go THE TREES OF AMEEICA. 



years ; in Scotland it has grown to the height of seventy feet in sixteen years. 

 Male trees should be selected for cultivation. The cuttings of this tree root 

 freely. The necklace poplar gets its name from the aments resembling a neck- 

 lace of beads. It has long been introduced into Europe, where it is cultivated 

 to a considerable extent. It is called there the Virginian Poplar, and Swiss Poplar, 

 the last name being derived from the fact that it has been extensively propagated 

 in Switzerland. It is also called Black Italian Poplar in England, from its hav- 

 ing been carried there from Italy. 



There is another poplar found in Canada and the New England states. This 

 is the true Balsam Poplar. It very much resembles the Balm of Gilead. It 

 diflfers from this species in its leaves being smaller, with uniformly rounded bases. 

 It has been pretty widely propagated in York county, Maine. Emerson found 

 it growing naturally on the land of George Thompson, near the Kennebunk 

 river. From here it has been carried into the neighboring towns. 



The American Aspen, which is a favorite species with some, does not ap- 

 pear to do well in exposed, windy situations. At Nahant it suffers very much 

 from the wind, and, judging from the specimens there, would by no means be 

 considered a beautiful tree. There are, however, specimens in our neighborhood 

 which are very fine. Some of the introduced species we hope to notice on a 

 future page. 



