92 STREET PLANNING 



fixed intervals, the natural la'w ceases to operate, and branches which 

 ordinarily would have dwindled away maintain their existence indefinitely. 

 The result is that the trunk is seen after the annual lopping to support a 

 swarm of branches mostly of the calibre and general aspect of bean-poles. 

 A gradual reduction of these to one-half, or even one-third, by removing 

 them right back to the trunk, and thus encouraging a lateral branching in 

 those that remain, would considerably improve the winter aspect of 

 many trees. 



Every wound made by the saw should be coated over with ordinary 

 coal-tar before it is left, and this should be renewed as often as necessary 

 until the wound is covered with new bark. With soft wooded trees like 

 lime and horse-chestnut, this treatment is especially important. (For 

 this and similar questions, see chapter on PRUNING.) 



