13 



The sweet gum is a native further south, Massachusetts appearing 

 to be a Httle too far north for its best development, as it is often 

 subject to winter killing and frost cracks. 



Fine specimens of our native sycamore may often be seen on 

 lawns and near roadsides, but it is seldom planted as a street tree 

 with us. It is severely affected with a leaf-spot fungus (Gkeospor- 

 ium), which sometimes defoliates two-thirds of the tree. The younger 

 twigs have been known to winter kill badly, but the tree will stand 

 a great deal of hard usage and neglect. 



The white ash grows fairly rapidly and often makes fine avenues. 

 In poor, dry soil, 

 however, it is likely 

 to be attacked by 

 borers and scale in- 

 sects, and has suffered 

 of late years from ex- 

 tremes of weather. 



The scarlet oak is 

 one of our most beau- 

 tiful shade trees. It 

 grows rather slowly 

 under ordinary condi- 

 tions, but is being 

 planted more exten- 

 sively than formerly. 

 The beautiful scarlet 

 foliage in the fall is 

 much admired. As 

 a native it is confined 

 largely to dry soil, 

 being associated gen- 

 erally with the yellow 

 or black oak. It is, however, a difficult tree to transplant success- 

 fully. In many cases it has been effectively alternated with some 

 tree of rapid growth, like the Carolina poplar, the poplars being re- 

 moved when the oak has reached a fair size. On country streets 

 and roadsides it should be more commonly planted. 



The red oak is a common tree by roadsides, but is seldom planted 

 on streets. This is a tree of fairly rapid growth, and may be used 



Fig. I. Showing ideal tree-belt. 



