or extreme informality, intended to produce certain effects. Many
require an extremely abnormal quantity of labour and others require a
minimum of labour for their average maintenance.
Plate XIV. The list of trees and shrubs which thrive in the congestedcity districts where soil conditions are poor and the air is polluted with smokeand dust, is limited to a few kinds, of which the tree-of-heaven, locust andcatalpa are typical. (See page 119, group XI-A)
Plate XV. An interesting use of hedges to frame one side of the refined for-mal garden. Japanese quince on the left side of the walk, Japanese barberryagainst the right side accented with sheared retinosporas, and buttresses ofJapanese quince and Amoor River privet on the extreme left against the vine-covered wall, form the features of this composition. (See page 124)