Biometrika, Vol. VI, Part IV Plate I 
Pig- (vi) Fig. (ix) Fig. (x) 
Figs. (i)^(iii)=puru nogro. Fig. (iv) = negro x white. Fig. (v) = i)ure white. Figs, (vi), (vii), and (viii) = mulatto x negro. 
Figs, (ix) and (x) = niulatto-quadroou x negro. 
