960 . INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



In the case of No. 8 no tendency in the preservative period to 

 modify the metabolism of the fat is shown, the variation in the 

 amount ingested and the variation in the balance being practically 

 compensatory. The amount in the feces is only very slightly greater 

 in the fore period than in the preservative period, but in the after 

 period there is a notable increase in the quantity of the fat in the 

 feces, while the quantity of fat ingested has decreased. The tendency 

 in this case seems to be to produce practically no effect during the 

 administration of the preservative, but to inhibit the absorption of 

 the fat during the after period. 



No. 9 is notable by reason of the large quantity of fat consumed. 

 In this case there is an increase in the quantity of fat in the feces 

 during the preservative period, and this increase is continued and 

 augmented in the after period. It is evident that there is a tendency 

 on the part of the preservative to inhibit the absorption and com- 

 bustion of the fat. This is shown also by the percentage data. 



The same conditions which have just been described in the case of 

 No. 9 occur again in No. 10. In the after period the amount of fat 

 in the feces increases. These data, taken in conjunction with those 

 of the percentage elimination, show a slight tendency on the part of 

 the preservative to inhibit the combustion of fat and also show that 

 this tendency is continued in a very marked degree in the after period. 



The data in the case of No. 11 also show a slight increase in the 

 percentage of fat in the feces during the preservative period, with a 

 recovery in the after period. These data, taken* in connection with 

 the considerable increase in the amount of fat in the food and the 

 slight increase in the balance, show a tendency to inhibit the absorp- 

 tion of fat. 



Very little change is noticed in the metabolism of the fat in the 

 case of No. 12. There is a slight increase in the amount of fat in the 

 feces in the after period, and this is shown also in the magnitude of 

 the percentage eliminated and by the balances. 



SUMMARIES. 



A comparison of the summaries of Nos. 1 to 6 and Nos. 8 to 11, 

 inclusive, shows the general effect upon the fat metabolism of the 

 administration of sulphur. The total amount of fat in the food of 

 Nos. 1 to 6 daily is 102.27 grams in the fore period, 103.67 grams in 

 the preservative period, and 97.09 grams in the after period. There 

 remain in the feces in the fore period 3.83 grams, in the preservative 

 period 3.92 grams, and in the after period 3.52 grams. Apparently 

 there is a slight tendency on the part of the preservative to inhibit 

 the absorption of the fat from the alimentary canal, but this is too 

 slight to warrant any conclusion. There does not seem, therefore, 

 to be any notable effect produced upon the metabolism of the fat by 

 the administration of sulphites. 



