DIGESTIBII^ITY AND AVAILABILITY OF FOOD. 



229 



DETAILS OF DIGESTION EXPERIMENT NO. 304. 



This experiment was a part of metabolism experiment No. 

 50, which began with breakfast March 30, 1902, and continued 

 cue day. It was planned to be a work experiment with an 

 excess of fat in the form of butter in the diet, but as the digest- 

 ive apparatus of the subject became deranged only a portion of 

 the ration intended for the day was consumed. The weight of 

 the subject, J. C. W., in underclothes was 80.7 kilos at the 

 beginning and 79.8 kilos at the end. 



Table 129. 

 Digestion experiment N^o. 30^. 



During this experiment the subject eliminated 168 1.7 grams 

 urine, containing 13.5 grams nitrogen. The average nitrogen 

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

 II. I grams; outgo in urine and perspiration, 13.9 grams, and 

 in feces, 1.2 grams; implying a loss of 4.0 grams nitrogen, cor- 

 responding to 25.2 grams protein. 



