DISCUSSION OF RESULTS. 



161 



and to see if definite relationships can be established for the heat- 

 production per square meter of body-surface and the age, weight, and 

 length of the different infants. 



Fig. 62. Chart showing age of infants and heat-production per square meter 

 of body-surface (Howland curve) per 24 hours. 



COMPARISON OF ACTUAL BODY-WEIGHT AND HEAT-PRODUCTION PER 

 SQUARE METER OF BODY-SURFACE. 



In the charts in figures 63, 64, and 65, the heat-production per square 

 meter of body-surface has been compared with the actual body-weight 

 using the three formulas. In the chart on the Meeh formula given in 

 figure 63, we should again expect according to current belief to find 

 the values grouping themselves in a vertical line. On the contrary, 

 the dispersion is even more marked than in the charts plotted on the 

 basis of age, with a tendency, if any, toward a horizontal rather than 

 a vertical alignment. The complete absence of correlation is here 

 again strikingly shown, nor is the general picture of the relationship 

 between actual body-weight and the heat-production per square meter 

 of body-surface materially altered when the plots are made on the 

 formula of Lissauer (figure 64) or on the formula of Howland (figure 65). 



It is again important at this point to recall the fact that the observa- 

 tions made on these infants were all under constant conditions, namely, 

 complete muscular repose and at approximately the same length of 



