DARWIN'S PROBLEM 



53 



The same was true of sheep breeders, and Darwin talked 

 with them too. "In Saxony," he says, "the importance of 



Types of Pigeon developed by Selection and Breeding 



i, Jacobins ; 2, English Carrier ; 3, Duchess ; 4, Fantails ; 5, Birmingham Tumblers ; 

 6, English Pouter. (From " Domesticated Animals and Plants," by E. Davenport) 



the principle of selection in regard to merino sheep is so 

 fully recognized that men follow it as a trade ; the sheep are 

 placed on the table and are studied like a picture by the 



