184 FORESTRY IN CANADA. 



(20) The Western Larch {L. oceidentalis), a much larger tree 



with similar wood ; height up to 180 feet and diameter 

 3 to 4 feet. Valued for railway sleepers, poles, struc- 

 tural purposes and shipbuilding. 

 The following species are of local importance, and in some cases 

 also for export : — 

 Maples : 



(21) Sugar Maple {Acer saccharum), for the manufacture of 



sugar, and also valuable as timber. 



(22) Silver Maple {A. saccJiarinum). 



(23) Red Maple {A. ruhrum). 



(24) Broad-leaved Maple {A. macroph7jllum). 



(25) Jack Pine {Pinus Banksiana), an eastern species. 



(26) Lodgepole Pine (P. Murrayana), a western species. Both 



these pines will grow on poor sites. 



(27) Beech {Fagus grandifolia), a fairly valuable wood. 



(28) The Rock Elm {Uhnus fulva), valuable wood for waggon 



work. 



(29) The Wild Elm {U. americana), valuable wood for waggon 



work. 



(30) Basswood (Tilia americana), a soft wood, prized for 



joining. 



(31) Aspen {Populus tremuloides), widely distributed ; often a 



weed. 



(32) Balm (P. balsamifera), widely distributed ; often a weed. 



(33) The Western Cottonwood (P. trichocarpa), a valuable 



timber in south-west British Columbia. 



(34) White Ash {Fraxinus americana), a valuable species ; wood 



used in vehicle work. 



(35) White Oak {Quercus alba). 



(36) Red Oak {Q. rubra). The supply of both these oaks is 



almost exhausted. There are 10 other species of oak 

 of less importance. 



(37) The Yellow Cypress {ChamcBcyparis nootJcatensis), a British 



Columbia species, yielding timber of high technical 



value for shipbuilding and joinery ; comparatively 



scarce and scattered. 



A few valuable cabinet and vehicle woods are found in small 



quantities in south-western Ontario, such as Chestnut {Castanea 



