108 
LANDSCAPE GARDENING, 
should, in all scenes where an expression of peculiarly 
irregular kind is not aimed at. 
The larch, to which we shall hereafter recur at some 
length, may be considered one of the most picturesque 
trees of this division ; and being more rapid in its growth 
than most evergreens, it may be used as a substitute for, 
or in conjunction with them, where effect is speedily 
desired. 
Oblong-headed trees show heads of foliage more length- 
ened out, more formal, and generally more tapering, than 
a | round-headed ones. They differ from spiry- 
Sk A topped trees in having upright branches instead 
^ ^ of horizontal ones, and in forming a conical or 
'headed ?reesT pyramidal mass of foliage, instead of a spiry, 
tufted one. They are mostly deciduous; and approaching 
more nearly to round-headed trees than spiry-topped ones 
do, they may perhaps be more frequently introduced. 
The Lombardy poplar may be considered the representa- 
tive of this division, as the oak is of the first, and the 
larch and fir of the second. Abroad, the oriental cypress, 
an evergreen, is used to produce similar effects in 
scenery. 
The great use of the Lombardy poplar, and other 
similar trees in composition, is to relieve or break into 
groups, large masses of wood. This it does very 
effectually, when its tall summit rises at intervals from 
among round-headed trees, forming pyramidal centres 
to groups where there was only a swelling and flowing 
outline. Formal rows, or groups of oblong-headed trees, 
however, are tiresome and monotonous to the last degree , 
a straight line of them being scarcely better in appearance 
than a tall, stiff, gigantic hedge. Examples of this can bo 
