DISCUSSION OF RESULTS. 



71 



When instead of the muscular repose of these standing positions the 

 subject swings his arms vigorously, as would be done in rapid walking, 

 we note a great increase in the metabolism. Unfortunately there is 

 not a particularly satisfactory agreement in the values obtained for the 

 two experiments under these conditions, for on May 11 the heat-output 

 per minute was 2.53 calories, or essentially 100 per cent greater than 

 when the subject stood quietly, while on May 15 the metabolism was 

 3.13 calories or approximately 150 per cent greater than the metab- 

 olism of the subject when standing at rest. 



TABLE 10. Metabolism of subject II standing in different positions in experiments without food. 



[Values per minute.] 



lf rhe average respiratory quotient of 0.83 is assumed in computing heat-output on this day. 

 2 The subject stood swinging his hands and arms as vigorously as in the most rapid walking. 



In the subsequent computations several basal values may be em- 

 ployed. The most obvious are those obtained with the subject in the 

 lying position and, as has already been seen, we have the results of two 

 series of measurements which were made with an interval of approxi- 

 mately two years. We have also used the value obtained with the 

 subject in the standing position. With subject I, three periods with 



