1906] 



LECTURE. 



43 



it makes a tree that stands very high in value for that purpose. 



For maples we have the ash-leaved, silver, sugar, scarlet and 

 Norway. The lower branches of the Norway spread out too 

 much and both the Norway and the rock maple give too dense 

 shade for city planting but outside the city there is no objection 

 to the maple. The trees should not be planted less than 50 feet 

 apart, though you do not get shade effects so soon as with 

 thicker planting. 



Within the last two or three years the pin oak, red, white 

 and scarlet oak have all come in for street planting. The pin 

 oak and red oak are both good trees and they grow as rapidly 

 as the maples after the first four or five years and will thrive 

 where some other trees will not. 



The oriental plane has been highly recommended. It is a 

 handsome tree but is subject in long winters to winter kill. 



Where wet and moist conditions prevail the willow grows 

 rapidly and can be used where other trees would not thrive. 



The American linden I can hardly recommend for street pur- 

 poses and the horse chestnut and American chestnut are also 

 better omitted, the horse chestnut because of its blossoms 

 that attract the small boy and because its tendency to litter the 

 ground causes complaint. 



We have now covered the principal street trees suitable for 

 street shade purposes. 



List of trees for street shade purposes : 



Ash, American White, 



European (impractical). 



Elm, American, 



European varieties. 



Allan thus (city). 



Chestnut, 



Honey Locust, 



Horse Chestnut. 



Linden, American, 

 European. 



Maple, Ash leaved. 

 Silver, 



Maple, Sugar, 

 Scarlet, 

 Norway. 



Oak, Pin, 



Scarlet, 



Red, 



White. 



Plane, Oriental, 

 American. 



Poplar, Carolina. 



Willow, Black. 



