14 Larch Disease. 



ganised. This may arise from the evils 

 already set forth, or from injudicious thinning ; 

 in some cases there is a cure, but prevention 

 is better. 



Then as we proceed the close observer will 

 detect insect and fungoid pests, and here he 

 will find that nature will often elude the most 

 vigilant watchfulness. Plantations in full 

 health to-day may be attacked and hopelessly 

 destroyed to-morrow. He may combat the 

 attack sometimes if circumscribed in area, 

 but if widespread and sudden he can do but 

 little. 



Let me now enumerate and describe some 

 of the most important diseases to which our 

 forest trees are liable ; and as Larch disease 

 or canker has a wider range than any other, 

 and is attended with the most serious results, 

 I will take it first. 



LARCH DISEASE. 



Larch [Larix Europed) is, as all know, not a 

 native of Great Britain, and is therefore liable 

 to diseases which our one native conifer, the 

 Scotch pine, almost invariably escapes. It 



