If the science of nutrition is to fulfil its destiny of service to man, the vast collection of fundamental data on experimental animals must be adapted to the needs of man without delay. Even before the Nutrition Conference in 1941, evidence with respect to dietary deficiencies in the nation had been secured. This information was amplified in quantity and implication1 in 1943. Reliable data must be secured on human requirements for the various dietary essentials. The recommendations made by the Food and Nutrition Board of the National Research Council in 1941 have served as a useful guide in this respect. In the interim active investigation, particularly in the field of the vitamins, has continued in an effort to obtain more adequate criteria for detecting early deficiency states in man and also to improve the analytical methods involved.
Two summaries dealing with the human requirement for the antineuritic vitamin—thiamine, or