VABIETIES AND SPECIES. 



169 



less to difference of latitude great varieties of colour are 

 to be found among this species but neither in habits, 

 voice, nor shape are they in the least dissimilar ; I am 

 aware that at one time I possessed a different idea, but 

 further experience and study of the subject 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 northward red is the preponderating colour, 

 gradually changing into grey as you get into higher lati- 

 tudes, that changing to white as you approach the Arctic 

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



GREY WOLVES. 



and his covering scant that of the red animal similar but 

 not so much so, while the grey is well provided with an 

 abundant fur, but not equal in quality or texture to the 



