26 ORNAMENTAL GARDENING. 



The lack which generally prevails in this respect is inex- 

 cusable in the face of Nature's liberality in providing. 



Those who are interested in the study of trees and 

 shrubs, with a view to making up lists for planting, find 

 that the size to which these attain at maturity, is an im- 

 portant consideration. Hence in the enumeration of the 

 trees in these pages, care is taken to give the sizes to 

 which the kinds attain. A classification as to size is 

 introduced, the different and relative sizes being repre- 

 sented by letters, as shown by figure 1, and the appended 

 explanation. In the descriptions throughout the work, 

 the letters given answer as keys which, by the help of the 

 engraving, lead to a correct idea of individual and rela- 

 tive sizes. 



Let it be understood that in all cases the sizes indi- 

 cated are only approximately correct, as difference of soil 

 and other circumstances have much to do in causing de- 

 viations in the hight of the same species. 



The general plan of arrangement in the following 

 chapter is, to begin with descriptions of large-growing 

 kinds in each genus, and end with the smaller species. 

 No alphabetical classification is here attempted, but for 

 convenience the different kinds are thus arranged in the 

 index. 



To save repetitions of botanical terms (which are 

 usually in parenthesis), the generic name which appears 

 in the head line, is represented by its initials through- 

 out the descriptions of the species of each genus. When 

 there is more than one variety of any species, the abbre- 

 viation var. (thus, var. regalis), precedes the variety name 

 of all that follow the one first given, 



