364 ANNALS NEW YORK ACADEMY OF SCIENCES 



blood boys show a peculiar reverse relation; low correlations for 10-13 

 with the maximum at 8 and 14 respectively. We did not calculate the 

 correlations for mixed females. In general, we find here about the same 

 correlated values for Indian children as for whites, though there is, as 

 elsewhere, a suggestion of later manifestation of maximum growth, 

 which, however, is far from certain with so few cases. The results for 

 the mixed blood are curious and might be set down as accidental, if this 

 group did not show other tendencies to depart from the normal. Thus, 

 it may turn out that erratic values are a characteristic of such a mixture. 

 In contrast to the preceding, the correlation values of the mixed blood 

 do not tend toward an intermediate position with respect to Indian and 

 white standards. 



In general, it appears that these Dakota children are taller and heavier 

 than white children as measured and reported; that the mixed blood 

 children stand between the values for the two races, and that while there 

 is a suggestion of a later maximum growth period for the Indian, the 

 difference is not decisive, the probability being that there is no difference 

 in the time periods of growth. The tables, however, suggest a slightly 

 more rapid maturity for Indian children during the 15th and 16th years 

 of life. The variability for these Indian children is less than for white 

 children. It is often said that the children of mixed parents are taller 

 than either parent, but these results are in direct contradiction to that, 



