HRDLicKA] PHYSIOT.OGTCAL AND MEDICAL OBSERVATIONS 115 



Average weights of white ami Indian children hi/ .stature groups 



The weight of the Indian children of both tribes and botli sexes, 

 and of all the stature groups, compares favorably with that of the 

 whites; it is, in fact, almost throughout greater than would be the 

 mean in the various groups of whites. It was seen that the younger 

 Indian children also exceeded in w^eight white children of similar 

 ages. This excess consists probably in a larger amount of the 

 reserve elements, mainly fat; the force tests, which have shown 

 results rather unfavorable to the Indian, do not indicate any excess 

 in musculature on their part. 



There are certain differences in weight between the children of the 

 two tribes (pi. xviii) : 



Average excesses and deficiencies of weight in grains to each centimeter of stature in the 

 San Carlos Apache compared with the Pima children 



The table shows that at almost all stages the Apache boys are the 

 heavier. Up to about 12^ years of age the Apache girls are slightly 

 heavier, but from then on, even into adult life, they are exceeded 

 in weight by the Pima. This agrees well with general observations, 

 which reveal among the latter a larger proportion than among the 

 Apache of stout girls among those in whom the period of puberty 

 has been passed, up to full womanhood. 



It may be observed, by reference to the force tests, that muscular 

 power, especially hand pressure, does not stand in close relation to 

 the weight of the body. This suggests that the intertribal differ- 

 ences in weight in the same stature groups, like those between Indian 

 and white children, are due in the main to differences in fat deposits. 



Sex differences in weight show (see Average weights, etc., table, 

 above) that, as among whites, there is reached in the Indian children 

 a period when the average w eight of the girls .exceeds that of the boys 



