408 



Influence of Inanition on Metabolism. 



day of the fast of Cetti and on the seventh day of the fast of Flora Tosca. The 

 amount of phosphorus pentoxide eliminated per day is, in general, not far from 

 2.2 grams. 



The determinations of phosphorus in the Middletown experiments were made 

 by two methods, as is shown in the detailed tables; one by titration with 

 uranium salt, the other by fusion using the modified sodium peroxide method 

 of Dubois. 



Since the titrations were possibly less accurate than the gravimetric deter- 

 minations, the latter only are included in table 213. 



Table 213. Ratios of nitrogen to phosphorus (P 2 OJ and amounts of phosphorus* 

 excreted in urine in metabolism experiments without food. 



1 By fusion method. 



2 Does not Include possible amount in urine lost. 

 8 Omitting experiment No. 69. 



The total weight of phosphorus (expressed as P 2 5 ) excreted on the first day 

 of the different fasts varied from 0.736 gram, in experiment No. 71, to 2.407 

 grams in experiment No. 83, averaging for the first day 1.516 grams. Even 

 with the same subject (S. A. B.) in different experiments, the variations range 

 from 0.736 to 2.345 grams. On the first day of the fast, therefore, there was 

 apparently no uniformity in the excretion of phosphoric acid. 



