DIGESTIBIUTY AND AVAILABILITY OF FOOD. 



231 



DETAILS OF DIGESTION EXPERIMENT NO. 306. 



This experiment, a part of metabolism experiment No. 52, a 

 work experiment with an excess of fat in the diet, began with 

 breakfast April 21, 1902, and continued three days. The 

 weight of the subject, J. C. W., in underclothes was 79.8 kilos 

 at the beginning and 79.4 kilos at the end. 



Table 131. 

 Digestion experiment N'o. jo6. 



During this experiment the subject eliminated 5421.5 grams 

 urine, containing 48.0 grams nitrogen. The average nitrogen 

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

 17.7 grams; outgo in urine and perspiration, 16.4 grams, and 

 in feces, 1.6 grams; implying a loss of .3 gram nitrogen, corre- 

 sponding to 2.1 grams protein. 



