GASEOUS METABOLISM DURING WALKING. 



539 



figures show an average cost per horizontal kilogrammeter of 0.535 

 gram-calorie. Benedict and Murschhauser' report values obtained for 

 2 normal subjects (their Subject I and Subject II) of 0.507 and 0.493 

 gram-calorie, and also give an average figure of 0.550 gram-calorie com- 

 puted from a summary of the work of Zuntz, Durig, Brezina, and 

 others.^ The average value of 0.597 gram-calorie for the 11 men of 

 Squad B is somewhat higher than the values found by the other 

 methods, though the variations are not on the whole any greater. 

 Since such striking prominence is given in table 138 to the individual 

 coefficient per horizontal kilogrammeter, it must be emphasized that 

 these represent determinations upon one subject for one period in the 



day and hence should not be directly compared to the average values 

 given in table 139, which represent in all cases average values of from 

 3 to 13 periods. Hence attention is called to the differences in values 

 found in table 139 for the series of normal individuals. It is there seen 

 that in the entire series the lowest average found was 0.458 and the high- 

 est 0.627. The lowest average, 0.458, is 0.021 lower than the lowest 

 found with any member of Squad B, i. e., 0.479. The highest average 

 for the normal individuals was 0.627 which is exceeded in table 138 by 

 members of Squad B in five instances. How, Ham, Kim, McM, and 

 Tho. The average for the entire squad, 0.597, is clearly somewhat 

 higher than not only the average found with the normals, namely, 

 0.535, but likewise the three sets of averages reported in earUer publi- 

 cations. The values found for Squad B in table 138 are to be used 

 primarily for comparative purposes with another set determined on the 

 same individuals by exactly the same technique after 20 days of reduced 

 diet. It is to be remembered that we have here with this apparatus 



^Benedict and Murschhauser, Carnegie Inst. Wash. Pub. No. 231, 1915, pp. 77 and 82. 

 ^ Ibid., p. 28. 



