82 A BIOMETRIC STUDY OF BASAL METABOLISM IN MAN. 



The correlations between pulse-rate and calories per square meter 

 of body-surface by both methods of measurement are higher than the 

 correlations between pulse-rate and gross heat-production in every 

 series except the athletes and the individuals other than the Gephart 

 and Du Bois selection as estimated by the Du Bois height-weight chart 

 and the individuals other than the Gephart and Du Bois selection as 

 estimated by the Meeh formula. The differences in these anomalous 

 series are smaller than their probable errors. 



Since it has been shown in the preceding discussion that correction 

 for body-size increases the intensity of the correlation between pulse- 

 rate and heat-production, it is worth while to inquire which method of 

 correction brings about the maximum intensity of interrelationship in 

 these two physiological measurements. 



TABLE 23. Comparison of correlations between pulse-rate and heat-production for body-size by 



various methods. 



This step involves (a) the comparison of the influence of correction 

 for the two measures of surface with that of the influence of correction 

 for body-weight and (6) the comparison of the two measures of surface- 

 area themselves. The results are shown in table 23. These are very 

 consistent throughout, although because of the smallness of several 

 of the series the probable errors of the differences are very high. 



With few exceptions it appears that the correlation between pulse- 

 rate and heat-production per square meter of body-surface, whether 

 measured by the Meeh formula or by the Du Bois height-weight 

 chart, is higher than that between pulse-rate and heat per kilogram 

 of body-weight. Again, a comparison of the correlation between 

 pulse-rate and heat per square meter of body-surface by the two 

 methods of measurement, suggests that the correlation with body- 

 surface as measured by the Du Bois height-weight chart gives 



