HUMAN CONSERVATION 



321 



STATE INSTITUTIONS FOR DEFECTIVE, DEPENDENT AND 

 DELINQUENT CLASSES 



which must be more or less directly borne down by the 

 unfortunate one. Moreover, the unfortunates who are 

 in institutions are but a small percentage of the total 

 number in the population who are not in institutions. 

 It should be remembered that although heredity plays 

 an important part in such life-tragedies it is not en- 

 tirely to blame for these depressing data. 



The restriction of undesirable additions to our 

 human stock may be partially accomplished, at least 

 in America, by employing the following agencies: 

 control of immigration; more discriminating marriage 



