26 Anthropological Investigations. 



In white girls the proportion is 0.50 to each child, or exactly 1 10 

 each individual. 



In the colored male similar proportion is 0.88 to each individual, 

 which would make approximately two of such abnormalities in every 

 three boys; while in the colored female the number was 0.08 to 

 each child, which would make about three abnormalities to every 

 four children. 



The figures just given show that acquired abnormalities through 

 pathological processes are, in opposition to congenital abnormali- 

 ties, considerably more frequent in the colored children of both 

 sexes than they are in the white. 



In both classes of children we again notice a somewhat larger 

 proportion of the irregularities in the male children. 



Of abnormalities acquired by habit the white males show 0.125 

 to each person, or 1 to 8 individuals; the white female children 

 0.04, or about 1 in 26 individuals. In the colored children similar 

 proportions were respectively 0.16 in the boys and 0.10. to each child 

 in the girls, or about 1 to 6 in the male and 1 to 9 in the female 

 individuals. 



In both white and colored children, abnormalities acquired by 

 habit are seen to be more frequent in the boys than they are in the 

 girls, and in the negro children of both sexes the proportion ci 

 these characters preponderates over that found in the white children. 



The characters whose origin is questionable are found in almost 

 equal proportions in the different classes of children; there are about 

 2 of such characters to 3 children, excepting the colored boys, 

 where the proportion was found only about 1 in 2 individuals. 



To sum up in a few words the results of the data just given, we 

 find that on an average all classes of abnormalities predominate in the 

 male children, both white and colored. This predominance is especially 

 marked in the case of the irregularities acquired by habit. 



The white and colored children differ in their abnormalities very re- 

 markably. The white children of both sexes possess on an average a 

 decidedly larger proportion of inborn abnormalities. On the other hand, 

 the negro children acquire in early life a larger percentage of irregu- 

 larities than the white children. These facts signify that while the 



