734 INFLUENCE OF FOOD PKESERVATIVES ON HEALTH. 



,. No. 11. 



In the case of No. 11 there was a marked increase in the volume of 

 urine during the preservative period, rising from 748 cc daily in the 

 fore period to~943 in the preservative period, and falling slightly, 

 namely, to 913, in the after period. The total solids excreted in the 

 urine rise from 44.2 grams in the fore period to 52.9 grams in the 

 preservative period and fall to 50.3 grams in the after period. The 

 total nitrogen in the urine rose from 10.74 grams in the fore period to 

 12.34 grams in the preservative period, falling only slightly in the 

 after period, namely, to 12.23 grams. There was a corresponding 

 increase in the urea nitrogen, rising from 9.77 grams in the fore period 

 to 11.08 grams in the preservative period and rising still higher, 

 namely, to 11.31 grams, in the after period. There was no increase 

 in the uric acid excretion during the preservative period, but a slight 

 increase is shown in the after period. There was a slight increase in 

 the kreatinin during the preservative period and a decrease in the 

 ammonia. 



There was an average daily excretion of 20. 9 grams of urea in the fore 

 period, 23.71 grams in the preservative period, rising to 24. 20 grams in 

 the after period. There was no increase in the excretion of uric acid 

 in the preservative period, but an increase is shown in the after period. 

 There was a marked increase in the excretion of kreatinin during the 

 preservative period. Seventy per cent of the total nitrogen in the 

 food was excreted in the urine in the fore period, 80.4 per cent in the 

 preservative period, and 79.7 per cent in the after period. 



In the total percentage of nitrogen excreted as urea there was a 

 decrease in the preservative period, and an increase in the after period 

 exceeding the amount excreted in the fore period. There was mark- 

 edly less uric acid excreted in the preservative period, but an increase 

 in the after period. No appreciable influence was exerted by the 

 salicylate of soda upon the percentage of nitrogen excreted as kreati- 

 nin, but less was excreted as ammonia. 



In general it may be said in the case of No. 11 that the exhibition 

 of the salicylate of soda has an apparent tendency to increase the me- 

 tabolism of nitrogen. It produces no increase in the amount of uric 

 acid eliminated in the preservative period and has very little effect 

 upon the form in which the nitrogen was excreted. 



No. 12. 



In the case of No. 12 the volume of urine during the preservative 

 period was slightly increased, falling again in the after period to a 

 little below the normal for the fore period. The quantity of total 

 solids excreted in the urine was also slightly increased in the preser- 

 vative period and fell considerably below the normal of the fore period 



