84 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



TABLE 29. Basal metabolism of J. R. at different times of day in chair-calorimeter 

 experiments. Boston. (Values per hour.) 



'The beginning of the "First hour" was for this subject approximately between 8 h 30 m a. m. 



and 9 h 15 m a. m. 

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



The carbon-dioxide production with this subject was remarkably 

 constant, as shown by the figures in both sets of averages. Individual 

 variations may be noted, however, the values being in two cases as high 

 as 28.5 grams per hour and in several instances as low as 25.5 grams. 

 On the whole, the agreement shows rather remarkable uniformity, not 

 only from month to month but from hour to hour. The same uniformity 

 is, in general, shown in the averages for the oxygen consumption. 

 The range in the individual values is from 20 grains to 24.5 grams. 

 Considerable variation appears in the values for the heat production. 

 Thus in the fourth hour a value as high as 89 calories was found, while 

 in another instance we have a value as low as 71 calories. When the 

 average values alone are considered, the variations from hour to hour 

 are found to be quite small, with the single exception of the average 

 for the fourth hour. In general, this subject produced 77 calories of 

 heat per hour. 



