CHAPTER XI 



PREVENTING DISEASE 



PROTECTIVE and preventive measures in con- 

 nection with the diseases of trees should be 

 the first and main consideration of the wood- 

 man. An injury that would cost but a 

 minimum of time and expenditure to remedy, 

 will in all probability, if neglected, result in 

 the partial or total collapse of a tree. 



Numerous examples are not wanting, in our 

 parks and gardens, of elms and other trees that 

 have, through lack of attention when injury 

 to root, stem, or branch befell them, either 

 become unhealthy through the attacks of 

 insects and fungoid pests, or stagheaded and 

 hollow-stemmed before crumbling to pieces. 



When attended to in time, trees are wonder- 

 fully recuperative when subjected to disease 



or injury, and respond quickly to efficient 



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