Yobert Bennett Bean : 373 
jeft anterior association center of Negro brains resembling the Caucasian 
brain in shape is larger than the right, while the left anterior association 
center of Caucasian brains resembling the Negro brain in shape is smaller 
than the right, although this difference may be in the gyrus frontalis 
CAUCASIAN 
NEGRO 
MULATTO 
Cuarr Ill. Right Hemisphere.—Relation of the average length of radii at 
60° in the sagittal plane (0°, Fig. 2a), in the horizontal plane (90°, 
Fig. la), and in the plane with the brain tilted at 45° (Fig. 
3a); to the average of the radi at 120° in the same plane. The average is 
obtained by adding the length of the radii in these three positions and divid- 
ing by three. 
inferior or the motor area, instead of in the anterior association center ; 
and an attempt is also made to point out minor racial differences in in- 
dividual brains. To accomplish this, outline drawings of individual 
