88 Amcr^lcan Statistical Association. 



between the children of the non-hiboiin<^' chisses in the Eng- 

 lisli public schools and universities (see Table No. 20) and the 

 Boston school boys of American parentage (see Table No. 1), 

 it will be seen that there is very little difference in the heights 

 of the two sets of boys, and that the curves of growth, if con- 

 structed on the same sheet, would intersect each other at 

 seven different points, and be nearly coincident through their 

 whole course. In regard to weight the American boys are 

 up to twelve years of age lighter, fi'om twelve to seventeen 

 years heavier, and then again lighter, than English boys of 

 the same ages. It is, however, manifest that tlie boys whose 

 dimensions are thus compared cannot be regarded as belong- 

 ing to corresponding classes in their respective communities ; 

 for there are, doubtless, a large number of native Americans 

 to be found in the laboring classes of this city. In order to 

 obtain a set of observations more comparable to those made 

 on the children of the non-laboring classes in the English 

 public schools and universities, the following table has been 



Table No. 21. 

 Showing Average Height and Weight of Boston School-hoys of Amer- 

 ican Parentage Attending Piihiic Latin School^ Private Latin 

 School, and Massachusetts Institute of Technology. 



