33 



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

 April 9, 1902. 



Table 18. — Results of digestion experiment No. 309. 



During this experiment the subject eliminated 6,023 grams urine, 

 containing 60.25 grams nitrogen. The nitrogen balance per day was 

 therefore as follows: Income in food, 31.20 grams; outgo in urine, 

 22.08 grams, and in feces, 1.25 grams, implying a gain of 7.87 grams 

 nitrogen, corresponding to 1:9.2 gramy protein. 



DIGESTION EXPERIMENT NO. 310. 



Kh)d of food. — Milk, and bread made from straight-grade flour. 



Suhject. — Man No. 2; age, 25 years; university student; employed 

 at average farm labor four hours per day. " 



^Ve/</^d. — At the beginning and close of the experiment, 163.75 

 pounds. 



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

 April 9, 1902. 



Table 19. — Results of digestion experiment Xo, 310. 



19017— No. 126—03- 



