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grower, it is thus seen to be, for a certain time at least, 

 unaffected by its inimical surroundings. The variegated 

 variety would seem from recent experiments to be preferable 

 and better adapted for smoky localities than the normal form. 



The Horse Chestnut {Msculus Hippocastanum) and the 

 English Elm (Ulmus campestve) may be seen in a fairly 

 satisfactory way in many town parks, but only where they 

 are not exposed to smoke and soot to any great extent. In 

 confined spaces both these trees soon show signs of distress, 

 the points of the branches gradually becoming unhealthy, 

 and the trees ultimately dying off prematurely. Taking 

 everything into consideration, neither of these trees can be 

 recommended for planting in smoky districts, though in the 

 more open parts, as in Hyde and Regent's Park, they last for 

 a long time, and attain a good old age. 



The Birch, Walnut, Hornbeam, and one or two 

 kinds of Willow will succeed in the less smoky parts of a 

 town ; but they are not to be recommended for planting 

 where the air is constantly impregnated with soot and dust. 



The Mountain Ash, or Rowan Tree (Pyrus aucuparia), 

 has proved itself to be a valuable small growing tree for 

 planting in urban districts. It is also a tree of great beauty, 

 whether in flower or fruit, one that grows almost anywhere, 

 and with a minimum of attention, in many town streets 

 where the air is vitiated with fumes, the mountain ash grows 

 with great freedom. 



The Alder (Alnus cordifolia). — In this we have a good 

 addition to the few trees that are really suitable for town- 

 planting, for it grows with vigour, and retains much of its 

 fresh, spring-tide greeness in very smoky and impure 

 localities. Of hardy constitution, and unusually strong 

 growth, it seems to defy the sooty emanations from 

 hundreds of chimneys in two, at least, of our largest centres 

 of industry. 



The Bird Cherry (Cerasus Padus) may be classed 

 amongst the most valuable of our town trees. It is a robust- 

 growing and bright-flowering small tree. Few soils come 

 amiss to it, and even where it is hemmed in by taller 

 growing trees and constantly subjected to their drip, it grows 

 and blooms with the greatest of freedom. In many of the 



