192 HEREDITY IN RELATION TO EUGENICS 



"The inhabitants are farmers and fishermen of average 

 intelligence and good character, not addicted to drunken- 

 ness. A lack of enterprise, associated doubtless with the 



Dp 



DiO c1m5050& [DiOp 6ph\ OiD 



couilns lion Grt/i ^-^ - ^-^ - .. 



God Golt 



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

 illustrating frequency of couain 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 



DiO 



So DrODjO 



61 i h inS) Op 



■^"c:::: 



'5S 



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 Unes connect cousins who have married each other. 



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

 Dr. Bell report cases of hennaphroditism also from this 

 same locality. 



