Robert Bennett Bean 393 
The genu is not only larger in the Caucasian than in the Negro, but 
the size of the genu bears a more or less definite relation to brain weight 
in both races, an increase in brain weight being accompanied by a corre- 
sponding increase in the size of the genu. The splenium does not bear so 
definite a relation to brain weight, although there may be a slight in- 
crease in the size of the splenium with increase in brain weight. These 
statements may be verified by examining Charts VIII and IX, compiled 
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Cuarr IX.—Relation of the area of the splenium (ordinates) to brain 
weight (abscisse). With equal increments of brain weight there is not a 
proportionate increase in the area of the splenium. 
from Tables I, I’ and VII. A more or less definite racial difference is 
noted in the charts, but it is not marked. In Chart VIII draw a line 
horizontally through the 2.60 square centimeter ordinate, and draw an- 
other line vertically through the 1300-gram abscissa until these two lines 
intersect, and continue them to the limits of the charts. Very few sym- 
bols representing Negro brains are found above and to the right of these 
