50 
BULLETIN 234, U. S. DEPARTMENT OF AGRICULTURE. 
Table 23. — Average contents in cubic feet, to a top diameter of from 2 to 3 inches in- 
side bark and in board feet (Scribner Decimal C rule) to a top diameter of 6 inches inside 
the bark, of lodgepole pine trees of various diameters and total heights, Deerlodge and 
Gallatin National Forests, Mont. 
Di- 
ame- 
Total height of trees in feet. 
ter 
breast 
high. 
30 
40 
50 
60 
70 
80 
90 
100 
Ins. 
3 
C.ft. 
1.0 
1.5 
2.1 
2.7 
4.0 
4.8 
B.ft. 
Cu.ft. 
1.3 
1.7 
3.0 
3.3 
5.5 
7.5 
8.9 
B.ft. 
"20 
25 
Cu.ft. 
1.8 
2.2 
4.0 
5.1 
7.3 
9.5 
11.0 
12.5 
14.0 
17.0 
21.0 
Bd.ft. 
Cu.ft. B.ft. 
Cu.ft. 
Bd.ft. 
Cu.ft. 
Bd.ft. 
Cu.ft. 
Bd.ft. 
Cu.ft. Bd.ft. 
4 
1 i 
5 
~"io" 
30 
35 
45 
60 
70 
90 
5.4 
6.0 
:::::: 
l | 
6 
8.0 
11.2 
14.0 
17.0 
20.0 
23.0 
26.8 
30.6 
34.2 
38.4 
42.5 
46.5 
51.5 
56.0 
62.0 
L; 
! | 
7 
9.6 30 
40 
! 1 
8 
11.4 
14.2 
16.6 
19.9 
22.2 
26.0 
30.0 
40 
50 
60 
70 
85 
105 
125 
50 
60 
75 
90 
105 
130 
155 
180 
205 
230 
250 
275 
300 
15.8 
19.1 
23.0 
27.4 
32.0 
37.0 
42.0 
47.0 
52.0 
57.0 
62.6 
68: 
73.0 
60 
75 
90 
105 
130 
160 
190 
220 
250 
280 
315 
350 
385 
..._-::l:;:;t . 
9 
' L. i 
10 
1 , " •■• 
11 
j 
12 
36.0 
42.0 
48.0 
55.0 
61.0 
67.5 
74.0 
80.0 
87.0 
165 
190 
230 
270 
310 
350 
390 
430 
13 
14 
58.0 
65.5 
79.9 
79.0 
86.0 
93.0 
290 
15 
340 
16 
395 
17 
450 
18 
510 
19 
600 
20 
470 lOfl.n 

Table 24 shows the contents in board feet and props of trees of various diameters on 
three different quality sites in the Arapaho National Forest, Colo. In applying this 
table to any given stand, the heights of a few trees of different diameters should be 
measured and compared with the heights given in the table, in order to determine 
the site quality of the stand being measured. If, as estimating progresses, the average 
height of the stand changes materially, new height measurements should be taken 
and the figures applicable to the new site used. This table is based on 1,275 trees 
cut from overmature stands (about 200 years old) of moderate density. The height 
of a tree of a given diameter varies with its age, while the relation between its diameter 
and height, and consequently between its diameter and volume, varies with the 
density of the stand. Height alone, moreover, does not determine site quality. 
For these reasons the table is applicable only to the region in which it was made and 
to stands similar to those in which the figures were secured. Tables based on diameter, 
and total height, or diameter and number of logs, have a much wider application. 
The present table allows 8 per cent of defect for old timber, but if unusually defective 
timber is encountered additional allowance must be made. The volume in board 
feet includes all of the tree from a stump height of 1 foot to a diameter of 6 inches in 
the top; the remainder of the tree down to a diameter of 5 inches in the top is given 
as prop material, expressed in linear feet. 
