56 



Anthropological Investigations. 



There are two more measurements of the head which deserve 

 mention. The one is the Bin-Auricular diameter of the head, which 

 shows the width of the head at about the height of the base of the 

 brain and immediately in front of the ears, and the diameter frontal 

 minimum, which shows the width of the base of the forehead. Ac- 

 cording to our figures, which are given below, the Bin-Auric Diame- 

 ter differs much less in the two sexes of the children than is the case 

 with any other measurement of the head that we have so far spoken 

 of. In the colored children this diameter is always smaller than in 

 the white children of corresponding ages; thus the skull of the negro 

 child is absolutely narrower in this location, that is at the height of 

 the base of the brain and immediately in front of the ear, than it is 

 in white children. 



Average Diameter Bin-Auric of the Children According to Color, 



Sexes and Ages. 



The diameter frontal minimum increases gradually with the ages 

 in all of the children. The measure is generally smaller on the 

 female heads. As to the differences in this measure between the 

 white and the negroes our figures cannot be taken as conclusive as 

 we have a too small a number of the colored children. Up to eleven 

 years of age, according to our figures, the forehead of the negro 

 child, both male and female, is on the average somewhat narrower 

 than the forehead of the white child. After eleven years of age the 

 conditions seem to be somewhat reversed. I am inclined to believe, 



