256 PRACTICAL FORESTRY 
feet ; diameter, 14 feet +. Mainly northeastern, 
forming forests. Best development north of latitude 
Norway SprRuCE (Picea excelsa). 
50°. Light, dry, stony soils; much smaller in cold, 
wet swamps. Rapid grower. 
10. Wutre Spruce (Picea canadensis Mill.; B. 
S.. P.). Height, 100 feet; diameter, 1$ feet +. 
Mainly northeastern and extending into Rocky Moun- 
tains; forming forests. Like black spruce, but prob- 
ably better adapted to Western planting, being 
hardier. 
