Metabolism Experiment No. 75. 



189 



Relations between Oxygen- Consumption, Cakbon Dioxide Elimination, and Heat 



Production. 



The same constancy in the various relations which the carbon dioxide 

 elimination, oxygen consumption, and heat production bear toward each 

 other in earlier experiments is found here. The thermal quotients for the 

 different periods are comparatively regular throughout the experiment. This 

 may indicate continued improvement in the experimental technique. Occa- 

 sional anomalies are found both in the thermal quotients and in the respiratory 

 quotient for the periods, but these serve only to illustrate the limitations of this 

 type of apparatus and the difficulties encountered in securing satisfactory 

 quotients for short periods. For 24-hour periods we believe the quotients to 

 be accurate in all cases. The respiratory quotients were highest on the 

 first and second days, but decreased on the third and remained practically 

 constant for the remainder of the experiment. The respiratory quotient, as in 

 all previous experiments without food, was highest on the first day. 



Table 133. Oxygen and carbon dioxide thermal quotients and respiratory 

 quotients Metabolism experiment No. 75. 



1 See Table 131. 



