TREES OF VARIOUS FORMS. 93 



is of a lighter hue than that of the preceding, yield- 

 ing therefore a less massive effect; but it forms a 

 handsome lawn tree. P. nobilis is a magnificent tree 

 in its native forests on the Columbia river. It has 

 proved itself quite hardy in cold districts of this country, 

 and is a most desii'able tree for ornamental purposes. 

 The Hemlock Spruce is a handsome low tree, approach- 

 ing to the yew in character, but is of a paler green, and, 

 on account of its dwarfish stature, is used principally in 

 the shrubbery. 



The Common Spruce Fir is very extensively planted, 

 and suits a great variety of soils, though it prefers a 

 moist loamy one. "Where it has room and shelter, it 

 grows into a tall, stately, tapering cone. "When young 

 and densely planted it affords a close and effective 

 shelter, and it even forms a good hedge in upland 

 districts. It has a livelier effect in masses than the 

 Scotch fir. P. Menziesii, or Menzies' Spruce, is a very 

 handsome pyramidal tree, vrith a ririd light-green foliage, 

 which, with the silvery lines on the imder side of the 

 leaves, imparts to it a gay and gi'aceful character. It 

 is well adapted for gi'oups and masses in woods and 

 pleasure-grounds . 



P. Moriada, the Himalayan spruce, is a large tree on 

 its native mountains, and in this country it grows freely 

 in a shaded situation and a loamy soil. On light sandy 

 soils, and when exposed to the sim, its leaves are fre- 

 quently browned by the spring frosts. It has the 

 general form of the common spiTice, but is strongly 

 distinguished from it by its glaucous foKage, longer 

 and narrower leaves, and its more slender and pensile 

 branchlets. It is a gi'aceful lawn tree, and it is also 

 well adapted to the woods of the park. It was intro- 



