Department of Chemistry. PROFESSOR W. N. HAWORTH, F.R.S. Director. PROFESSOR M. STACEY. Telephone: SELLY OAK 118). THE UNIVERSITY, EDGBASTON, BIRMINGHAM 15. ist September, 1948, ‘Dr. Joshua Lederberg, en nennEeee Ass't Prof. Genetics, Department of Genetics, The University of Wisconsin, College of Agriculture, MADISON 6, Dear Dr. Lederberg, Wisconsin, U.S.A, I'm afraid we have not got the glucosides you require but we have got the parent sugars. If you can wait a few months I could probably get the glucosides made for you. . Best wishes and also to M. Awaiting your comments. Seidman, Yours sincere ly, Wty