742 
Journal of Agricultural Research 
Vol. XXX, No. 8 
Table XI .—Average number of general risk fires on national forests per year per 
1,000 acres, by regions and forest types, 1911-1915 
Forest types 
Region 
Yellow 
pine, 
etc. 
Douglas 
fir, 
etc. 
Lodge- 
pole 
pine 
Fir, 
spruce, 
etc. 
White 
pine 
Sub- 
alpine 
Wood¬ 
land 
Brush 
Grass 
and 
sage 
0 00582 
0.00541 
0.00418 
0.00522 
0.0C522 
0 03146 
. 01015 
.00766 
0.00952 
.00569 
. 01231 
. 01231 
04059 
02391 
. 01843 
. 03113 
0.06294 
.04644 
.01989 
.01989 
! 05188 
02441 
. 01956 
.04806 
. 01859 
- .10937 
. 10937 
01077 
. 01378 
.04203 
. 01378 
07316 
. 10559 
.11850 
.04215 
0.02857 
. 09584 
. 13636 
1 06667 
. 01774 
. 08955 
.04706 
.01048 
. 02179 
.01405 
.03645 
01548 
. 01359 
. 00451 
.00993 
.00601 
. 01333 
! 00630 
.00813 
.02326 
.00327 
.00907 
.00907 
n 
.00420 
.00456 
.00347 
.00071 
.00462 
.00462 
V-* - 
1 
05227 
.01724 
. 01724 
2 
101281 
.03077 
.00682 
.00239 
.00252 
. 01149 
. 01149 
. 01149 
3 
■ . 
. 03333 
.00926 
.00385 
.00077 
.00077 
. 00627 
4 
.00485 
.00306 
.00162 
.00393 
.00393 
.00061 
.00402 
.00402 
ft . 
.02186 
. 02326 
.00980 
.00256 
_ 
.00256 
.00102 
.00221 
. 00495 
L6 
.05064 
.05064 
.00601 
. 07692 
.01119 
.02817 
.04112 
.07752 
7 
05952 
.03604 
.03846 
®. 13194 
.02531 
b . 25641 
Q 
! c 04252 
04252 
.04252 
. 04252 
. 00767 
.00133 
.00133 
19 
1 00717 
.00717 
.00435 
. 00717 
. 0Q717 
. 00421 
.00200 
.00200 
! «. 03806 
1._— 
1 • - 
.03806 
.03806 
. 03806 
. 00374 
.00361 
.00361 
21_— 
<*. 01842 
.00475 
. 
. 06250 
-- 
‘.01081 
.10000 
.10000 
° Hardwood bottoms. Jack pine. 
«»Doubtful. *Hardwood. 
c Same figure for all timber types, because no basis for separating them. 
Table XII .—Total general liability per 
1,000 acres by control periods 
REGION 2—WESTERN MONTANA 
f' Forest types 
> 
1 
• U 
tern yellow 
pine 
glas fir and 
larch 
item white 
pine® 
fl 
.'ft 
ft 
© 
m 
S-i 
tfl 
, 
fl ; 
«e 
3 
§ 
ft 
*3 
• fl 
g 
H 
B 
£ 
o 
A, 
£ 
£ 
'a 
o 
Sh 
p< 
OQ , 
JO 
3 
m 
S'-’ 
O 
Dolls: 
Dolls. 
Dolls. 
Dolls. 
Dolls. 
Dolls. 
Dolls.' 
0.79 
0.24 
3.52 
0.14 
0.14 
0.07 
0.19 
- 
l__ 
1.26 
. 44 
6.10 
.21 
. 17 
.10 
.27 
2.:_ 
3_ 
2. 33 
3.02 
. 85 
1.27 
8.50 
10.51 
.31 
.40 
.21 
.24 
, .12 
.14 
.40 
.50 
4. 
3.65 
1.57 
12.65 
.43 
.28 
.15 
.60 
5_ 
4.28 
1.85 
15.11 
.46 
.32 
.16 
.68 
6___ — 
4.94 
2.07 
17.25 
.59 
.36 
.17 
.75 
7,.— 
5,57 
2. 35 
19. 76 
.91 
.41 
.18 
.84 
8_ 
6.20 
2.69 
23. 41 
1.19 
.47 
.20 
.92 
9. 
7.05 
3.04 
25.55 
1.40 
.52 
.24 
.99 
10.... 
7.90 
3.41 
29.52 
1.62 
.59 
; .42 
1.07 
12_ 
9.50 
4.08 
32.86 
2.07 
.75 
.^5 
1.23 
15_ 
12.46 
5.12 
39.21 
2.87 
.92 
1 .84 
1.53 
20_ 
17.71 
6.78 
52.18 
4.43 
1.34 
! 1.06 
2.09 
« Region 3 figures used for white pine type, be¬ 
cause data for this region are insufficient. 
Table XII .—Total general liability per 
1,000 acres by control periods —Contd. 
REGION 3—NORTHERN IDAHO 
Hour contro l 
Forest types 
Western yellow 
pine 
Douglas fir and 
larch 
Western white 
pine 
© 
fl 
ft 
.© 
'o 
ft 
- © 
bt) 
'O 
O 
Spruce, cedar, fir, 
hemlock 
Subalpine 
Grass and brush 
Dolls . 
Dolls. 
Dolls. 
Dolls. 
Dolls. 
Dolls. 
Dolls. 
V2- — 
0.97 
1.39 
3. 52 
0.42 
0.43 
0.56 
0.30 
1_ 
1.54 
2.54 
6.10 
.57 
.56 
.79 
:44 
2..... 
2.87 
4.76 
8.50 
.81 
.68 
1.02 
.66 
3—1. 
3.68 
5.92 
10.51 
1.08 
.81 
1.11 
.82 
4 .... 
4. ; 41 
7. 65 
12.65 
1.12 
.90 
1.21 
.98 
5_ 
5.22 
8.70 
15.11 
1.22 
1.06 
1.30 
1.09 
6_ 
5.99 
9.45 
17.25 
1.53 
1.15 
1.39 
1. 21 
7-.-.. 
6.75 
10.28 
19. 76 
2.40 
1.31 
1.49 
1.35 
8_ 
7.52 
11.41 
23. 41 
3.07 
1.46 
1.62 
1.49 
9._ 
8.57 
12.22 
25. 55 
3.54 
1.68 
2.00 
1.59 
l5— 
9.68 
13.22 
29. 52 
4.09 
1.93 
3.45 
1.73 
12_ 
11.65 
15.23 
32.86 
5.29 
2.43 
5.34 
1.99 
15_ 
15.08 
18.53 
39.21 
7.17 
2.99 
6. 87 
2.47 
20.... 
21.43 
24.91 
52.18 
11.00 
4.36 
8.68 
3. 38 
