A COMPARISON OF MILK FROM THE TWO BREASTS

In a recent review of the nutritive aspects of human milk, Macy¹ of the Research Laboratory of the Children's Fund of Michigan emphasizes the fact that at times not only do the most carefully prepared scientific formulas fail to satisfy the nutritive needs of a particular infant but even mother's milk may fail. Therefore, renewed interest has been focused on mother's milk and it is being subjected to careful chemical and biologic investigation in respect to its adequacy in all known details and the possibility of its improvement through maternal care. Macy points out the difficulties of defining a standard composition of breast milk because milk secreted by different women has been shown to vary in composition between wide limits. Furthermore, it has been demonstrated that the following conditions may be effective in altering the quality and quantity of milk secreted: the size and anatomic structure of the mammary