112 LANDSCAPE GARDENING 



plants. If the problem were of horticultural em- 

 phasis, the accent would probably be achieved by 

 varying shapes, sizes, or colors (Fig. 24). 



Planting is divided into two classes, according 

 to its use, whether for beauty alone or for more 

 practical purposes. These classes are called the 

 esthetic and the economic. 



In the economic class, plant material is em- 

 ployed for strictly utilitarian purposes, beauty 

 being a secondary consideration. It subdivides 

 large schemes, taking the place of more artificial 

 barriers, and screens objectionable features, so 

 that utilitarian buildings, service courts, and other 

 features which are not essentially attractive may 

 be present where they are most needed without 

 marring the general beauty of the scenery. Eco- 

 nomic planting is accordingly unobtrusive, and 

 cannot afford to attract direct attention to itself, 

 as in so doing it would disclose the presence of the 

 object which was to have been screened. 



Where plants are used in an esthetic way they 

 fall into three classes of treatment : first, they may 

 be employed to aid in an architectural scheme, be- 

 ing interesting chiefly on account of their form, as 

 in the carrying out or emphasizing of architectural 

 lines ; secondly, for the interest of the plant itself, 



