262 



HEREDITY AND VARIATION 



Margaret, the mother of criminals." In seventy-five years the 

 progeny of the original generation has cost the state of New York 

 over a million and a quarter of dollars, besides giving over to the 



In this and the following diagrams the circle represents a female, the square a 

 male. (N) means normal ; Q means feeble-minded ; A, alcoholic ; T, tuber- 

 cular ; S.r, sexually immoral; S'#, having syphilis. This chart shows the 

 record of a certain family for three g?nerations. A normal woman married 

 an alcoholic and tubercular man. He must have been feeble-minded 

 also as two of his children were born feeble-minded. One of these children 

 married another feeble-minded woman, and of their five children two died in 

 infancy and three were feeble-minded. (After Davenport.) 



care of prisons and asylums considerably over a hundred feeble- 

 minded, alcoholic, immoral, or criminal persons. Another case 

 recently studied is the " Kallikak ' family. 1 This family has 

 been traced back to the War of the Revolution, when a young 

 soldier named Martin Kallikak seduced a feeble-minded girl. 



This chart shows that feeble-mindedness is a characteristic sure to be handed 

 down in a family where it exists. The feeble-minded woman at the top left 

 of the chart married twice. The first children from a normal father are all 

 normal, but the other children from an alcoholic father are all feeble-minded. 

 The right-hand side of the chart shows a terrible iveord of feeble-mindedness. 

 Should feeble-minded people be allowed to marry? (After Davenport.) 



! The name Kallikak is fictitious. 



