TUE ARBORETUM. 303 



CHAPTER XIII. 



THE ARBORETUM. .^ 



Definition — Recent In,tro(]uction — General Idea of Arrangement. 



Sect. 1. Scientific Treatment of the Arboretum — Introductory Re- 

 marks— Dr. Lindley's Classification of the Natural Orders — Ex- 

 planations — Synopsis of Orders and Genera — Application of Prin- 

 ciples — Transference of the System to the Ground. 



Sect. II. Decorative Treatment of the Arboretum — Object in View — 

 Employment of Larger Trees — Lawns — Surfaces Planted — Ever- 

 greens — A.rboretums Attached to Private Residences — Sites in 

 Pleasure-grounds. 



Ak arboretum, as now planted, may be defined to 

 be a collection of hardy trees and shrubs, arranged 

 according to their natural aifinities. The diiferent 

 species and varieties are placed together under the 

 genera, orders, and natural groups to which they be- 

 loncr; and bv this means, their resemblances and dif- 

 ferences are more easily recognized and distinguished — 

 from their being brought into proximity — than they 

 •would be in any promiscuous distribution. The aiGni- 

 ties to which we have alluded are best preserved when 

 the arrangement adopted is that of some one of the 

 botanical systems constructed on the principle of 

 Natural Orders ; and fortunately, these, too, exhibit 

 most conspicuously those more external and prominent 

 characters which are apt to strike the eye of even a 

 casual observer. We have thus a happy union of the 



