Description of Trees 



159 



down below the soil filled in. This treatment must be 

 repeated each season to be a continued success. 



Slippery-elm {llwi{s fnha^. — 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 



