Apr. 15,1925 
Use of Liability Ratings in Forest Fire Protection 
713 
LEGEND 
• Yellow pine (99fires) 
e Bi# cone spruce slopes (24fires) 
X Chaparral (443 fires) 
H Grass-Sage-Desert (I0Z fires) 
4 Hardwood bottoms (lOEfires) 
Hours Elapsed 
Fig. 14.—Southern California (Region 17): Relation of size 
of fire to time elapsed between discovery and attack 
