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west of Ontario. The balsam poplar, with larger, 

 pointed leaves, and buds covered with a sticky gum, 

 is almost as widely distributed as the aspen poplar. 



The cottonwood having broad leaves with square 

 base, triangular in outline and coarsely toothed, is 

 found scattered in river-bottoms, in the southern part 

 of both Eastern and Western Canada. There are two 

 poplars, lanceleaf cottonwood, and narrowleaf cotton- 

 wood, with long, narrow leaves, in southern Alberta 

 and Saskatchewan. The black cottonwood on the coast 

 of British Columbia has leaves like the balsam poplar. 

 The wood of poplar is not very valuable and is used 

 for fuel, for making excelsior and pulp and, where better 

 woods are not available, for lumber and various pur- 

 poses. The Lombardy poplar which grows a tall, narrow 

 tree, and the silver poplar, with leaves shaped like those 

 of the maple, green and shiny on top and white and 

 woolly beneath, are introduced from foreign countries. 



