3 o 4 THE WILDERNESS OF THE UPPER YUKON 



overflow of migration southward to that region from the 

 Cassiars near Dease River. 



We are familiar with sheep directly north of the Sti- 

 kine River, which come from the Sheslay River region. 

 Here some have the typical color of Stone sheep, but 

 many have so many white hairs intermingled with the 

 gray on the neck that they resemble closely the sheep of 

 the Pelly Mountains, and often very light-colored sheep 

 are found among them. From this region the most unin- 

 terrupted mountain route for sheep to travel is north-east 

 through the Cassiar range, on to the Pelly Mountains, 

 Glenlyon Mountains, and across the Pelly River near the 

 Tay River to the Rose Mountains. 



Directly north of the Sheslay River district are serious 

 barriers of lakes Atlin, Teslin, the Taku Arm of Lake 

 Bennet and numerous other small lakes. Also the moun- 

 tains in that district are in groups, separated by wide 

 valleys, rather than in continuous ranges. Here sheep 

 are comparatively scarce, only small bands occurring in 

 a few of the mountain groups. The last group of moun- 

 tains, west of Atlin Lake, that are inhabited by enough 

 sheep to be called "sheep mountains," are near Big 

 Horn Creek at the south end of the Taku arm of Lake 

 Bennet. Between Teslin River and the Lewes, sheep are 

 very scarce. Throughout this region the sheep vary in 

 color exactly as they do in the Selwyn Rockies present- 

 ing various degrees of color between white and dark gray. 

 Between Big Horn Creek and the Watson River country 

 north of Lake Bennet, the barriers of lakes and wide 

 timbered valleys prevent continuous travel back and forth, 



