Description of Trees 



159 



down below the soil filled in. This treatment must be 

 repeated each season to be a continued success. 



Slippery-elm (Ulmus fulva). This species is of a broader 



FIG. 91. Silver Maple (Acer saccharinum) . (Green.) 



growth with larger leaves, but not quite the graceful form 

 of the white elm, nor is it quite so large, but a valuable 

 tree under some conditions. 



European Elm (Ulmus campestris). More upright and 



