The subject of feeding infants under 1 year of age artificially has occupied some of the brightest and best minds of the profession. Among these authorities it has been clearly established that the best substitute for human milk is cow's milk so modified that it shall resemble the former in its essential chemical, physical and biologic characteristics and that these shall be adapted to the individual infant.
While it is true, and must be considered clinically, that the most accurate quantitative modification of bovine milk can not transform it into human milk, pediatrists are agreed that the best results are obtained by the so-called fractional or percentage method of feeding, however they may differ as to the best method of modification. Percentage feeding, not unlike most valuable medical facts, is a product of evolution and of many minds. It follows, therefore, that its history contains much that is indispensable and