I. Introduction. II. General. III. Nutritional value as estimated in laboratory and field experiments. A. Raw milt (and butter in the cases of vitamins A and D). (o) General. (6) Vitamins. (i) General. (ii) Vitamin A and carotene. (iii) The vitamin B complex. (iv) Vitamin C. (v) Vitamin D. (c) Other factors. (i) Lactose. (ii) Soft curd milk. (iii) Minerals. (iv) Milk proteins. (v) Milk fat. B. Treated milk. (a) Heated milk. (i) General, (ii) Vitamins. (6) Irradiated and vitaminized milk. C. Milk products. (a) Cheese and whey. (6) Dried and evaporated milk. IV. Nutritional value of milk for human beings. A. General. (a) Introduction. (b) Nutritional surveys. (c) General effects. B. Milk components. (a) Vitamins. (b) Proteins. (c) Minerals. C. Effect of treatment. (a) Effect of heating and processing. (b) Irradiated and vitaminized milk. (c) Soft curd milk.