4S CORRECTING BY SUNLIGHT 



The white horse has been saved from the 

 wolves by man, but the secondary tertiary 

 and quarternary colours are also very largely 

 the result of man's work in crossing the primi- 

 tive strains of Europe with the imported African 

 Bay within the last couple of thousand years. 



Migration. The Romans imported milHons 

 of negro slaves who have not left a trace of 

 their blood in Europe. Wave after wave of 

 Blonde Migration from the Baltic has conquer-, 

 ed the Mediterranean states, but left no fair 

 descendants. The negroes become extinct 

 in Europe. The blondes become extinct on the 

 Mediterranean. 



And so with horses. Imported horses fail 

 to breed healthfully in the damp provinces of 

 India and Brazil, while horse sickness makes a 

 clean sweep of them in many parts of Africa. 

 It is probable, with horses as with men, that 

 no sudden importation to regions outside their 

 native zone of sunhght results in permanent 

 healthy breeding. The imported strain dies 

 out unless it is constantly renewed. Hordes 

 of Asiatics with Dun horses have swept from 

 time to time into Europe, and into India, but 

 Dun horses are scarce in both regions, and do 

 not exist in large numbers except in Scandi- 

 navia and in Katywar. 



