35 



During this experiment the subject eliminated 4,486 grams urine, 

 containing 58.77 grams nitrogen. The nitrogen lialance per day was 

 therefore as follows: Income in food 24 grams; outgo in urine 19.59 

 grams, and in feces 223 grams, implying a gain of 2.18 grams nitrogen, 

 corresponding to 13.6 grams protein. 



DIGESTION EXPERIMENT NO. 312. 



Kind of food. — Milk, and bread made from finely ground graham 

 or entire-wheat flour. 



Subject. — Man No. 1, as in experiment No. 309. 



Weight. — At the beginning of the experiment 163.75 pounds; at the 

 close 164 pounds. 



Duration. — Three days with nine meals, beginning with breakfast 

 Api-il 14, 1902. 



Table 21. — Results of digestion e.vperiment No. 312. 



n Calculated according to the assumption that 90 per cent of the fat in the bread is digestible. 



During this experiment the subject eliminated 5,201.7 grams urine, 

 containing 68.23 grams nitrogen. The total nitrogen balance per day 

 was therefore as follows: Income ii. food, 32.34 grams; outgo in urine, 

 22.74 grams, and in feces, 1.95 grams, impl^'ing a gain of 7.65 grams 

 nitrogen, corresponding to 47.8 grams protein. 



DIGESTION EXPERIMENT NO. 313. 



Kind of food. — Milk, and bread made from finely ground graham 

 or entire-wheat flour. 



Subject. — Man No. 2, as in experiment No. 310. 



Weight. — At the beginning of the experiment, 164.5 pounds; at the 

 close, 164.75 pounds. 



