SALICYLIC ACID AND SALICYLATES. 607 



phosphoric acid in the food for the second subperiod is 3.834 grams, 

 of which 0.906 gram appears in the feces and 1.993 grams in the urine, 

 equivalent to 23.62 per cent in the feces and 51.99 per cent in the 

 urine. The balance is again strongly positive, amounting to 0.935 

 gram daily. 



These large balances are explained by reason of the fact that No. 3 

 commenced the observations after a period of illness and constantly 

 gained weight during the progress of the experiment. The phosphoric 

 acid therefore was doubtless utilized to some extent in building the 

 growing tissues. The after period was again interrupted by sickness 

 due to a severe cold. 



No. 4. 



The quantity of phosphoric acid exhibited in the food of No. 4 dur- 

 ing the fore period is 4.133 grams daily, of which 1.068 grams appear 

 in the feces and 2. 729 grams in the urine; 25.84 per cent of the total 

 phosphoric acid ingested in the food appears in the feces and 66.03 per 

 cent in the urine. The balance is positive, and its daily magnitude is 

 0.336 gram. During the preservative period the quantity of phos- 

 phoric acid in the food is greater, namely, 4.285 grams per day, of 

 which 1.079 grams appeared in the feces and 2.83 grams in the urine, 

 equivalent to 25.17 and 66.03 per cent, respectively. The balance is 

 positive and amounts to 0.377 gram per day. In the after period No. 4 

 consumed in his food 4.202 grams of phosphoric acid daily, of which 

 1.07 grams appeared in the feces and 2.7 grams in the urine, equiva- 

 lent to 25.47 and 64.25 per cent, respectively. The balance is again 

 positive and is slightly greater than in the two previous periods, 

 namely, 0.432 gram per day. 



An inspection of these data shows that the exhibition of the pre- 

 servative had scarcely any influence upon the excretions of phosphoric 

 acid. What influence was exerted was of an inhibitory character, the 

 quantity of phosphoric acid excreted being slightly less in the pre- 

 servative period than in the fore period, which tendency became 

 somewhat more marked during the after period. 



No. 5. 



The summary of the data for No. 5 shows that during the preserva- 

 tive period the quantity of phosphoric acid ingested in the food daily 

 is 4.177 grams. Of this quantity there appeared in the feces 1.433 

 grams and in the urine 2.479 grams, equivalent to 34.30 and 59.34 per 

 cent, respectively. The balance is positive, and its daily average mag- 

 nitude is 0.266 gram. During the preservative period the quantity of 

 phosphoric acid consumed in the food is slightly greater than in the 

 fore period, averaging 4.326 grams daily. Of this quantity 1.216 

 grams appear in the feces and 2.623 grams in the urine, equivalent to 



