42 Heredity and Child Culture 



as in feeble-mmdedness, epilepsy and mania. 

 These are generally considered to act as Mendel- 

 ian recessives. Professor Conklin believes 

 there is often an hereditary basis for nervous 

 or phlegmatic temperaments, for emotional, 

 judicial and calculating dispositions, for 

 strength or weakness of will, for tendencies to 

 moral obliquity or rectitude, and for capa- 

 city or incapacity for the highest intellec- 

 tual pursuits. There is great danger of close 

 blood relatives marrying when a neurotic 

 strain runs in the family. When free of this 

 danger, however, evil consequences to the off- 

 spring do not always follow. 



There is a large class in every community that 

 should in some way be prevented by the State 

 from propagating their kind. The reason for. 

 this is readily seen in the danger and expense 

 they put upon the community at large. 



The insane, idiotic, blind and deaf mutes 

 tend to increase faster in proportion than the 

 normal healthy population. Paupers and the 

 various grades of criminal poptilation also 

 freely propagate. A careful study of prisoners 



