DIGESTIBILITY AND AVAILABILITY OF FOOD. 



227 



DETAILS OF DIGESTION EXPERIMENT NO. 302. 



This experiment, which was preHminary to metabolism ex- 

 periment No. 49, began with breakfast March 23, 1902, and 

 continued four da5's. During the experiment the subject per- 

 formed a regular amount of muscular work every da3^ The 

 weight of the subject, J. C. W., in underclothes was 80.4 kilos 

 at the end of the experiment. 



Table 127. 

 Digestion experiment No. 302. 



During this experiment the subject eliminated 4603.3 grams 

 urine, containing 63.9 grams nitrogen. The average nitrogen 

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

 17.6 grams; outgo in urine, 16.0 grams, and in feces, 2.5 

 grams; implying a loss of .9 gram nitrogen, corresponding to 

 5.6 grams protein. 



