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Scientific Proceedings (34). 



hydrate other than pentose could be detected. The pentose con- 

 tent ranged between o. i and 0.5 per cent. In all of these fifteen 

 urines containing pentose acetone was found in appreciable quantity. 

 Acetone was detected by treating the distillate with sodium nitro- 

 prusside and ammonia. 



Five of these fifteen cases showed a positive tuberculin reaction 

 (subcutaneous injection of the bacillen emulsion), three gave a 

 history of chronic alcoholism but claimed to have been abstaining 

 for a considerable time, three were suffering from some obscure 

 intestinal disturbances, and in regard to the remaining four cases 

 little can be said at the present writing. 



The points of interest to me are (i) apparent frequency of pen- 

 tosuria, (2) positive tuberculin reaction in one third of my cases of 

 pentosuria, (3) presence of acetone in every pentose-containing 

 urine examined. 



