:,:]() 



Influence of Inanition on Metabolism. 



the last day of fast, while in experiment No. 74 the katabolism of protein was 

 4 grams larger than on the last day of experiment No. 73. The extremely 

 small amounts katabolized on the second and third days of experiment No. 

 7 I were 10 to 20 grams less than the lowest amount katabolized on any day 

 of experiment No. 73. Similarly, with experiment No. 76, the katabolism 

 on the first day was essentially that of the last day of the fast, but on the 

 second and third days with food the katabolism was greatly diminished. 



The tendency of the body to attain nitrogen equilibrium with such small 

 quantities of protein in the diet is of especial interest when compared to the 

 length of time required to attain a condition of equilibrium with excessive 

 quantities of nitrogen in the diet. 173 



Fat katabolized. The katabolism of fat in experiments with food following 

 fast is shown in table 253. 



Table 253. Fat katabolized per kilogram of body-weight in metabolism 



experiments with food. 



With regard to experiment No. 70, it is seen that large amounts were kata- 

 bolized on the second and third days, which may in part be accounted for by 

 the high pulse rate and febrile temperature observed at the end of this experi- 

 ment. The amount of fat broken down in experiment No. 72 was 15 grams 

 more than on the last day of experiment No. 71. In experiment No. 74 on 

 the other hand, the fat katabolism on the first day was 10 grams less than on 

 the last day of experiment No. 73, and throughout this experiment it was 

 unusually low. In experiment No. 76, it increased on the first day but 5 grams 

 over the last day of fasting and then continued small for the remaining two 

 days of the food experiment. On the whole, then, the katabolism of fat was 

 diminished on the ingestion of food after fasting. 



73 See discussion of gain of nitrogen during nitrogen metabolism experiment 

 No. 1, p. 541. 



