108 



FOOD INGESTION AND ENERGY TRANSFORMATIONS. 



average values for the experimental days a group may be observed from 

 June 20 to July 3, 1912, with an average of 217 c.c., and on June 5 

 and July 18, 1913, averages of 212 c.c. and 211 c.c. respectively were 

 obtained. Aside from these low values no tendency is shown toward 

 an alteration of the metabolism throughout the period of experimenta- 

 tion and we may fairly state that the average oxygen consumption of 

 this subject as measured during a period of one year and two months is 

 225 c.c. 



TABLE 42. Oxygen consumed at different times of day in respiration experiments; subject 

 J. K. M., in post-absorptive condition and lying on couch. (Values per minute.) 



Average age, 23 years. Average body-weight (naked), 60.4 kilograms. Height, 173 cm. 



'The experimental periods were usually 15 minutes in length and in all but one instance there was but one 

 period in the half hour. 



2 The total number of periods in whcih the oxygen was determined in the 33 experiments was 166. 



