192 HEREDITY IN RELATION TO EUGENICS 



"The inhabitants are farmers and fishermen of average 

 intelUgence and good character, not addicted to drunken- 

 ness. A lack of enterprise, associated doubtless with the 



QOO^^S^DiQn npn op 

 oa D DODOaDODoaoa 



COUciinS Gott Gott Gott GOtt 



Fig, 169. — Pedigree of a portion of the Gott family of the Maine Islands, 

 illustrating frequency of cousin marriages in an isolated community. 



nature of their occupations, seems to be the cause of their 

 intermarrying." In this locality deaf mutism is the striking 

 trait. In 1880 there was a proportion of 1 to 25 of the whole 



DtO 



£|0 ^ 



rfi L- -IIFTirrn^g^^^ 



Fig. 170, — Pedigree of a family inhabiting Swan's Island, Maine, illustrat- 

 ing frequency of consanguineous marriage in a restricted and isolated com- 

 munity. The dotted lines connect cousins who have married each other, 



population, affected (Bell, 1889). Dr. Withington and 

 Dr. Bell report cases of hermaphroditism also from this 

 same locahty. 



