198 ORKAMENTAL GARDENING. 



trees, as they appeared at planting and their size fifteen 

 years later is outlined. Such a condition of things is de- 

 plorable, because wholly without adequate remedy, and 

 of course owes its origin to the fact, that the planter 

 only considered the beauty and the size of the tree at 

 planting, and not its appearance in later years. 



The classification of trees according to the size they 

 reach at maturity, as explained in connection with figure 



I, and the letters throughout the description in Part 



II, will help one to a right idea of the size of trees and 

 shrubs. As a rule, no tree properly belongs in grounds 

 that are too small to admit of its full development or 

 which will intrude too much upon space when full grown. 



In some places where planting is done for shade, an 

 error is seen in the setting of not only larger growers 

 than were needed for the place, but so many of them as 

 to defeat the very idea of comfortable shade, by shutting 

 out the access of cool breezes and retaining the heat of 

 the sun's rays that may penetrate here and there. What 

 is wanted in our hot climate, is not so much excessive 

 shade, as open shade that allows the air to circulate 

 freely through and under the trees. The character of 

 trees has something to do with their forming a comforta- 

 ble shade. For example, the shade of open-headed Silver 

 Maples, Willows, Walnut, etc., is cooler than that of 

 dense, close-headed kinds, for the simple reason that the 

 heads of the former cause but a slight barrier to the 

 entrance of cool breezes underneath. 



As distinct means for increasing variety, the forming 

 of Shrubbery-walks, Rosaries, Pinetums, etc., may be 

 mentioned. These, as their names would imply, consist 

 of a collection of members of the same family, or style 

 of growth, so arranged as to facilitate the study of them 

 and to develop the beauty that springs from bringing to- 

 gether in numbers the different species of the same 

 family. 



