BALSAM POPLAR-AMERICAN ASPEN. 
55 
BALSAM POPLAR, ( Populus balsamifera.') In Flora 
Rossica, vol. 1. p. 67 and 41, is given a figure of a 
Poplar from Daouria, called the Balsam Poplar, which 
does not appear to be our plant. The leaves are wider, 
with shorter petioles. This species stretches into 
eastern Siberia, along the river banks to the peninsula 
of Kamtschatka. 
AMERICAN ASPEN, ( Populus tremuloides, Mich. 
FI. Am., vol. 2. p. 243. P. trepida , Willd.) This ele- 
gant species, of which the leaves, like the European 
Aspen, tremble and vibrate in the faintest breeze, is 
met with west of the Mississippi, in scattering groups, 
chiefly in the ravines of the mountains, w r here springs 
issue out, and in narrow vallies, where considerable 
groups of this tree may be seen into the centre of the 
Rocky Mountain chain, but they here attain a very 
inconsiderable magnitude, being seldom thicker than a 
man’s arm. 
WHITE POPLAR, (P. Alba,) now commonly culti- 
vated with us for ornament, soon attains the magnitude 
of an Oak. This wood, remarkable for its whiteness, 
is generally used in the South of France for wainscot- 
ing and flooring their houses, and in England it is 
employed by turners for a host of small articles and 
utensils of housekeeping. 
The wood of various species of Poplar has been 
employed for dyeing; that of the Lombardy or Italian 
Poplar boiled in water with wool communicates a very 
permanent golden yellow colour; other species, as the 
Black, Virginia Poplar and Cotton-wood give, accord- 
ing to the length of time employed, and the quantity of 
the wood boiled, various shades of colour, as that of 
nankin, muse, the colour of the Vicuna, with other 
shades, and answer conveniently for the ground of other 
colours. 
