140 METABOLISM AND GROWTH FROM BIRTH TO PUBERTY. 



TOTAL CALORIES PER 24 HOURS REFERRED TO WEIGHT (BOYS). 



In figure 26 we have plotted for boys the total calories per 24 hours 

 referred to body-weight. The general sweep of the curve and the 

 dispersion of the points about a central sketched line is not unlike 

 that for boys for the total calories referred to age. (See fig. 22, page 

 133.) In fact, a superficial inspection would imply that of the two 

 charts the points are even more closely grouped about the central line 

 in figure 26. In such comparison it should be noted that the scales 

 in the two charts are somewhat different, since each vertical division 

 in figure 22 corresponds to 150 calories, while in figure 26 it corresponds 

 to but 100 calories. 



2kgs. 4 



10 12 ' 14 



16 



18 20 22 24 26 28 30 32 34 36 38 40 42 



FIG. 26. Basal heat production of boys per 24 hours referred to body-weight. 

 Point inclosed in square signifies puberty established. 



The general close agreement between the different points and the 

 sketched central curve is rather striking, although at times the devi- 

 ations amount to 150 or more calories. Thus, at 19 kg. one point 

 varies considerably over 100 calories from the line, corresponding to 

 a deviation of 15 per cent. Another child, weighing 38 kg., is 180 

 calories below the general line, while a third child, weighing 9 kg., 

 is 125 calories, or 25 per cent, below the central line. Similar instances 

 of values above the line may likewise be noted. While the child 

 designated as No. 258, with a weight of 50.8 kg., seems on the chart 



