The Age of Parents 49 



result is shown in the following table, in which 

 all three tabulations appear: 



Percentage of Births to Fathers of Different Ages. 

 In Pedigrees 

 of Eminant 



Ages of Fathers Men Normal In Chicago 



24 and under. . . . 1.63 9.06 15.83 



25 to 29 9.77 23.05 31.20 



30 to 34 16.63 26.00 24.67 



35 to 39 19.19 19.67 15.30 



40 to 44 20.23 13.39 8.06 



45 to 49 14.53 5.50 3.55 



50 and over 18.02 3.33 1.39 



Is it really necessary to comment on that 

 table? Is it not perfectly plain that birth con- 

 trol as it is being practiced in Chicago is carry- 

 ing the race backward? 



It is recognized that from powerful-minded 

 parents we get powerful-minded offspring, and 

 from feeble-minded parents we get feeble-minded 

 offspring. It was shown before that mental 

 power in human beings continues to develop 

 from youth to old age. Hence, the same normal- 

 minded person may be relatively feeble-minded 

 as a parent in early life, and relatively power- 

 ful-minded in later life. We have examined pow- 

 erful-minded persons and have found that they 



