Apr. 15, 1925 
Use of Liability Ratings in Forest Fire Protection 
719 
• Yellow pine (127 fires) 
© Douglas fir - Larch (225 fires) 
X Lodgepole (92 fires) 
*Spruce-Cedar-hemlock (54fires) 
t Alpine (62 fires) 
+ Grass (72fires) 
Fig. 20.—Western Montana (Region 2): Relation 
between size of fire and cost of suppression 
Note.— Data for Region 3 used also for yellow 
pine, spruce-cedar-hemlock, alpine, and grass. 
