SALICYLIC ACID AND SALIC YLATES. 627 



part of the sulphur which enters the body in the food is organic, and 

 the greater part which is excreted with the feces is inorganic. The 

 data discussed below are to be found in Table XVII, page 633. 



INDIVIDUAL DATA. 



No. 1. 



The quantity^ of sulphur in the food of No. 1 is almost the same 

 during the three periods. The daily amount is 0.904 gram in the fore 

 period, 0.952 gram in the preservative period, and 0.933 gram in the 

 after period. Of this quantity 0.083 gram appears in the feces in the 

 fore period, 0.077 gram in the preservative period, and 0.111 gram in 

 the after period. In the urine is found 0.825 gram in the fore period, 

 0.907 gram in the preservative period, and 0.935 gram in the after 

 period. Expressed as percentages it is found that of the total sulphur 

 exhibited in the food 9.23 per cent appears in the feces in the fore 

 period, 8.12 per cent in the preservative period, and 11.88 per cent in 

 the after period, while in the urine 91.33 per cent appears in the fore 

 period, 95.27 per cent in the preservative period, and 100.20 per cent 

 in the after period. The balance is negative in all cases, amounting 

 to only 0.005 gram in the fore period, rising to 0.032 gram in the 

 preservative period, and amounting to the comparatively very large 

 quantity of 0.113 gram in the after period. In this case it is seen that 

 there is a marked tendency in the case of No. 1 while unc er observa- 

 tion to excrete a larger quantity of sulphur than he is eating in his 

 food. During the fore period this excess is extremely minute, but it 

 is increased in the preservative and after periods. The principal excess 

 of excretion is found in the urine both in the preservative and after 

 periods that is, the general effect of the preservative appears to be 

 to increase the excretion of metabolized sulphur, and this is done 

 even at the expense of the tissues of the body during the preservative 

 period and to a greater extent in the after period. 



The quantities of sulphur administered in the food of No. 2 for the 

 three periods are 1.047 grams, 1.079 grams, and 1.054 grams, respec- 

 tively. Of this quantity 0.153 gram, 0.147 gram, and 0.131 gram 

 appears in the feces, respectively; and 1.009 grams, 0.985 gram, and 

 1.039 grams appear in th^ urine, respectively. Based upon the per- 

 centages of sulphur in the food it is seen that 14.65 per cent, 13.65 

 per cent, and 12.40 per cent, respectively, are excreted in the feces 

 during the three periods, while in the urine 96.38 per cent, 91.28 per 

 cent, and 98.55 per cent are excreted, respectively, in the three 

 periods. The balance in all cases is strongly negative but its magni- 

 tude during the preservative period is less than half of that of the 



