1 i 4 FOREST DISTRIBUTION 



laivh and Dourlas spruce on northern slopes to the marked 

 Parifir Coast Humid Transition of the northwestern valleys 

 when- the strongest mesophytic conditions of the region prevail. 

 The main body of the forests on the mountain sides belongs to the 

 Canadian zone and consists largely of lodgepole pine, spruce, 

 larch, \\hitebark pine and alpine fir. The Hudsonian Zone is 

 nowhere clearly delimited from the Canadian and most of its 

 species make up a large part of the forests between 5,000 and 

 10,000 feet. However, at the higher elevations the alpine fir, 

 Engelmann spruce, and whitebark pine are the principal trees. 

 though of inferior size and form owing to the severe conditions 

 there found. 



