64 



S. J. HOLMES AND H. M. LOOMIS. 



Table V. — Continued. 



be seen that black appears in 10 out of 85 cases in crosses of 

 brown and brown ; in 8 out of 5 1 cases in crosses of brown and 

 light brown, as well as in a few cases of crosses of brown with 

 red and yellow. A few cases have come under my personal 

 observation in which the hair of one of the offspring was distinctly 

 darker than that of the darker parent. 



It is well known that there is a certain correlation between the 

 colors of hair and eyes, such as the association between dark hair 

 with dark eyes, and light hair with light eyes. Table IV. shows 

 that black hair may be associated with black eyes or with eyes 

 containing less pigment, the combination of black and blue being 

 not uncommon. Brown hair may be associated with brown eyes 

 or the lighter shades, but not with black eyes. Light brown 

 hair is associated with gray eyes or blue eyes but not with the 

 darker colors. Auburn hair may occur with brown eyes, but 

 red hair, which contains less melanin pigment, usually is asso- 

 ciated with blue, eyes. Probably fuller data would furnish ex- 

 ceptions to the above rules. According to our results dark hair 



