BOBIC ACID AND BOBAX. 149 



No. 5H. C. G. 



The percentage of water in the feces of No. 5 in the fore period is 

 72.01, in the preservative period, 70.64, and in the after period, 69.01. 

 The composition of the feces in this case is quite unique, the percent- 

 age of water being so far below that of any other subject connected 

 with the experiment. There is evidently a slight tendency under the 

 administration of the preservative to diminish the quantity of water 

 in the feces. The total solid matter in the feces in the fore period, 

 daily, is 26.9 grams, during the preservative period, 30.3 grams, 

 and during the after period, 31.7 grams. The percentage of nitrogen 

 in the food eliminated in the feces in the fore period is 7.5, in the 

 preservative period, 7.5, and in the after period, 8.4. Of the phos- 

 phoric acid in the food, 34.8 per cent appear in the feces in the fore 

 period, 41.2 in the preservative period, and 42.9 in the after period. 

 There appears to be a tendency on the part of the preservative in this 

 case to diminish the absorption of the phosphoric acid. Of the fat in 

 the food, 2.4 per cent appears in the feces in the fore period, 3.4 per 

 cent in the preservative period, and 4.1 per cent in the after period. 

 There is here an apparent tendency on the part of the preservative to 

 diminish the quantity of fat absorbed, and this tendency continues 

 during the after period! Of the total calories in the food, 3.2 per 

 cent appear in the feces in the fore period, 3.8 per cent in the preserv- 

 ative period, and 4.5 per cent in the after period. In this case, also, 

 there is a tendency during the preservative period to diminish the 

 quantity of the calorific elements of the food absorbed, and this ten- 

 dency is considerably increased during the after period. Of the total 

 heat value of the food, we find that it amounted to 3,861 calories per 

 day in the fore period, 3,500 in the preservative period, and 3,393 in 

 the after period. There appears to be a tendency here to a diminu- 

 tion in the amount of calories required under the administration of 

 the preservative, and this tendency is increased in the after period. 



No. 6B. J. T. 



No. 6 did not finish the preservative period. The data referring to 

 him are therefore not discussed here. 



SUMMARY. 



For the three subjects who completed the observations in Series V, 

 the following summary may be made: The average content of water 

 in the feces in the fore period is 77.41, for the preservative period 

 77.08, and for the after period 75.05. The total quantity of solid 

 matter in the feces in the fore period is 26.5, in the preservative period 

 30.1, in the after period 36.8. The total percentage of nitrogen in the 

 food eliminated in the feces in the fore period is 8.2, in the preserva- 

 tive period 8.2, and in the after period 9.5. Of the phosphoric acid 

 in the food the average quantity eliminated daily in the fore period is 



