is but little less than the total number. True, 

 lightning does occasionally set a forest on fire; 

 I have personal knowledge of a number of such 

 fires, but I have never known lightning to set 

 fire to a green tree. Remove the tall dead trees 

 from forests, and the lightning will lose the 

 greater part of its kindling. 



In forest protection, the rivers, ridge-tops, 

 rocky gulches, rock-fields, lake-shores, meadows, 

 and other natural fire-resisting boundary lines 

 between forests are beginning to be used and 

 can be more fully utilized for fire-lines, fire- 

 fighting, and fire-defying places. These natural 

 fire-barriers may be connected by barren cleared 

 lanes through the forest, so that a fire-break 

 will isolate or run entirely around any natural 

 division of forest. With such a barrier a fire 

 could be kept within a given section or shut out 

 of it. 



In order to fight fire in a forest it must be 

 made accessible by means of roads and trails; 

 these should run on or alongside the fire-barrier 

 so as to facilitate the movements of fire patrols 

 or fire-fighters. There should be with every for- 



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