534 



KAHN AND KOSENBLOOM 



Pecchini's and Conti's patient was a woman, 29 years of age, who 

 voided daily in her urine 0.19 to 0.25 gm. During' the day hours she 

 excreted 0.17 to 0.24 gm. and during the night hours 0.02 to 0.04 gm. 

 of cystin. 



Niemann found that the amount of sulphur excretion rises and sinks 

 with the amount of cystin. The daily amount excreted by his patient 

 was 1 gm. When the cystin was filtered off, the filtrate still showed a 

 marked sulphur reaction, showing, according to him, the presence of 

 soluble cystin. He calls attention to the fact that the presence of triple 

 phosphate does not exclude the possibility of the presence of cystin. 



The following figures were obtained by Mester for the sulphur parti- 

 tion in a cystinuric patient: 



Williams and Wolf conducted experiments upon a cystinuric patient, 

 male, age 29 years, weighing 129 pounds. In the urinary examination 

 cystin was determined upon a basis of the excess of neutral sulphur over 



