LANDSCAPE GARDENING. 
10 4 
scarcity. Keeping these few principles in his mind, he 
will be able to detect new beauties, and transfer them to his 
own estate ; for nature is truly inexhaustible in her re- 
sources of the beautiful. 
Classification of trees, as to expression. The 
amateur, who wishes to dispose his plantation^® in the 
natural style of Landscape Gardening, so as to produce grace- 
ful or picturesque landscape, will be greatly aided by a study 
of the peculiar expression of trees individually, and in com- 
position. The effect of a certain tree, singly, is often exceed- 
ingly different from that of a group of the same trees. To 
be fully aware of the effect of groups and masses, requires 
considerable study, and the progress in this study may be 
greatly facilitated by a recurrence from groups in nature, to 
groups in pictures. 
As a farther aid to this most desirable species of informa- 
tion, we shall offer a few remarks on the principal varieties 
of character afforded by trees in composition. 
Almost all trees, with relation to forms, may be divi- 
ded into three kinds viz : round-headed trees, oblong or py- 
ramidal trees, and spiry-topped trees ; and so far as the 
expressions of the different species comprised in these distinct 
classes are concerned, they are, especially when viewed at 
a distance, (as much of the wood seen in a prospect of any 
extent, necesssarily, must be,) productive of nearly the same 
general effects. 
Round-headed trees compose by far the largest of these 
divisions. The term includes all those trees which have an 
irregular surface in their boughs, more or less 
varied in outline, but exhibiting in the whole 
[Fig. 26^ ^Rouud-head-' a top or head, comparatively round ; as the 
oak, ash, beech, and walnut. They are generally beau- 
