DIGESTIBILITY AND AVAILABILITY OF FOOD. 



219 



DETAILS OF DIGESTION EXPERIMENT NO. I98. 



This experiment, preliminary to metabolism experiment 

 No. 43, began with breakfast March 25, 1901, and continued 

 four days. The subject, J. C. W., weighed 79.2 kilos at the 

 end of the experiment. During the period he took a consider- 

 able amount of muscular exercise dail5\ The diet contained 

 an excess of fat. 



Table 119. 

 Digestion experiment No. ig8. 



* Composition taken from U. S. Dept. Agr. Office of Experiment Stations, Bui. No. 28. 



During this experiment the subject eliminated 3685. i grams 

 urine, containing 65.3 grams nitrogen. The average nitrogen 

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

 15.9 grams; outgo in urine, 16.3 grams, and in feces, 2.0 

 grams; implying a loss of 2.4 grams nitrogen, corresponding 

 to 15.0 grams protein. 



