EXPERIMENTS WITH HORIZONTAL WALKING. 



161 



an increase in average speed from 43.8 to 77.5 meters per minute, while 

 with an increase in speed from this point to 96.0 meters per minute, the 

 increment in the respiration over the standing increased 3.3 respira- 

 tions. 



The respiration-rate of E. L. F. was of marked peculiarity on the two 

 days of January 22 and 24 as compared with the rate on January 21. 

 (See table 12, p. 68.) On all three days the respiration tracings 

 shown on the kymograph for the standing periods were normal and not 

 dissimilar to those of the other subjects. This was also the case with 

 his walking periods on January 21, but in his walking periods of 

 January 22 and 24 there was a marked change, the rates falling to 5 to 

 8 per minute, while the volume per respiration (unreduced), as meas- 



TABLE 44. Increments in various physiological factors due to walking on a level in experiments 



without food. (Values per minute.) 



