In our article we referred to the publications of Barness et al. and Omans et al. in three areas dealing with weight gain and with the effect of diets on serum protein levels. Barness et al. in the American Journal of Diseases of Children (94:480, 1957) state: "Rate of weight gain was slightly more rapid in infants fed the higher protein formula." Again, Omans et al. in the Journal of Pediatrics (59:955, 1961), state: "In the present study the babies who were fed less than 2.5 gm/kg/day gained poorly, while those who were fed 3 to 8 gm/ kg/day gained equally well."These conclusions would lead one to believe that infants gain better on diets higher in protein.