Hrdlicka. 25 



the individual. These characters will interfere but very little, if 

 at all, with any progress in life of which the child may be otherwise 

 capable. 



In addition to the above data, I have endeavored to pick out and 

 contrast the different abnormalities according to their origin. It was 

 found that the majority of the atypical characters can be referred to 

 three classes of origin, that is, either among the inborn, or con- 

 genital characters, which are not due to any disease or injury; or 

 among those which were acquired through some pathological 

 process; or among those which were acquired through some habit 

 of the individual. 



In about one-third of all the abnormalities the origin was not 

 certain, and all these cases were included in the group which will 

 be marked " Origin questionable." The result of this part of the 

 analysis is shown by the following interesting figures: 



The proportion of congenital abnormalities was in the white 

 males as 1.52 to each subject examined, or, approximately, there 

 were three of such abnormalities to each two white boys. Similar 

 proportions in the white females were 1.07 to each individual, or, 

 approximately, one to each child. 



In the colored male and female the proportions were respectively 

 1.03 and 0.73 to each child. 



Thus abnormalities of congenital origin are considerably more 

 frequent, in both white and colored males, than they are in the 

 females of the two classes. 



Furthermore, congenital abnormalities in both sexes of the white 

 children are considerably more numerous than they are in the cor- 

 responding sexes of the colored subjects. The colored children are 

 born more free from physical defects than are the white children. 



As to the abnormalities acquired through some pathological 

 process, we obtained the following proportions in the different 

 classes of children. 



In the white male there were 0.56 of such acquired character to 

 each child, and about 1 such irregularity in each two individuals. 



