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Because of the similarity of the clinical pictures and the blood changes in late rickets and in infantile rickets, it has been assumed that the metabolic disturbances are probably identical. The antirachitic treatment so readily successful in infantile rickets, however, seems much less efficient in some cases of late rickets. For this reason a detailed study of the mineral metabolism of such children seemed advisable. The present report is concerned with the mineral metabolism of two children, 12 and 13 years of age, respectively, who presented clinical roentgenologic and chemical evidence of active rickets, and of one child of 12 years who was used as a control. Both of the rachitic children showed definite roentgenologic evidence of healing during the period of study. SUMMARY OF CASES A summary of the histories follows: Case1.—The patient, C. K., a white girl, aged 12 years, was brought to the hospital because of

The institution of a milk-free diet is sometimes considered desirable for infants who exhibit an allergic response to milk protein. The use of soy bean flour in these diets has been advocated. The advantages of soy beans in infant feeding have been discussed by Tso 1 and by Hill and Stuart. 2 Soy bean flour is rich in protein, but the protein is of poorer quality than milk protein, and consequently must be fed at a higher level, from 20 to 22 per cent of the total calories. 3 The mineral content of soy bean flour differs considerably from that of milk. 2 Soy beans are rich in potassium and magnesium, but contain very little sodium, calcium and chloride. The percentage of phosphorus is not very different from the percentage of phosphorus in milk solids. In feeding soy bean preparations to infants, it is customary to add sodium chloride and

Clinical studies1have shown that infants fed evaporated milk grow rapidly and apparently are equal physically to infants fed fresh milk. It has been demonstrated, however, that the calcium of certain forms of heat-treated milk is less available to the human infant than is that of quickly boiled fresh milk.2Because of this it was deemed advisable to study the actual retentions of infants fed evaporated milk. For this purpose nine healthy male infants were studied for periods lasting from eighteen to forty-eight weeks. The evaporated milk used for the feedings was purchased in the open market, diluted with an equal quantity of 12 per cent corn syrup solution and acidified with lactic acid. This mixture was intended to be approximately equivalent to undiluted acidified fresh milk with the addition of 6 per cent corn syrup, which had been employed for similar observations on another group of infants