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June 22, 1912


JAMA. 1912;LVIII(25):1925-1927. doi:10.1001/jama.1912.04260060274003

By way of introduction I. wish to mention briefly a few already well-known facts. The Biedert theory, which dominated for many years American pediatric practice, held the proteid as the essential disturbing element in infantile digestion, and on the basis of this belief there was developed the long popular, although difficult and empirical, percentage system of feeding. The work of Czerny and Keller, attacking the problem of nutritional disorder from the standpoint of metabolism, demonstrated the comparative innocuousness of the proteid, and the importance of the rôle of the fats. Finkelstein and his school carried toward their logical conclusion the metabolism observations of Czerny and Keller and demonstrated the relationship of the carbohydrates, the salts and the whey medium itself to the physiology and pathology of the nutrition of infancy. Finkelstein also demonstrated the important principle that each individual infant has its own limit of nutritional tolerance, within which it

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