McNeil estimates that in 1941 the requirements in breast milk for babies during the first 6 mos. of life was about 161/2 million gals. and that a reasonable, or probably underestimate, indicates that 51/2 million gals. of essential ideal infant food was lost through unnecessary early weaning. When cow''s milk is scarce in war-time this is a colossal waste. He explains how many of the difficulties of breast-feeding which lead to early weaning can be avoided. Lactation control, mismanagement of the suckling and problems of digestion are concerned. There is need of more instruction of mothers to prevent early weaning and this great economic loss.