718 THE AMERICAN NATURALIST [Vol. XLIV 



IV. The D. G. V. Family (see Plate) 

 This remarkable family comprises a great mixture of 

 white, negro and even Indian blood, as well as many con- 

 sanguineous marriages. The Man family comes from the 

 same rural community, but its connections with the D. 

 G. V. family have not yet been established. It will be 

 observed that every albino has the blood of all three 

 families D., G. and V., so it can not be said, at present, 

 from which family albinism originally came. It will be 

 noted, also, that both of the youngest family (whose his- 

 tory is best known) arise from cousin marriages. Con- 

 sidering only those families in which albinism actually 

 occurs there are 8 albinos in 22 children, which is a 

 greater proportion than the expected 25 per cent. (5 or 6 

 albinic offspring). It is clear, however, that it may well 

 be that there is potential albinism in one or more of the 

 families with 3 to 5 children, in which by chance it fails 

 to appear— the 22 children are merely a minimum. 

 Details about some of the persons in this family follow : 

 V. 1 7, Yellowish complexion, brown hair and iris. 

 V. 8, Yellowish complexion, light brown hair, blue iris. 

 V. 9, An almost white mulatto, very light brown hair, 

 blue iris. 



V. 10, An almost white mulatto, brown hair, blue iris. 



VI. 4, Intermediate complexion, light brown hair, gray 

 iris. 



VI. 5, Yellowish complexion, light brown hair, blue 

 iris. 



VII. 1, T. V., aged 3, albino, hair white, iris colorless, 

 retina with pinkish glow, nystagmus present, intellectu- 

 ally bright and well developed. 



VII. 2, F. V., aged 4, intermediate complexion, hair 

 and iris dark brown. 



VII. 3, M. V., aged 1, brunet, hair and iris black. 



V. 20, J. V. (Indian, French and negro blood), yellow 

 skin, very light brown hair, yellow iris. 



"'The Roman numeral refers to the generation; the Arabic to the 



