22 OBSERVATIONS AND MEASUREMENTS ACADEMY MEMBERS [Memo ivol N xxm 



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Weight Versus Stature 



Under normal conditions the weight of the body correlates directly with stature, though 

 this correlation has a large range of variation. 



The most sensible way of showing the weight-stature relation is by the weight-height gram: 

 centimeter index. 17 This index in 232 old Americans at large, of the laboratory series 18 (mean 

 age 37.2 years), averaged 390.8; in American males of all derivations (calculated from life- 

 insurance data), it approximates 401, in Europeans in general 391; 19 in 135 academicians (mean 

 age near 60 years) it is roughly 422.5. The academicians relatively to stature average 9.25 

 percent heavier. This excess is especially marked in the old American group in the Academy, 

 which gives the average ratio of 426.6 grams per centimeter, to 420.5 in those of more recent 

 lineage — a difference connected probably with the more advanced mean age of the latter group 

 (members, old Americans — mean age 59 ; members, not old Americans — 61 years). The probable 

 causes of the excess of the ratio in both groups of the academicians as compared to that in the old 

 Americans at large, have already been mentioned. 



17 See following equation: 



W (in gm.) 



• For discussion of subject and other methods, see the Old Americans, p. 102 et seq. 



S (in cm.) 



" The "laboratory series" consisted, as to males, of 250 individuals from among the general population and may thus be regarded as especially 



representative. 



i» The Old Americans, p. 109. 



