318 



THE VITAMINES 



of calcium in the food could not be confirmed in general, the lesser 

 utilization of calcium in rachitic children has become a fact which 

 has gained support from the numerous reports of Schabad (1084) 

 and others. Schabad (1085) also studied the phosphorus metabolism 

 in various stages of rickets and convalescence. The children investi- 

 gated were of different ages, both breast and cow's milk being used ; 

 normal children were studied as controls. The following figures 

 were obtained: 



Very recently, an important series of metabolism experiments in 

 rickets was reported by Schloss (1085a) and also by Freise and 

 Rupprecht (1085b). 



According to Flamini (1086) the urinary CaO excretion in normal 

 children is 0.125 gram per day; in rickets, 0.05 gram on an intake of 

 3.4 grams per day. Peiser (1087) found the calcium balance negative. 

 The nitrogen and sulphur metabolism was studied in rachitic dwarfs 

 by Schwarz (1088), and the mineral metabolism in late rickets, by 



