DURING POST-NATAL DEVELOPMENT. 



531 



CHART H.- 



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individuals below average stature the army normal standard corresponds fairly well 

 with our standard curve for age 20 years, while for individuals above average 

 stature it corresponds with our standard curve for age 30 years. The curve for the 

 army minimum standard is irregular. 



Individual growth-curves are illustrated in charts E, F, G, and H, which are 

 similar in general construction to those described above. The heavy line in each 

 chart represents the typical height-weight-index growth-curve. The ages given in 

 the column at the right in- 

 dicate the age chosen as 

 typical for reaching the stat- 

 ure shown opposite in the 

 left-hand column. The curve 

 of median stature, median 

 weight, and the correspond- 

 ing index for a given age 

 based on the Baldwin data 

 for boys, is shown by a dotted 

 line in charts E and F; and 

 one similar for girls in charts 

 G and H. The ages at which 

 Baldwin estimates median 

 stature and weight for each 

 sex are at half-year intervals 

 from 6 to 18. The total 

 number of observations on 

 boys was 1,587 for stature, 

 1,464 for weight; for girls 

 2,372 for stature, 2,101 for 

 weight. For the sake of 

 simplicity numerals indica- 

 ting the age reached at a 

 given stature in the Baldwin 

 median growth-curves are 

 omitted. It will be noted 

 that the Baldwin median 

 growth-curves run fairly 

 close to my typical growth- 

 curve. The women, however, reach a stature of 63.8 instead of 63 inches. 



Height-weight-index growth-curves are plotted for a number of individuals 

 tabulated by Baldwin in his tables 4,5, and 13 to 22. Each individual is distinguished 

 by a number. These numbers run from 1 to 100 for girls, 101 to 200 for boys. The 

 number of each individual selected for plotting in my charts is shown by a Roman 

 numeral at the base of his curve of growth. Along each curve of growth Arabic 

 numerals are placed which indicate the age at which a given stature and weight was 



Weight in pounds at a given stature and at an index of 



