SULPHUKOUS ACID AND SULPHITES. 959 



FAT BALANCE. 

 INDIVIDUAL DATA. 



The quantity of the fat ingested in the food which is converted into 

 heat and energy is determined by ascertaining the fat balances. The 

 amount of fat in the food of No. 1 varies but little in the three periods, 

 but is slightly less in both the preservative and after periods than in 

 the fore period. This accounts in part for the diminution of the fat in 

 the feces, which is seen to fall almost in the same quantity as the loss of 

 fat in the food. It appears, however, that a larger percentage of the 

 fat in the food appears in the feces in the fore period than in either 

 the preservative or the after period, and therefore the data indicate a 

 slightly increased absorption of fat. The balance is almost the same 

 in the fore period and preservative period, but is slightly less in the 

 after period. 



The data for No. 2 show a slightly larger amount of fat in the food in 

 the preservative period than in either the fore or after periods. There is 

 an increase in the amount of fat in the feces in the preservative 

 period, but as shown by the increased balance this is not as great as 

 the increase in the amount in the food. There is a considerable 

 increase in the amount of fat in the feces in the after period. 



The data for No. 3 show a slightly decreased digestion of the fat, as 

 judged by the larger amount occurring in the feces. The balance in 

 the preservative period, however, is largely increased, owing to the 

 unusual increase in the amount ingested. 



In the case of No. 4 the fat appears to be more thoroughly utilized 

 in the preservative period and the after period than in the fore 

 period, showing an increased consumption for heat and energy in 

 those two periods. 



The data for No. 5 are not complete and by reason of the large 

 variation in the quantity of fat consumed in the food in the three 

 periods are not comparable. 



The data for No. 6 are complete and show almost no variation in 

 the quantity of fat consumed in the food in the three periods. There 

 appears to be a slight retardation of the- digestive process indicated by 

 the very slightly increased quantity of fat in the feces during the 

 preservative and after periods. The balances remain almost constant, 

 showing only the variations in harmony with the preceding statement. 



On account of the incomp4eteness of the data for No. 7 the same are 

 of limited value. There appears to be very little change in respect of 

 the digestion of the fat in the fore and preservative periods. There 

 is a slightly larger amount of fat in the food of the fore period and a 

 corresponding increase in the quantity of fat in the feces as compared 

 with the same data in the preservative period. 



