CHAPTER IV 



FURTHER FACTS ABOUT THE KALLIKAK FAMILY 



ALTHOUGH the foregoing facts, figures, and charts 

 show conclusively the difference between good heredity 

 and bad and the result of introducing mental deficiency 

 into the family blood, yet because it is so difficult actu- 

 ally to appreciate the situation, because facts and figures 

 do not have flesh and blood reality in them, we give in 

 this chapter a few cases, graphically written up by 

 our field worker, to show the differences in the types 

 of people on the two sides of the family. These are 

 only a few of the many, but are fairly typical of the 

 condition of things that was found throughout the 

 investigation. On the bad side we have the type of 

 family which the social worker meets continually and 

 which makes most of our social problems. A study 

 of it will help to account for the conviction we have 

 that no amount of work in the slums or removing the 

 slums from our cities will ever be successful until we take 

 care of those who make the slums what they are. Un- 

 less the two lines of work go on together, either one is 

 bound to be futile in itself. If all of the slum districts 



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