PRUNING DISEASED TREES 65 



Gardens and Regent's Park, a decided change 

 for the better has been brought about by the 

 careful pollarding of all dangerous and un- 

 healthy trees, though in both cases there was 

 at the time a public outcry at the dastardly 

 treatment to which the trees were being 

 subjected. Time, however, has proved that 

 the Park authorities were justified in their 

 action. By the Broad Walk in Regent's Park, 

 about one hundred elm trees that years ago 

 had been damaged by lightning and storms and 

 become the prey of numerous injurious insects 

 were attended to in the matter of pruning and 

 pollarding. Usually, injuries to tree stems 

 cover but a small portion of the surface, but 

 in the case of such as have been struck by 

 lightning, the damage in many instances ex- 

 tends for twenty to thirty feet along the trunk 

 and for various widths up to nearly two feet, 

 not only the bark being ripped off, but the 

 wood in not a few cases receiving injuries as 

 well. In this particular instance, many of the 

 elms had become positively dangerous to the 

 public owing to the injuries they had received, 

 and it was found necessary, in order to prevent 



