72 



to attain a height of 30 metres l possesses no 

 interest from a forestal point of view. 



2. Acer negundo. 

 The same may be said of this tree. 



3. Acer saccharinum. 



This species can be successfully raised in all 

 places where other maples grow. With the ex- 

 ception of tolerating a little more shade the sugar 

 maple is so closely allied to the European great 

 and Norway maple that all that is known sylvi- 

 culturally about the latter may be equally applied 

 to the sugar maple. 



4. Betula lenta. 



5. Bet^ila lutea. 



Of these two varieties, the former, Betula 

 lenta, is really only a small growing tree, as 

 distinguished from the latter, a forest tree. 

 Betula hitca, too, is like all other birches as 

 regards its resistance to frost, but in colder forest 

 regions it is substituted by Betula papyrif era. In 

 other respects it is very much like the European 

 birches, with the exception of its timber which 

 is of greater value, and it stands more shade, 



1 From "Rod and Gun in Canada." Out of the forestry 

 section of the magazine, Nov., 1901, p. 18. 



