98 



METABOLISM DURING WALKING. 



The metabolism measurements for E. D. B. have been plotted in 

 figure 9, which shows the average daily values on the dates that standing 

 experiments were made during the period from October 1915 to April 

 1916. It is seen from this chart that between December 22 and 31, 

 1915, the carbon-dioxide output and oxygen consumption, as well as 

 the heat-output, rose to a markedly higher level, the values being 

 considerably lower between October and December than those obtained 

 during the remainder of the winter and in the spring months. This 

 may be accounted for in part by an increase in the body-weight of 

 approximately 7 per cent, but this alone is not sufficient to account for 

 all the increase. The technique of the experiments had not been 

 altered, but the pulse-rate showed a like acceleration at this time, thus 

 indicating a stimulated body condition from some cause. This dif- 

 ference in the metabolism between the early and late experiments is 

 shown in table 21, in which the averages of the daily values for the 

 metabolism from October 4 to December 22, 1915, are compared with 

 those for the period from March 1 to April 15. 1916. These values 

 have also been computed on the basis of per kilogram of body- weight, 

 and show an increase in the total heat produced per kilogram of oody- 

 weight of 1.5 per cent. Since only the increments in metabolism are 



c. 



37.39 

 36.89 

 36.39 



R.Q 

 93 



83 

 73 



O, 



c. c. 

 290 



240 

 190 



FIG. 9. Metabolism of E. D. B. in standing experiments without food. (Values per minute.) 



