44 LAWN AND SHADE TREES. 



peculiar green foliage in summer. In ordinary grounds it forms 

 only a tree of moderate size ; but in rich strong soils, and near 

 water, it makes a large spreading tree. It is not at all suited 

 for planting in parks or for bordering avenues or streets, but 

 may be sometimes introduced in cemeteries, and especially 

 because that it will bear to have its roots and branches cut back 

 to any extent almost without appearing to affect its health or 

 vigor. 



The white willow salix alba has of late years been frequently 

 used in some portions of the Western States for forming hedges 

 and screens. It is of rapid growth, and when permitted to grow 

 by itself, forms quite a large tree. It also may be sparsely intro- 

 duced where light and airy groups are desired. 



