PHYSICAL AND PHYSIOLOGICAL MEASUREMENTS. 



81 



ated by expressing heat-production in calories per kilogram of body- 

 weight. The magnitude of the difference between the correlations for 

 pulse and total heat and pulse and heat per kilogram of body-weight 

 is not large. In no series of men excepting the Gephart and Du Bois 

 selection can the difference be looked upon as statistically significant 

 in comparison with its probable error. Nevertheless the consistency 

 of the results from the larger series certainly indicates that correction 

 for the influence of body-mass upon total heat-production has increased 

 somewhat the closeness of interdependence between the rate of heart- 

 beat and metabolism. In the women the original series and the total 

 series show significantly larger positive correlations between pulse-rate 

 and heat per kilogram than between pulse-rate and total heat-produc- 

 tion. This is not, however, true of the supplementary series. 



TABLE 22. Comparison of correlation between pulse-rate and total heat-production and between 

 puke-rate and heat-production per square meter of body-surface. 



Table 22 gives comparisons of the correlations between pulse-rate 

 and total heat-production as given in table 21 and pulse-rate and heat- 

 production per square meter of body-surface by the two surface-area 

 formulas used in this memoir. 



The same type of relationship as that seen in the comparison of the 

 correlations for pulse-rate and gross heat-production and pulse-rate 

 and relative heat-production on a weight basis is apparent. 



