SALICYLIC ACID AND SALIC YLATES. 609 



ence of the salicylic acid tends to increase the digestion and the 

 absorption of the phosphoric acid from the intestinal canal and to 

 increase the quantit}^ of phosphoric acid excreted by the kidneys. 



No. 7. 



In the case of No. 7 the quantity of phosphoric acid ingested in the 

 food during the fore period averages daily 2.899 grams. Of this 

 quantity O.T71 gram appears in the feces and 1.703 grams in the urine, 

 corresponding to 26.60 and 58.74 per cent, respectively, of the total 

 phosphoric acid in the food. The balance is positive and amounts to 

 0.425 gram per day. During the preservative period the quantity of 

 phosphoric acid in the food is slightly increased, amounting to a daily 

 average of 2.962 grams. Of this quantity 0.636 gram appears in the 

 feces and 1.456 grams in the urine, corresponding to 21.48 and 49.14 

 per cent, respectively, of the total phosphoric acid in the food. The 

 phosphoric acid balance is thus phenomenally large, amounting to 0.87 

 gram per day. 



During the after period No. 7 consumed a smaller quantity of phos- 

 phoric acid than during either the preservative or fore period, namely, 

 2.763 grams per day. Of this quantity 0.966 gram appears in the feces 

 and 1.24 grams in the urine, corresponding to 34.95 and 44.87 per cent, 

 respectively, of the total quantity of phosphoric acid consumed. The 

 balance is again very large, though smaller than that of the preserva- 

 tive period, amounting to 0.557 gram pei 'day. Thus it is seen that 

 the quantity of phosphoric acid excreted in the feces greatly increased 

 in the after period and the quantity in the -urine showed a marked 

 decrease. 



In the case of No. 7 we again see a tendency on the part of the sali- 

 cylic acid to increase the digestion of phosphoric acid and its absorp- 

 tion from the intestinal canal. In this case, however, there is no 

 evidence of any increased katabolic activity, in fact the quantity of 

 phosphoric acid excreted in the urine is diminished. The balances are 

 larger than would be expected in a case of this kind, but careful revi- 

 sion of the data for No. 7 failed to reveal any cause of suspicion that 

 the excreta had not been properly collected and examined. 



No. '8. 



The quantity of phosphoric acid in the food of No. 8 amounts to 

 2.728 grams daily, of whicfi 0.972 gram appears in the feces and 1.756 

 grams in the urine, representing 35.63 and 64.36 per cent, respectively, 

 of the total quantity of the phosphoric acid in the food. The balance 

 is 0, as all except one one-hundredth of 1 per cent of the phosphoric 

 acid is accounted for. During the preservative period the quantity 

 of phosphoric acid is slightly increased, amounting to 2.962 grams 



