RICKETS 317 



Gassmann (1072) found the following: 



In addition, 5 per cent of organic matter was found in rachitic 

 bones. Similar analytical results were obtained by Schabad (1073). 

 Simonini (1074) saw a relationship between the calcium content of 

 the bones and the teeth. Rost (1075) found the water content of 

 rachitic bones higher than in the normal; the ash content of the 

 ribs and the vertebrae, on the contrary, was 20 to 69 per cent lower. 

 Aschenheim and Kaumheimer (1076) found the calcium content of 

 the muscles diminished in severe cases. The calcium content of 

 the blood was found to vary by Aschenheim (1077). Denis and 

 Talbot (1077a) observed a low calcium content in the serum. How- 

 land and Kramer (1077b) frequently found the calcium content 

 of the blood normal, while the phosphorus content was always low. 

 The sugar content of the cerebrospinal fluid was found diminished 

 by Suzuki (I.e. 894). 



METABOLISM 



In rickets, according to Dibbelt (1078), the elimination of salts in 

 the feces is increased, but decreased in the urine, and sometimes 

 entirely absent. If a cure is brought about, there is first a hyper- 

 retention of calcium salts with simultaneous increased elimination in 

 the urine. Since, in his time, the etiology was associated with the 

 amount of calcium in the food, Denton (1079) tried to determine the 

 calcium requirement in children. Aron (1080) tried to prove that 

 milk, especially mother's milk, contains just sufficient calcium to 

 cover the minimal needs. % The analyses of mother's milk made by 

 Schabad (1081) were for the same purpose. Orgler (1082) disputed 

 the results of Aron, and attributed them to a faulty calculation of the 

 calcium requirement. Cronheim and Erich Mliller (1083) compared 

 the mineral metabolism of normal and rachitic children, and found 

 no marked variations. In Aron's cases, the characteristic metabolic 

 disturbance had perhaps passed. While the assumption of the lack 



