1140 
Journal of Agricultural Research 
Vol. XXVIII, No. 11 
Table I .—Number of living and dead trees , 4 inches diameter breast high and over, 
to the acre 
Plot 
No. 
Aspect 
Species 
Number 
of trees 
at first 
measure¬ 
ment 
Increase 
or 
decrease 
(-)in 
number 
of trees 
New 
trees 
entered 
Number 
of dead 
trees 
Volume of dead 
trees, « 
1 
South... 
Western yellow pine.. 
28.0 
4.2 
4.6 
0.4 
Cu.ft. 
7.7 
Per cent 
0. 82 
2 
North 
_do_*_ 
6.0 
2.4 
2.6 
.2 
11.0 
4.66 
3 
Basin 
_do__ _ . 
7.8 
6.0 
6.0 
.0 
.0 
. 0 
Average (plots Nos. 1 to 
3), cut-over. 
Western yellow pine.. 
13.9 
4.2 
4.4 
.2 
6.2 
1.16 
4 
South... 
29.0 
1.4 
2.0 
.6 
122.9 
2.74 
Douglas fir. __T_ _ __ __ 
3.6 
. 2 
. 2 
.0 
.0 
.00 
Total_ 
32.6 
1.6 
2.2 
.6 
122.9 
2.31 
5 
...do. 
Western yellow pine_ 
36.6 
5. 2 
6.0 
.8 
110. 6 
2.57 
Douglas fir_I_ 
3.6 
.0 
.0 
.0 
.0 
.00 
Total.. 
40.2 
5.2 
6.0 
.8 
110.6 
2.33 
6 
...do. 
Western yellow pine. 
21.0 
3.2 
3.6 
.4 
94.8 
2.86 
Douglas fir_T... 
2.6 
-.2 
.0 
. 2 
10.8 
5.76 
Total. 
23.6 
3.0 
3.6 
.6 
105.6 
3.01 
7 
...do. 
Western yellow pine_ ._ 
32.6 
.8 
1.6 
3.0 
1.4 
198. 2 
7.93 
.00 
Douglas fir_—.. 
.0 
.0 
.0 
.0 
Total... 
33.4 
1.6 
3.0 
1.4 
198.2 
7.31 
Average (plots Nos. 4 to 
32.4 
2.8 
3.7 
.9 
134.3 
3.30 
8 
Basin... 
ijf virgin. 
Western yellow pine__ 
27.4 
1.2 
1.4 
. 2 
57.0 
1.43 
Douglas fir_I.. 
11.0 
—.4 
.0 
. 4 
99.8 
7.76 
Total.. 
38.4 
.8 
1.4 
.6 
156.8 
2.98 
9 
...do_ 
Western yellow pine_ 
21.6 
5.4 
6.0 
. 6 
78.8 
2.81 
1.45 
Douglas fir_J.. 
19.4 
—.4 
.4 
.8 
26.7 
Total. 
41.0 
5.0 
6.4 
1.4 
105.5 
2.27 
10 
...do. 
Western yellow pine_ 
26.4 
—1.8 
.2 
2.0 
64.6 
1.90 
.00 
Douglas fir_I. 
27.0 
.4 
.4 
.0 
.0 
Total. 
53.4 
-1.4 
.6 
2.0 
64.6 
1.25 
11 
...do_ 
Western yellow pine__ 
16.0 
— 1.6 
.8 
2.4 
238.9 
8.71 
Douglas fir.I. 
43.4 
.2 
.4 
.2 
7.8 
.20 
Total. 
59.4 
-1.4 
1.2 
2.6 
246.7 
3. 73 
Average (plots Nos. 8 to 
11), virgin. 
Western yellow pine_ 
48.0 
.8 
2.4 
1.6 
143.4 
2.64 
12 
North... 
16,0 
—.4 
.2 
.6 
326.8 
12.88 
Douglas fir _ _ 
38.0 
-2.0 
4 
2.4 
148.4 
6. 20 
Total... 
54.0 
-2.4 
.6 
3.0 
475.2 
9.63 
13 
...do. 
Western yellow pine... 
15.8 
3.8 
4.6 
.8 
70.4 
3.69 
Douglas fir_.1 __ 
109.4 
4.8 
9.2 
4.4 
36.4 
.90 
Total. 
125.2 
8.6 
13.8 
5.2 
106.8 
1.80 
14 
...do. 
Western yellow pipe.. 
22.8 
—.4 
.6 
1.0 
70.2 
2.44 
Douglas fir... 
30.6 
2.8 
3.8 
1.0 
47.3 
4.24 
Total... 
53.4 
2.4 
4.4 
2.0 
117.5 
2.94 
15 
_do_ 
Western yellow pine. 
6.2 
1. 8 
1.8 
. 0 
.0 
.00 
Douglas fir_T__ 
57.2 
4.2 
5.8 
.1.6 
63.3 
2.36 
Total... 
63.4 
6.0 
7.6 
1.6 
63.3 
1. 71 
Average (plots 12 to 15), 
virgin. 
Western yellow pine. 
74.0 
3.6 
6.6 
3.0 
190. 7 
4.11 
16 
...do. 
24.2 
2.9 
3.6 
.7 
81.5 
3.19 
Average (plots Nos. 4 to 16),& 
virgin: 
Western yellow pine_ 
23.0 
1.9 
2.8 
.9 
110.0 
3. 82 
Douglas fir.. 
21.7 
.6 
1.3 
.7 
27.5 
2.13 
Total.... 
44.7 
2.5 
4.1 
1.6 
137.5 
3.30 
a This includes only those trees which died since the plots were established. 
b Averages weighted by plot areas for total area of 80 acres. 
