202 



HEREDITY AND VARIATION 



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

 progenj^ of the original generation has cost the state of New York 

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



A* 



X 



K 



©H®ET®~iT© 



N 



®® 



N 



li 



hhSW^ 



N 



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. This chart shows the record of a certain family for three generations. 

 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 Daven- 

 port.) 



to the care of prisons and asylums considerably over a hun- 

 dred feeble-minded, alcoholic, immoral, or criminal persons. 

 Another case recently studied is the " Kallikak " family.^ This 

 family has been traced to the union of Martin Kallikak, a young 

 soldier of the War of the Revolution, with a feeble-minded girl. 



I^^^^T<^ 



N 



d. C. d. 



m 



d. d. d. I 

 l-nj.ln/.lnj.l 



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 record of feeble-mindedness. 

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



^The name Kallikak is fictitious. 



