630 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



after period. The general effect of the administration of the pre- 

 servative appears to be a decrease in the excretion of both non- 

 metabolized and metabolized sulphur in the preservative period. In 

 the after period the quantity of nonmetabolized sulphur is consid- 

 erably increased, while the quantity of metabolized sulphur excreted, 

 is again very decidedly diminished. 



No. 8. 



The quantities of sulphur contained in the food of No. 8 during the 

 three periods are 0.821 gram, 0.882 gram, and 0.879 gram, respect- 

 ively. Of this quantity there appear in the feces 0.111, 0.130, and 

 0.145 gram, respectively, for the three periods, and in the urine 

 0.768, 0.741, and 0.838 gram, respectively. Expressed in percentages, 

 of the total sulphur in the food there appear in the feces 13.56, 14.79, 

 and 16.52 per cent, respectively, for the three periods, and in the 

 urine 93.53, 83.99, and 95.27 per cent, respectively, for the three 

 periods. The balance is negative in the fore period, slightly positive 

 in the preservative period, and strongly negative in the after period. 

 The general effect of the preservative appears to have been to slightly 

 increase the percentage of the nonmetabolized sulphur excreted in the 

 feces in the preservative period and to decidedly increase it in the 

 after period, and to greatly diminish the quantity of metabolized 

 sulphur excreted during the preservative period, while a very marked 

 increase occurs in the after period. 



No. 9. 



The sulphur daily consumed in the food by No. 9 for the three 

 periods was 1.097, 1.204, and 1.154 grams, respectively. Of this 

 there appear in the feces 0.079, 0.119, and 0.089 grams, respectively, 

 and in the urine 0.922, 0.927, and 0.892 grams, respectively, for the 

 three periods. Expressed in percentages, of the total amount of sul- 

 phur in the food there appear for the three periods in the feces 7.23, 

 9.92, and 7.71 per cent, respectively, and in the urine 84.04, 76.98, 

 and 77.34 per cent, respectively. 



The balance is positive in all cases. Its magnitude is considerably 

 increased during the preservative period and still further increased 

 during the after period. This increase of balance, however, is not 

 sufficient to compensate for the increase in the amount of sulphur in 

 the food. 



The amount of nonmetabolized sulphur excreted appears to be con- 

 siderably increased during the preservative period, but returns during 

 the after period to approximately the same amount as in the fore period. 

 The amount of metabolized sulphur excreted during the preservative 

 period is almost the same as that of the fore period, but the percentage 

 amount is greatly decreased. 



