REPORTS by McCollum and Grubb1 and Vignec and associates2 indicate the dependability of a completely supplemented evaporated milk (except for carbohydrate) as the sole source of food supply to provide all the vital food elements necessary for the normal growth and development of infants. In the present study, an estimation was made of the usefulness of a similar milk as the sole source of vitamin C in an otherwise customary diet of infants during the first year of life. The threefold purpose of this study of an evaporated milk fortified with vitamins and minerals (hereinafter referred to as special milk)3 was to determine (1) its effectiveness in maintaining a normal vitamin C level in the blood serum, (2) its influence on the frequency and character of the stools during the first three months of infancy and (3) its effectiveness in supporting normal growth and development. To this