664 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



INDIVIDUAL DATA. 



No. 1. 



The average daily number of calories in the food of No. 1 for the 

 fore period is 2,442, for the preservative period 2,453, and for the 

 after period 2,454. The data show a very close agreement in the 

 daily quantity of heat-forming material ingested with the food. The 

 residual calories in the feces for the fore period are 62, for the pre- 

 servative period 60, and for the after period 96. The residual calo- 

 ries in the urine for the fore period are 72, for the preservative 

 period 79, and for the after period 79. Expressed in percentages, 

 the calories in the fore period in the feces are 2.55 per cent, in the 

 preservative period 2.43 per cent, and in the after period 3.92 per 

 cent; in the urine, 2.95 per cent, 3.21 per cent, and 3.23 per cent, 

 respective!} 7 . The balance for the fore period is 2,308, for the pre- 

 servative period 2,315, and for the after period 2,279. These figures 

 represent the actual quantity of heat furnished by the food during the 

 progress of the experiment. The data show a slight tendency on the 

 part of the preservative to decrease the calories in the feces. On the 

 withdrawal of the preservative, however, the calories in the feces 

 increase in a very marked degree. There was but little change in the 

 calories occurring in the urine, there being a slight increase during 

 the preservative period, which was maintained without change in the 

 after period. The most notable fact in connection with the data is 

 the increase in the calories in the feces upon the withdrawal of the 

 preservative. 



No. 2. 



The average number of calories in the food of No. 2 for the three 

 periods is 3,015, 3,008, and 3,011, respectively, showing a very close 

 agreement in the heat value for the three periods. There appear in 

 the feces for the fore period 137 calories daily, in the preservative 

 period 114, and in the after period 106. There appear in the urine in 

 the fore period 89 calories, in the preservative period 85 calories, and 

 in the after period 89 calories. The largest percentage of calories 

 appears in the feces in the fore period and the smallest in the after 

 period. The largest percentage of calories in the urine is in the after 

 period, but it is almost identical with the percentage of the fore period. 

 There is a slight diminution in the percentage of calories in the urine 

 during the preservative period. The largest balance, namely, 2,816, 

 occurs in the after period and the smallest in the fore period. The 

 most noted change indicated by the data is in the diminution of the 

 calories in the feces upon the addition of the preservative, and this 

 diminution is continued, but to a less extent, in the after period. 



