110 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



ments, and the average carbon-dioxide production and oxygen con- 

 sumption in the successive half hours of the day; also the number of ex- 

 perimental days from which each value is drawn. As in the preceding 

 tables, grand averages are given for each subject for the carbon-dioxide 

 production and oxygen consumption for the total number of experi- 

 mental days, this being found by averaging the daily averages of each 

 factor for all of the experiments with the individual subjects. The 

 data are arranged according to the weight of the subjects in each group. 

 As would be expected from the results found in tables 37 to 42, the 

 data indicate that with these subjects, also, there is no noticeable 

 tendency toward an alteration in the basal metabolism as the day 

 progresses, particularly in the values for the oxygen consumption. 



TABLE 44. Gaseous metabolism at different times of day in respiration experiments; subjects 

 in post-absorptive condition and lying on couch. (Values per minute.) 



'Average body-weight and average age for the series of experiments. 



The experimental periods were usually 15 minutes in length and in most instances there was but one period 

 in the half hour. The average time of the first period used was at all times approximately between 8 a. m. and 

 9 a. m., except as otherwise noted. 



'The average time of beginning the first period with this subject was 6 h 30 m a. m. 



