Hrdlicka. 17 



The average proportion of abnormalities to the whole number 

 of subjects with same were found to be as follows: Proportion to 

 each white boy, 2.71; to each colored boy, 2.60; to each white girl, 

 2.33; to each colored girl, 2.05. 



I doubt very much whether similarly careful and extensive records 

 on any 1,000 ordinary children of similar ages outside of the insti- 

 tution would show figures greatly different from those above. Of 

 course, in the children of the wealthy classes we may find that 

 certain of the abnormalities have been corrected by the physician, 

 dentist, oculist or trainer. 



Excluding the children in whom one-half or more of the parts of 

 the body examined show some abnormality, I think it would be 

 safe to consider the remaining inmates of the asylum, so far as 

 abnormalities are concerned, as fairly average children. 



The different number of abnormalities observed in different sub- 

 jects give us a basis for several interesting curves which illustrate 

 very nicely the averages and the extremes of the physical condition 

 of the children, according to their color and sexes. These curves, 

 which do not need much comment, are here reproduced. We can 

 notice principally the aggregation of the bulk of the children within 

 the first three or four columns, that is, near to the normal. It can be 

 seen, further, that all the curves in the white and in the colored, and 

 in the males as well as in the females, present almost the same figure. 



The somewhat more erratic curves in the negroes are undoubtedly 

 due to small numbers of individuals which enter into their formation. 



The next step in the analysis of the observed abnormalities will 

 be a division of these characters according to the parts of the body 

 on which they were detected. 



I will give here several rows of figures which will show the per- 

 centage of the abnormalities on each separate part of the body in 

 the white children, and next to these I will place similar percentages- 

 obtained on negro children. The latter figures are still somewhat 

 influenced by the small number of subjects. 



These data have no relation to the amount of abnormalities ob- 

 served in the different classes of children. They simply express the 

 relative frequency of the various irregularities in different portions 

 of the body. 



