TABLES RELATING TO PARTS III AND IV 287 
VOLUME TABLE No. 26. DOUGLAS FIR OF THE COAST 
BY THE SCRIBNER DECIMAL RULE 
(U. S. Forest Service) 
Diameter 
at Stump 
Outside 
Bark 
Average 
Number of Thirty-two-Foot Logs 
H 
2 
21 
3 
31 
4 
41 
5 
51 
6 
61 
7 
Inches 
Volume — 
- Board Feet in Tens 
18 
40 
28 
34 
41 
50 
58 
20 
50 
32 
39 
47 
56 
65 
22 
62 
44 
53 
66 
78 
92 
24 
77 
49 
60 
75 
88 
102 
26 
91 
55 
68 
84 
98 
112 
122 
28 
105 
61 
76 
95 
110 
124 
136 
. 30 
125 
66 
84 
106 
124 
141 
157 
32 
145 
92 
115 
138 
162 
182 
34 
169 
100 
125 
149 
176 
203 
36 
195 
120 
138 
164 
192 
227 
247 
38 
228 
183 
212 
253 
278 
40 
270 
228 
2 S 0 
313 
42 
312 
246 
306 
342 
385 
437 
44 
365 
268 
332 
374 
420 
462 
46 
425 
286 
358 
403 
454 
494 
48 
480 
388 
433 
487 
534 
592 
50 
535 
420 
468 
528 
581 
644 
52 
'588 
450 
502 
566 
598 
680 
730 
54 
645 
480 
530 
595 
654 
722 
774 
56 
705 
630 
697 
771 
830 
58 
765 
668 
744 
821 
888 
60 
830 
711 
790 
872 
942 
62 
900 
760 
838 
926 
1009 
64 
972 
808 
886 
985 
1082 
66 
1048 
864 
953 
1066 
1171 
68 
1133 
1030 
1147 
1261 
70 
1226 
1118 
1225 
1345 
72 
1310 
1198 
1312 
1420 
74 
1413 
1285 
1390 
1486 
76 
1515 
1364 
1465 
1556 
Based on 1394 trees measured in logging operations in 
Lane County, Oregon. Diameters, taken outside bark, 
on the stump, which was ordinarily about 4 feet high, are 
closely comparable with the diameter at breast height. 
Trees scaled without deduction for defect or breakage, to 
a point 10 inches in diameter at the top, unless unmer¬ 
chantable to this point. The majority of the logs were 
24 feet long, though the length varied from 16 to 36 feet. 
