142 INFLUENCE OF FOOD PRESERVATIVES ON HEALTH. 



tive period, the amount being 34.5 per cent as against 22.4 per cent 

 in the fore period, and 31.5 per cent in the after period In the case of 

 No. 8 there is almost a complete digestion and absorption of the fat, 

 only 1.7 per cent of the fat in the food appearing in the feces in the 

 fore period, 3.1 per cent as the average of the preservative period, and 

 3 per cent in the after period. The calorific elements of the food are 

 also very completely absorbed in the case of No. 8, 2. 1 per cent of the 

 total calories of the food appearing in the feces in the fore period, 3.7 

 per cent as a mean of the preservative period, and 3.8 per cent in the 

 after period. In this case also, as in the preceding one, there appears 

 to be a tendency on the part of the preservative to interfere with the 

 absorption of the valuable elements of the food during its passage 

 through the alimentary canal. 



No. 9 A. O. 



With this subject we see a decided tendency to constipation, which 

 causes a large variation in the amount of feces eliminated, which 

 decreases through the preservative and after periods. There is little 

 change in the percentage of nitrogen eliminated in the feces, in the 

 fore period it being 7.6, the mean percentage for the preservative 

 period 7.1, and for the after period 6.9. The percentage of phos- 

 phoric acid in the food eliminated in the feces during the fore period 

 is 35.7, the mean of the preservative period 36.2, and of the after 

 period 32.2. In the case of the fat it is seen that 4.3 per cent of the 

 total amount in the food is eliminated in the feces during the fore 

 period, 4.1 per cent as a mean of the preservative period, and 4.7 per 

 cent in the after period. Of the calories in the food, 4.1 per cent are 

 eliminated in the feces during the fore period, 3.6 per cent as a mean 

 of the preservative period, and 3.7 per cent in the after period. 



These data seem to indicate a tendency on the part of the preserva- 

 tive to increase the absorption of the elements of the food, with the 

 exception of the phosphoric acid, during its transit through the ali- 

 mentary canal. 



No. 10 W. J. J. 



In the case of this man the marked increase in the quantity of feces 

 voided in the preservative period is due to two very large quantities 

 discharged on the 29th and 31st of March. In the after period there 

 is a marked decrease in the quantity voided. There is also noted a 

 dry condition of the feces, and no tendency is noticed on the part of 

 the preservative to increase the quantity of water therein. The per- 

 centage of nitrogen in the food eliminated in the feces in the fore 

 period in this case is 8.8, the mean of the three preservative subperiods 

 9.6, and in the after period 7.8. The percentage of phosphoric acid 

 in the food which is eliminated in the feces during the fore period is 



