METABOLISM AS AFFECTED BY GROWTH. 



161 



TOTAL CALORIES PER 24 HOURS REFERRED TO ACTUALLY MEASURED BODY-SURFACE 



AREA (BOYS.) 



Employing the body-rsurface areas actually measured by the method 

 of Du Bois, we have plotted in figure 38 the total heat per 24 hours 

 and the actually measured body-surface areas for all of our boys. As 

 with the other charts, a smoothed curve has been laid on, approximat- 



FIG. 38. Basal heat production of boys per 24 hours referred to body-surface. 

 Point inclosed in square signifies puberty established. 



ing as closely as possible the central tendency. In plotting these 

 values we have followed the scale adopted by Harris and Benedict 1 

 of considering one-tenth of a square meter and 100 calories heat 

 production as of equal value. 



In contradistinction to the results obtained on adults, 2 the tendency 

 of the metabolism is not in a straight line, but in a distinct curve, a 

 curve strikingly similar in character to that found for the boys when 



1 Harris and Benedict, Carnegie Inst. Wash. Pub. No. 279, 1919, p. 157, diagram 26. 



2 Harris and Benedict, loc. cit. 



