COVER TYPE AND FIRE CONTROL 
GRASSLAND-WOODLAND GROUP 
7) 
ky 
& 
6) 
NG 
9 
10) 
9 
o 
S 
fr 
Q 
a) 
ly 
S 
u 
Ww 
0) 
& 
y 
Q 
< 
RS) 
= 
aa 
ey cane ane 
eae eae 
= Seale mye 
PROTECTION SEASON 
FIGURE 5.—Seasonal distribution of general-risk fires per 100,000 acres, by groups, 1911 
to 1920 
38207°—29—3 
