282 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



gen consumption and heat production in the third period are correct, 

 the metabolism had returned to the basal level in that period and the 

 figures obtained for the fourth period were therefore abnormal and due 

 to some extraneous factor. On the other hand, an examination of the 

 respiratory quotients shows an abnormally high value of 0.89 in the 

 third period, which suggests an error in the measurement of oxygen 

 consumption with a possible compensation in the fourth period. An 



TABLE 213. V. G., January 21, 1911. Sitting. (45-minute periods.) 

 Beefsteak and potato chips: 



Amounts, 215 grams beefsteak, 20 grams potato chips; nitrogen, 10 grams; total energy, 



551 cals. 

 Fuel value: Total, 463 cals.; from protein, 55 p. ct. ; from fat, 36 p. ct.; from carbohydrates, 



9 p. ct. 



Nitrogen in urine, 0.32 gram per 45 minutes. 



Basal values: COz, 22 grams (January 21, 1911); 62, 19 grams (January 2 and 21, 1911); heat 

 (computed), 64 cals. (January 21, 1911). Nitrogen in urine, 0.20 gram per 45 minutes. 

 (January 21, 1911). 



TABLE 214. A. G. E., January 23, 1911. Sitting. (45-minute periods.) 

 Beefsteak and potato chips: 



Amounts, 272 grams beefsteak, 20 grams potato chips; nitrogen, 12.63 grams; total energy, 



677 cala. 

 Fuel value: Total, 566 cals.; from protein, 57 p. ct. ; from fat, 37 p. ct. ; from carbohydrates, 



6 p. ct. 



Nitrogen in urine, 0.42 gram per 45 minutes. 



Basal values (January 23, 1911): CO2, 18 grams; Oa, 16 grams; heat, 1 53 cals.; respiratory quotient, 

 0.82. Nitrogen in urine, 0.21 gram per 45 minutes. 



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

 'Subject ate food in 28 minutes. 



