INDIVIDUAL BRAINS 
CAUCASIAN fe) 
NEGRO r 
MULATTO © ; CN 
=) 
09 
60 65 70 5 80 MM 
CHART I. Right Side.—Relation of the radii of the anterior association center (ordinates) to 
the radii of the posterior association center (abscissie); taken with the brain tilted 45°, the 
former at 60° from the anterior end, the latter 120°, as in Figure 3». The perpendicular line 
OWN gives the mean for the anterior association centers for both races; the horizontal lines C, N, 
for the posterior association centers of the Caucasian and Negro respectively ; and the diagona 
lines are the mean of both centers; for the Caucasian, C, for Negroes, N, and for both races 
combined, M@. This is true of the first four charts. 
