104 STATE BOARD OF AGRICULTURE. 



show off to best advantage it ijeeds considerable room. No cvergreeu will make 

 a screen quicker than the white pine. The bark on young trees is remarkably 

 smooth and free from cracks until about twenty years old. As the leaves only 

 hang on for two summers they are all on young limbs, which is quite likely to 

 make the tree appear thin, especially if it grows rapidly. The lower limbs 

 srenerallv die or remain shorter than those above them unless tlie tree is trimmed 

 or cut back. It bears cutting well and is improved by a judicious use of the 

 knife. Young, thrifty trees are extremely beautiful on account of their smooth 

 bark, their long, soft, slender leaves, which are of a light glaucous color. It 

 is very graceful and holds a high rank as an ornamental tree for its many good 

 qualities. This is the only native tree of the State which has its leaves in clus- 

 ters of five. As a back ground it serves as an excellent contrast for some 

 smaller, darker evergreens. It mixes well with deciduous leaved trees, but the 

 young branches will be rubbed off if allowed to touch other trees. The white 

 pine is one of our most hardy trees and thrives in a great variety of soils, even 

 extending into swamps in many places. The slightest stir of air easily moves 

 the long delicate leaves, producing "a constant sighing and moaning like the 

 gentle beating of waves upon a distant shore." The white pine is abundant in 

 the native forest of Canada and the Northern States, especially in Michigan. 

 It is the great source of nearly all of our pine lumber so well known all over this 

 country and in Europe. Some of the trees grow seven or eight feet in diame- 

 ter and over two hundred feet high. At the College a fine tree stands west of 

 Professor Beal's house. This grew naturally on the river bank of the farm 

 and was taken up and planted by President Abbot about the year 18G0, for 

 and in the name of his daughter Mary. It has been trimmed or cut back occa- 

 sionally. Another specimen grows a few rods east of the same house, also two 

 more south of the front door of Dr. Kedzie's house. There are numerous 

 other sj)ecies of pine in the arboretum, all of which are quite young and small. 



PLANE TREE. 



See buttonwood. 



PLUM, CHICKASAW, RED, WILD, YELLOW. 



For samples see arboretum. 



POPLAR, LOMBAIIDY— PopwiMS dilaiaia. 



This well-known stiff spiry tree comes from Europe. 



It grows very fast but soon dies, at least some portions of each tree, produc- 

 ing a dilapidated appearance. It is well that it is not mucli planted. 

 A single small specimen stands in the grove soutliwest of College Hall. 



POPLAR, SILVER. 



See white poplar. 



POPLAR, WniTE-Populus alba. 



This rapid growing tree comes from Europe. 



It spreads badly by the roots. It is not a favorite in well-kept places. 

 One specimen can be seen east of the chemical laboratorv. 



POPLAR, WEEPING CL'T-LEAVED. 



See aspen, large toothed. 



