Replacement of Vitamins of the B-group by Amino Acids

rats. Since lathyrus peas are grown extensively as a forage crop, this problem is important also in animal husbandry. It is evident that the nutrition of the peoples of other continents than our own will become a matter of increasing concern to us in the years ahead. For this reason, it is desirable to understand the nut,ritive value of many foods not commonly used in America. The problems of lathyrism, favism, and related conditions, and diseases of nutrition associa.ted with intoxicants, should be investigated. It is not unlikely that other disturbances due t o similar toxic factors exist and may be important, particularly in periods of food shortage or among peoples whose nutrition is at a minimal level. HOWARD B. LEWIS, Professor of Biological Chemistry, Medical School, University of Michigan, -4nn Arbor, Michigan.