668 INFLUENCE OF FOOD PKESEEVATIVES ON HEALTH. 



SUMMARY. 



In the following table are given the averages by periods for the nine 

 men satisfactorily completing the series: 



TABLE XX. Calories summary, by periods, for nine men, Series VI. 



There is seen to be an average increase in the calories of the food of 

 the preservative period of 31, and in the after period of 30 over the 

 quantit} 7 in the fore period. Although the number of calories in the 

 food was smallest in the fore period, the number excreted in the feces 

 is the largest, amounting to 10-i calories daily. The calories excreted 

 in the preservative period in the feces is 92 daily, and in the after 

 period 95. 



These data show the marked tendency on the part of the preserva- 

 tive to diminish the calories in the feces; in other words, to increase 

 the combustion of the heat-forming constituents of the food during the 

 period of the administration of the preservative. This effect con- 

 tinues to some extent in the after period, although there is a marked 

 tendency shown to return to the condition of the fore period. 



The actual quantity of calories in the urine is almost the same for 

 the three periods. When, however, it is remembered that there is a 

 smaller number of calories in the food during the fore period, it is 

 evident that there is very slight tendency on the part of the preserva- 

 tive to decrease the excretion of calories in the urine. This decrease, 

 however, is very slight, and there is a slight increase in the after 

 period. The largest percentage of calories appears in the feces in the 

 fore period and the smallest in the preservative period. The per- 

 centage occurring in the urine is almost the same for all the periods, 

 but there is a slightly larger percentage found in the urine of the fore 

 period. 



These data show a tendency to increase the combustion of the food 

 in the metabolic process, showing a total greater heat consumption 

 induced by the administration of the preservative. The balances only 

 corroborate in a different form of expression the conclusions already 

 drawn. 



