CROSSING BREEDS 137 



In the human race the different varieties may cross. It 

 seems that there may be some gain in the crossing of 

 peoples nearly akin, as the English, German, French, etc., 

 who are all branches of the Caucasian stock. The mixture 

 of these different, but kindred, types often produces 

 valuable results. There is, however, considerable evidence 

 for the view that crossing the different races, as negroes 

 with Indians, and negroes with whites, gives offspring 

 more of the nature of hybrids; and while they are not 

 necessarily infertile, they do not seem to have the vigor 

 of the original stocks. 



