FOREST TREES. 147 
as in the case of the poplar, to remove the bark. The 
wood may be applied to other uses, and the tree is 
unquestionably desirable for planting on farms in 
the open prairies, wherever it is an object to produce 
trees for shelter, and wood for use in the shortest 
possible time. In Maryland and Delaware it is grown 
for making charcoal, which is employed in the manu- 
facture of gunpowder. In Europe ‘the bark is used 
for tanning. 
Salix vitellina, the Golden Willow, is a variety of 
this species, and differs principally in the color of the 
bark, and somewhat more spreading growth. 
2. Salix fragilis—Britile Willow. 
Leaves, lanceolate, taper-pointed, smooth, glaucous 
beneath, slightly silky when young, serrate, with 
inflexed teeth; stipules, half-heart shaped; stamens, 
commonly two. 
This species, which is said to grow to the height of 
ninety feet, is less widely distributed in the United 
States than the White Willow. It is cultivated for 
basket work. A variety, Russelliana (Bedford Wil- 
low), is considered in Great Britain the most valuable 
of the Willows for timber. 
3. Salix Babylonica— Weeping Willow. 
Leaves, lanceolate, acuminate, serrate, smooth, 
glaucous beneath. 
The Weeping Willow is a well known tree, culti- 
vated only for ornament. On the shores of lakes and 
ponds, or beside streams, it is very appropriate, if not 
