NORMALITY OF CHILDREN STUDIED. 



and Wood. This fact must be carefully considered in any subsequent 

 discussion of results. 



The picture exhibited by the study of boys in private schools s 

 duplicated almost exactly here in the case of girls in private schools, 

 where a superiority in the weight-age ratio is exhibited all along the 

 line from 10 to 18 years of age. Clearly with girls, as with boys, this 



Yrs. 2 4 6 8 10 12 14 16 18 20 

 FIG. 5. Relationship between body-weight and age with girls. 



superiority may be explained either by the fact that private-school 

 life results in the development of excessively heavy children or that 

 the children attending private schools represent a selected class enjoy- 

 ing better economic conditions favoring growth. 



RELATIONSHIP BETWEEN HEIGHT AND AGE WITH GIRLS. 



Finally, we have to consider the relationship between height and 

 age with girls. This ratio is shown in figure 6. In this figure the 

 curve for our laboratory girls shows that on the whole their heights 

 are measurably above both foreign standards up to about 8 years of 

 age, but only slightly above the Crum-Wood standard. Beyond the 

 age of 8 years our data agree very closely with both the Schmid- 

 Monnard and Crum-Wood series, but are perceptibly below the private- 

 school series. While, therefore, our girls exhibit a slight underweight 

 above 8 or 9 years of age when compared with the American average, 



