274 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



TABLE 205. F. M. M., January SO, 1910. Sitting. (1-hour periods.) 

 Beefsteak: 



Amount, 132 grams; nitrogen, 6.05 grams; total energy, 274 cals. 



Fuel value: Total, 221 cals.; from protein, 70 p. ct.; from fat, 30 p. ct. 

 Basal values (January 31 to February 19, 1910): COa, 26.5 grams; Os, 23 grams; heat, 1 80 cals. 



1 Heat eliminated corrected for change in body-weight, but not for change in body-temperature . 

 2 Sample included amount for about li hours without food and for 1| hours with food preceding 

 this period. 



3 Total amounts for the actual duration of the experiment, i. e., 5 h 40 m . 



L. E. E., January 17, 1910. But 163 grams of beefsteak, with a 

 nitrogen content of 7.20 grams, were eaten by the subject in this experi- 

 ment ; the values obtained thereafter are given in table 206. Consider- 

 able increments in the carbon-dioxide production, oxygen consump- 

 tion, and heat production were found throughout the whole experiment. 

 Unfortunately it is necessary to use for basal values the results obtained 

 in three experiments several months later; the base-line used may 

 therefore be somewhat too low. It is not impossible that somewhat 

 smaller increments would have been obtained than appear here if the 



TABLE 206. L. E. E., January 17, 1910. Sitting. (1-hour periods.) 

 Beefsteak: 



Amount, 163 grams; nitrogen, 7.20 grams; total energy, 308 cals. 



Fuel value: Total, 245 cals.; from protein, 75 p. ct. ; from fat, 25 p. ct. 

 Basal values (March 14 to May 11, 1910): CO 2 , 25.5 grams; O 2 , 21.5 grams; heat, 1 76 cals. 



1 Heat eliminated corrected for change in body-weight, but not for change in body-temperature 



