4 6 



Anthropological Investigations. 



Average Pressure Force in Left Hand of the Children, According to 

 Color, Ages and Sexes. 



Average Traction Force of the Children, According to Color, Sexes 



and Ages. 



The pressure and traction powers can be studied a point further. 

 We can study the relations of these items to the weight of the chil- 

 dren. The next table will show such relations in both the white and 

 colored children grouped together. The figures show that the 

 younger the child is, the smaller is its proportionate force in pounds 

 to each pound of the weight of its body. Curiously, there is a dis- 

 tinct and persistent annual increase in this proportion, and when we 

 reach the seventeenth year of life we find that the proportion of mus- 



