STREET TREES. 



103 



required each season for a number of years to develop good 



tops, while if they had well formed tops in the nursery and were 

 shortened back at planting time much less 

 attention will be necessary. 



In a row of Elms or other trees there 

 will often be found peculiar individual 

 shapes. Some of the trees will take 

 on desirable forms, while others will be 

 spreading and awkward, and perhaps have 

 a tendency to crack in the branches. In 

 some cases a little extra pruning will bring 

 such unfortunates into shape, but often they 

 are incorrigible, and are best replaced by 

 other trees with better forms. 



Protection should always be given street 

 trees as soon as they are set out, and this 

 should consist of something that will pro- 

 tect them from sun-scald, gnawing of horses 

 and whittling by thoughtless boys. A good 

 temporary cover is afforded by wrapping 

 r-~ the trunk with gunny sacking or similar 



Figure 21. Elm street material, but a more desirable protection is 



:ree properly trimmed afforded by a slatted wooden frame or box 



for planting out. for 



