Relations between Factors of Metabolism. 



n:5 



and the determination of the oxygen are obtained during the period from 1 a. m. 

 to 7 a. m., when the subject is asleep. We have, therefore, computed the respira- 

 tory quotients for a number of experiments made with subjects during the 

 period from 1 a. m. to 7 a. m. and these are given in detail in table 88. The 

 individual variations are quite marked, ranging from 0.67 with the subject 

 A. H. M., November 14, to 1.01 with the subject S. A. B., January 28, 1905. 

 It is highly probable that both of these figures are erroneous, for respiratory 

 quotients below 0.7 or above 1.0 are rarely found in health. The average of all 

 the experiments is 0.82. This then may be taken as indicating the average 

 respiratory quotient of subjects at least 6 or 7 hours after the last meal. In a 

 number of these experiments the sleeping period was, as a matter of fact, some 

 24 or 36 hours after the last meal, but usually the sleeping period was preceded 

 by a meal at 6 p. m., or 7 hours before. 



Table 88. Respiratory quotients of different individuals during sleep 



(1 a. m. to 7 a. m.). 



1 Period 4 to 7 a. m. 2 Period 1 to 5 a. m. 8 Period 1 to 3 a. m. and 5 to 7 a. in. 



