TREES IN TOWNS 



47 



because their attractive fruits and flowers are apt to be picked. In 

 this case, the form of the tree is usually spoiled. Examples of trees 

 of this class are Chestnut, Hickory, Horse-Chestnut, Catalpa, Black 

 or Common Locust, Magnolia, Dogwood, Mountain Ash. The Catalpa 

 and Horse-Chestnut are really objectionable because of their mussy 

 habit of dropping flowers, young fruits or bud scales. 



Good street trees stand adverse conditions, are more or less free 

 from insects and diseases and furnish shade, but not too dense; they are 

 long lived, and those which are arching are preferred by many to the 

 more formal globular forms. Prof. Curtis of Cornell University, ad- 

 vises the following trees for various widths of street. 



For narrow streets (less than sixty feet between ' buildings) I 

 the trees should be planted alternately and spaced forty feet apart. 

 The following may be 

 used: 



Pin Oak. A tree of 



medium size, more 



slender than most 



Oaks; one of best 



trees for narrow 



streets. Especially 



likes moisture, but 



will adapt itself to 



other conditions. 

 Green Ash. A small 



but hardy tree. It 



is the species Frax- 



inus pennsylvanica, 



var. lanceolata. 

 Tree of Heaven (Ai- 



lanthus glandulosa). 



This tree is excel- 

 lent for dry paved 



tenement sections of 



cities, enduring 



smoke and dust. The 



wood is brittle and 



the trees are danger- 

 ous when they are 



old. Because the 



flowers of the male 



tree emit a disagree- 

 able odor the female 



form only should 



be planted. 



T? J* "J I. ^ good garden composition. 



J:*Or medium width ^^ ^^.^^ ^^^ i^ ^^^^^ ^f p^j^g ^j-ees and conifers as well as 

 streets (from sixtV deciduous subjects. The arch of Roses, the airy Summer 

 „ ^ .^, „ , house, the flower-fringed water pool and other features 



leet to eighty leet be- here are well placed and excellent 



