepared by
Dr. Raymond M. Hann.

We have not tried either of the last two with B-p-
galactosidase. Probably the epilactose would be hydro-
lyzed about as easily as lactose, and much more rapidly
than neolactose. The galactosan, I should guess, would
not be hydrolyzed, or only extremely slowly.

Let us know if we can be of any further aid in your
researches.

Very sincerely yours,

Reveoy K, Relig er

Nelson K. Richtmyer *
Principal Chemist

NKRschw Chemistry Laboratory