No. 527] SKIN PIGMENTATION IN MAN 671 



S. Family 



The following families are the product of North Amer- 

 ican Indian and white crosses. 



In some of these families segregation is apparent, 

 notably, in B., G. and S., and Bes and Coo. 



Finally, we may refer to an observation made by 

 Louis Agassiz (1891, p. 532) in Brazil which bears upon 

 the matter of segregation, botli of skin color and other 



