16 HEREDITY OF SKIN COLOR IN NEGRO-WHITE CROSSES. 



TABLE 10. Father without factor for negro N; mother with z factors for negro N. 



TABLE u. Father without factor for negro N; mother with j factors for negro N. 



TABLE 12. Father without factor for negro N; mother with 4 factors for negro N. 



* N 43. Including i N 25 per cent. 



6 II 8, c?, skin color S3, 32, 7, 8; II II 9, skin 45, 32, 10, 13. d Including 2 N 25 per cent. 



TABLE 13. Father with i factor for negro N; mother without factor for negro N. 



i a mating white X 45 per cent N, the mother probably a 3-factor colored. This man tans heavily 

 ind, as N + R = 52 per cent, he doubtless has one factor for black. 



1 Frc 



