126 FOREST TREES. 
hold to nails, and is not liable to split or warp. In 
England and Belgium it is commonly used by turn- 
ers for bowls, trays, etc. In the South of France it 
is employed for the floors and wainscots of houses; 
and in Paris, for the cases in which goods are packed 
. for exportation.” 
“Michaux recommends this species as the best sub- 
stitute for the Tulip Tree, and advises its cultivation 
in the United States. It is undoubtedly superior to 
any of our native Poplars, and merits the attention 
of planters, more particularly on the plains towards 
the Rocky mountains. It is propagated with greater 
ease and rapidity than the Tulip Tree; it grows more 
rapidly, and will endure a colder climate. It may be 
propagated by slips, suckers, or by branches five or 
six feet long and two or three inches in diameter. 
When the latter are used, the larger end should be 
sharpened by a sloping cut on one side to expose the 
bark, and set fifteen or eighteen inches in the ground. 
The disposition of the tree to sucker would be no 
objection in forest culture. 
Populus dilatata, the Lombardy Poplar, is well 
known, and has been introduced everywhere as an 
ornamental tree. In this country it is of little value 
for any other purpose, and not worth much even for 
that. 
PRUNUS—PLUM CHERRY. 
Natural Order, Rosaceae. 
Calyx, five-cleft; petals, five, spreading; stamens, 
fifteen to thirty; ovary with two pendulous ovules; 
berry, fleshy; the stone smooth and even. 
