DIGESTIBILITY AND AVAILABILITY OF FOOD. 



187 



DETAILS OF DIGESTION EXPERIMENT NO. 40. 



This experiment, the part of metabohsm experiment No. 6 

 spent in the respiration chamber, began with breakfast May 

 18, 1897, and continued four daj's. The subject, E. O., weighed 

 without clothes, 66.2 kilos at the beginning and 66.7 kilos at 

 the end. During the experiment he worked eight hours each 

 day on a stationary bicycle arranged as an ergometer. The 

 diet was practically the same as in experiment No. 39. 



Table 87. 

 Digestion experiment No. /o. 



During the experiment the subject eliminated 4797.8 grams 

 urine, containing 65.1 grams nitrogen. The average nitrogen 

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

 19. 1 grams; outgo in urine and perspiration, 16.5 grams, and 

 in feces, 1.5 grams; implying a gain of i.i grams nitrogen, 

 corresponding to 6.9 grams protein. 



