Previous studies have implicated indole-3glycerol phosphate as an intermediate in the biosynthesis of tryptophan in Escherichia coli (Yanofsky, 1956a, b) and Neurospora crassa (Yanofsky and Rachmeler, 1958; DeMoss, Imai, and Bonner, 1958; Suskind and Jordan, 1959). It has also been established that this compound is converted to tryptophan by the enzyme tryptophan synthetase in both organisms (D...

SUB has scheduled a Listening Hour in Brubacher Sunday a t 2 p.m. The speaker will be Morris Barger, Professor of Education. His topic is " W h a t the Topic of My Last Lecture Will Be." Following Dr. Berger's talk coffee will be served. T h e program for Sta te Fair will be provided by SUB, and will be distributed a t the admissions desk. At the present time SUB consists of the following membe...