1 6 The Third and Fourth Generation 



strain known as the Max- Jukes, and whether 

 the descendants are found in Connecticut, in 

 New Jersey, or even in Minnesota, they mani- 

 fest the same feeble-mindedness, indolence, 

 licentiousness, and dishonesty. 



In the foregoing case as well as in the family 

 history of the Darwins and the Bachs there is 

 considerable inbreeding, that is, mating between 

 individuals that are closly related. Such mat- 

 ings are intentionally carried out by the 

 breeder in the production of fine horses and 

 cattle, as seen in the pedigrees already given. 

 They seem to serve to emphasize what is in the 

 strain. If superior stock is used, inbreeding 

 merely prevents its dilution. If poor stock is 

 used, the inferior qualities continually reappear 

 in the offspring. Three of the four children of 

 Ada Jukes married cousins, with appalling 

 results. Charles Darwin married a cousin, as 

 did also his grandfather Wedgewood. Johann 

 Sebastian Bach was twice married, each time 

 to a Bach. The Darwin and Bach children 

 manifest the same desirable qualities as the 

 parents. 



