216 MOSTLY MAMMALS 



of skins sold by the latter body reached 1,451. It is note- 

 worthy that in the fur trade Greenland blue fox skins are 

 well known to be of the same fine-haired quality as the 

 white skins from the same locality, while the Alaskan blue 

 skins are equally coarse-haired. Consequently there is 

 presumptive evidence of the existence of a Greenland and 

 an Alaskan race of the species ; and, as a matter of fact, 

 American naturalists have recently split up the Arctic fox 

 into several distinct forms, some of which are regarded as 

 species. 



