298 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



considerably increased. The body-temperature approximated 36.7 C. ; 

 the pulse rate averaged 65 and the respiration rate 19. The ingestion 

 of the 15 grams of nitrogen in this diet thus resulted in a pronounced 

 increase in the metabolism, which continued for at least 8 hours. 



H. C. K., May 15, 1906. Plasmon graham biscuit was substituted 

 for the milk biscuit used in the previous experiment, the amounts being 

 100 grams plasmon, 47 grams plasmon graham biscuit, and 439 grams 

 skim milk. The total nitrogen intake was practically the same as 

 in the first experiment, i. e., 15.25 grams, with 11.92 grams from the 

 plasmon, 1.07 grams from the biscuit, and 2.26 grams from the skim 

 milk. The experiment was lengthened to 12 hours in order to obtain 

 the total effect of the food. The results of the experiment are given 

 in table 229, which shows that the increment in carbon-dioxide pro- 

 duction persists throughout the entire experiment. The values 

 obtained for oxygen consumption were variable, as is indicated by the 

 great irregularity in the respiratory quotients. The possibility of a 

 compensation can hardly be considered here and the variations are 

 undoubtedly due to some technical difficulty. The measurements 

 of the heat production show positive increments during the first three 

 periods, with values lower than basal in the fourth period, an increment 

 in the fifth period, and a value lower than basal in the sixth period. 

 The nitrogen values are characteristic, with a maximum in the third 

 period. The body-temperature averaged 36. 7 C.; the pulse rate 

 averaged 51 and the respiration rate 18. Unfortunately the results 

 obtained in this experiment do not permit definite conclusions regarding 



TABLE 229. H. C. K., May 15, 1906. Sitting. (2-hour periods.) 



Plasmon, plasmon graham biscuit, skim milk: 



Amounts, 100 grams plasmon, 47 grams plasmon graham biscuit, 439 grams skim milk; 



nitrogen, 15.25 grams; total energy, 862 cals. 

 Fuel value: Total, 728 cals.; from protein, 56 p. ct. ; from fat, 8 p. ct. ; from carbohydrates, 



36 p. ct. 



Basal values (May 3, 1906): COa, 51 grams; Oa, 47 grams; heat, 164 cals. Nitrogen in urine, 

 0.97 gram per 2 hours (May 15, 1906) - 1 



'Sample included amount for about 1 hour from the time subject began to eat food. 

 ^Subject ate food in 34 minutes. 



