HOW CHARACTERS BEHAVE 



149 



more characters are involved the groups may, by patience, be 

 separated and new races established that will breed pure. The 

 greatest difficulty arises in separating for the dominant char- 

 acters, but the test is in the descendants. 



It will be noted too, in this connection, that in these new 

 races an absolutely new association of characters is often brought 



Fig. 26. A dark smooth parent and an albino rough parent. Below is their dark 

 rough offspring, and at the bottom one of the types that appeared in the grand- 

 children (see text), a new type associating the short coat and the white color. 

 — After Castle, 1905, Publication <?j, Carnegie Institution, Washington, D.C. 



about as when the white color and the smooth coat have been 

 brought together from two different sources. In this way new 

 races that will breed true may be got out of a mixture whether 

 the characters blend or not. 



Very few individuals pure. What has just been said has 

 reference to characters and not to individuals. As will be 

 seen below, it is a difficult task to find an individual that is 



