TREES 289 



and beast and, from a pecuniary point of view, 

 they are a good investment, attracting atten- 

 tion and inviting home-seekers. Fortunately 

 the list from which we can select for this pur- 

 pose is large and varied, but the following are 

 undoubtedly the best, all considered: The 

 American elm {Ulmus Americana); the Eng- 

 lish elm {Ulmus campestris) ; the horse chest- 

 nut {JEsculus Hippocastanum) ; the silver ma- 

 ple {Acer saccharinum) ; the American ash 

 {Fraxinus Americana) ; the buttonwood or 

 sycamore {Platanus occidentalis) ; the maiden- 

 hair tree {Ginkgo biloba) ; the rock or sugar 

 maple {Acer saccharum) ; the Norway maple 

 {Acer platanoides) ; the American beech {Fa- 

 gus ferruginea) ; the white poplar {Populus 

 alba) ; the American linden ( Tilia Americana) ; 

 the European linden {Tilia vulgaris) ; the tree 

 of Heaven {Ailanthus glandule s a) ; the white 

 willow {Salix alba) ; the tulip tree {Lirioden- 

 dron tulipifera) ; the red oak {Quercus rubra) ; 

 and the pin oak {Quercus palustris). 



In the planting of street trees, sanitary and 

 hygienic conditions must be considered. The 

 streets should not be too shaded, nor should the 

 trees themselves be crowded. The minimum 

 distance apart for setting the trees fixed by 



