22 



During this experiment the subject eliminated 5,608 grams urine, 

 containing 88.42 grams nitrogen. The average nitrogen balance per 

 da}^ was therefore as follows: Income in food, 27.47 grams; outgo in 

 urine, 22.10 grams and in feces, 2.59 grams, implying a gain of 2.78 

 grams nitrogen, corresponding to 17.4 grams protein. 



DIGESTION EXPERIMENT NO. 243. 



Kind of food. — Milk, and bread made from entire-wheat flour. 



Subject. — University student No. 2, 22 years old, employed about 

 four hours per day at manual labor. 



Weight. — At the beginning of the experiment, 156 pounds; at the 

 close, 155 pounds. 



Duration. —Four days, with twelve meals, beginning with breakfast 

 April 17, 1901. 



Table 7. — Results of digestion experiment No. 243. 



a Estimated on the assumption that 90 per cent of the fat in the bread is digestible. 



During this experiment the subject eliminated 8,463 grams urine, 

 containing 80.95 grams nitrogen. The average nitrogen balance per 

 day was therefore as follows: Income in food, 28.68 grams; outgo in 

 urine, 20.24 grams, and in feces, 2.09 grams, implying a gain of 6.35 

 grams nitrogen, corresponding to 89.7 grams protein. 



