88 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



TABLE 31 (continued). Basal metabolism of J. J. C. at different times of day in bed- 

 calorimeter experiments. Boston. (Values per hour.) 



'The beginning of the "First hour" with the bed calorimeter was approximately between 9 



a. m. and 9 b 30 a. m. 

 Calculated to hour basis; measured in period of I h 32 m . Heat not corrected for change in 



body-temperature. 

 'Calculated to hour basis; measured in period of I h 8 m . Heat not corrected for change in 



body-temperature. 

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



The bed-calorimeter experiments with J. J. C. were even more unsat- 

 isfactory than those with the chair calorimeter, as the subject showed 

 a decided tendency to go to sleep and at times a definite although 

 not extended activity. Under these conditions the metabolism was meas- 

 urably less than the values obtained with the chair calorimeter. The 

 carbon-dioxide production from hour to hour was remarkably uniform, 

 especially when the average values alone are considered. Aside from the 

 values for the first period the heat measurements again show constant 

 average values; the general average for this apparatus was 65 calories 

 per hour, a value some 13 calories less than that found with the chair 

 calorimeter. This value undoubtedly represents very closely the basal 

 metabolism of J. J. (\, although, as stated above, even the values 

 obtained with the chair calorimeter may justifiably be used as a base- 

 line for studying the influence of the ingestion of food in experiments 



