In the review of volume I The Journal stated in anticipation that the forthcoming volume II would contain the cream of this project. This anticipation has been realized a hundredfold. Unfortunately it is practically impossible to do justice in a short review. The introduction contains tables of data on the analysis of foods. Then follow nearly a thousand pages of data on 33 individual children the nature and scope of which may be best presented by reviewing the record of Frank, covering eightyeight pages and comprising family, medical, psychologic and endocrinologic history; then follow in order tables of measurements and weights over seven years, anthropometric data, detailed blood studies, basal metabolism measurements, measurements of wrist bones, skeletal maturation, food intake, podometer data, detailed food balance data, saliva cultures for caries activity and urine acidity. Interspersed among these tables are fifty-seven roentgenograms of skeletal studies at different ages, nine barium meal