162 



PRAIRIE AND FOREST. 



caused me to change. Thus on the Rio Grande 

 and in Southern New Mexico and Sonora, the wolf 

 is most frequently black; as you advance north- 

 ward red is the preponderating colour, gradually 

 changing into grey as you get into higher latitudes, 

 that changing to white as you approach the Arctic 

 circle. The texture of the hair in the black wolf is 

 coarse, and his covering scant that of the red animal 

 similar but not so much so, while the grey is well pro- 



GREY WOLVES. 



vided with an abundant fur, but not equal in quality 

 or texture to the Arctic variety. Here as in many 

 other races is to be observed the wonderful provision 

 of nature to enable the animal kingdom to be suitably 

 clothed for the climate they live in, whether they have 

 to combat with almost tropical heat or hyperborean 

 winters. Thus what is generally called the grey wolf 



