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LANDSCAPE GARDENING. 
air of sameness and formality, and all the spirited effect is 
lost which its sparing introduction among other trees pro- 
duces. The Lombardy poplar is so well adapted to con- 
fined situations, as its branches require less lateral room than 
those of almost any other large deciduous tree. 
It is an objection to some of the poplars, that in any cul- 
tivated soil they produce an abundance of suckers. For this 
reason, they should be planted only in grass ground, or in 
situations where the soil will not be disturbed, or where the 
suckers will not be injurious. Indeed, we conceive them 
to be chiefly worthy of introduction in grounds of large 
extent, to give variety to plantations of other and more 
valuable trees. They grow well in almost every soil, moist 
or dry, and some species prefer quite wet and springy 
places. 
The chief American poplars are the Tacamahaca or Bal- 
sam poplar, ( Populus balsamifera ,) chiefly found in North- 
ern America ; a large tree, 80 feet high, with fragrant 
gummy buds, and lanceolate-oval leaves ; the Balm of 
Gilead poplar, (P. candicans ) resembling the foregoing in 
its buds, but with very large, broad heart-shaped foliage. 
From these a gum is sometimes collected, and used medici- 
nally for the cure of scurvy. The American aspen, (P. 
tremuloides ,) about 30 feet high, a common tree with very 
tremulous leaves and greenish bark ; the large American 
aspen, (P. grandidentata ,) 40 feet high, with large leaves 
bordered with coarse teeth or denticulations ; the Cotton 
tree, (P. argentea , 60 or 70 feet, with leaves downy in a 
young state ; the American Black poplar, of smaller size, 
having the young shoots covered with short hair ; the 
Cottonwood, (P. Canadensis ,) found chiefly in the western 
