This first volume of Dr. Macy's study on "Nutrition and Chemical Growth in Childhood" reports the methods of study and the results of an investigation of 29 healthy children over a period of ten years. The second volume, yet to be published, will be one of interpretation. These children lived in groups of 9 to 12 in the Methodist Village in Michigan. It was thus possible to have thoroughly controlled feeding conditions and fairly similar environmental factors. A definite attempt was made both to satisfy the children in regard to appetite and to meet the requirements for metabolic studies with as little interference with their normal activities as possible.
Numerous studies of the physiologic and chemical aspects of digestion and excretion are presented. Energy metabolism is studied in relation to fat, carbohydrate and protein and to requirements for growth.
Balance studies on nitrogen, calcium, magnesium, sodium, potassium, sulfur, chlorine, phosphorus,