The purpose of this paper is to point out the facts that infants fed on ordinary commercial unsweetened evaporated milk as a substitute for breast milk grow satisfactorily in every respect when no sugar or other carbohydrate is added to the daily formula, provided the milk is used in amounts sufficient to satisfy total caloric needs. Breast feeding should be given if it is possible, since an infant thrives best when fed breast milk. Both morbidity and mortality are lower in breast-fed babies,1 and every other evidence of growth, nutrition and development indicates the advantages of breast feeding. But it is also true that there are exceptional instances in which breast-fed babies may be inadequately nourished and such conditions as tetany, anemia and, more often, general but less specific malnutrition may occur. These conditions are related more often to the physical health of the nursing mother and to her