Section Second 



PROTECTION OF FORESTS AGAINST INJURIES DUE TO 

 ORGANIC AGENCIES. 



CHAPTER I. 



DAMAGE CAUSED BY PLANTS. 



36. Different kinds of Damage arising from the Same. 



Vegetation or plants may be injurious to woodlands in two 

 ways, either by covering the soil densely as noxious forest weeds 

 overtopping and interfering with the growth of young timber crops, 

 or as parasites and fungi growing on or in trees, and endangering 

 their well-being and not infrequently their existence. The draw- 

 backs and injuries arising from noxious growth will accordingly 

 be considered under these two headings. 



A. Noxious FOREST WEEDS. 



37. Definition ; Disadvantages, limited Advantages. 



Under Forest weeds are comprised all such vegetation or growth, 

 commonly occurring in large quantities in woodlands, as tends to 

 prevent the natural reproduction or the artificial cultivation of the 

 various species of forest trees, or as interferes with their normal 

 growth and development. 



The disadvantages which may accrue to woodlands from such 

 forest weeds vary according to the nature of the latter, and to the 

 circumstances under which they are naturally developed. 



Natural reproduction is often not infrequently for the most 

 part rendered impossible or out of the question when forest 

 weeds cover the soil densely ; and essential difficulties in the 



