Hrdlicka. 59 



PART III. 



Physical Differences Between White and Colored Chil- 

 dren of the Same Sexes and Ages. 



The differences between the two classes of children may, in 

 a resume, be arranged into those which were observed equally in 

 both sexes, and those which are prevalent in either the boys or the 

 girls. Some of the characters in which the white and the black 

 children differ were fairly well brought out in preceding parts of 

 this study and will receive here but a passing notice. Other differ- 

 ences have not as yet been mentioned, and these will receive more 

 consideration. 



Differences Without Regard to the Sex or Age of the 



Children. 



In a general way it can be stated that the white children present 

 more diversity; the negro children more uniformity in all their nor- 

 mal physical characters. This becomes gradually more marked as 

 the age of the children advances. 



As to physical abnormalities, those of congenital origin are much 

 less frequent in the negro child than they are in the white one; with 

 acquired abnormalities, principally the results of rachitic conditions, 

 the case is almost the reverse, those characters being less frequent in 

 the white children. 



In detail we find the following differences between the two classes 

 of children: 



Size of the Body. 



The average height of the colored child is in all ages from one to 

 three mm. greater than is the average height of white children, all 

 the nationalities of these latter being taken together; it is still 

 slightly greater when compared with the average height of only the 

 American-born children, who are taller than the children of most 

 other nationalities. 



