October %, 1948

AIRMAIL

Dr. Stig Veibel
Chemical Iaboratory of the University
Copenhagen, Denmark

Dear Dr, ,cibel:

We are engaged in a study of the genetic control of the
specificities of bacterial galactosidase, Your papers on the
galactosidase of yeast and of seeds would be very helpful to
us, I would be sspecially obliged to receive reprints if
available of your earlier papers on the theoretical aspects
of enzyme substrate and enzyme inhibitor analysis,

Yours with many thanks,
Sincerely,

a

Joshus Ledarberg
asst, Prof. of Genetics

JL/b