DIGESTIBILITY AND AVAILABILITY OF FOOD. 



197 



DETAILS OF DIGESTION EXPERIIMENT NO. 79. 



This experiment, representing the part of metabolism experi- 

 ment No. 14 within the respiration calorimeter, began with 

 breakfast December 20, 1898, and continued four days. The 

 weight of the subject in his underclothing at the beginning 

 was 63.6 kilos and at the end 62.6 kilos. The subject was as 

 quiet as practicable while in the calorimeter. 



Table 97. 

 Digestion experiment No. yp. 



During this experiment the subject eliminated 579S.0 grams 

 urine, containing 64.9 grams nitrogen. The average nitrogen 

 balance per day was therefore as follows: Income in food, 

 15. 1 grams; outgo in urine, 16.2 grams, and in feces, .9 gram; 

 implying a loss of 2.0 grams nitrogen, corresponding to 12.5 

 grams protein. 



14 



