APPENDIX. 
Table 11. — Volume table for Sitka spruce in Oregon and Washington. 
This table is based on the measurement in 1914 and 1919 of 450 felled Sitka 
spruce (Picea sitchensis) trees, grown in fully stocked stands, averaged for all 
sites and seven localities at elevations from sea level to 1,200 feet, and from 
southern Oregon to northern Washington. Trees were scaled by Scribner 
Decimal C rule to a top diameter of 10 inches inside bark ; actual height of stump 
was used (it averaged 8 feet) ; logs were scaled in 32-foot lengths and less, plus 
an allowance of 0.5 foot for trimming. The table was constructed by the frustum 
form factor method and volumes curved. Trees are classified according to their 
diameter outside bark at 1 foot above pronounced basal swell, which was found 
to average 8 feet above ground. No allowance is made for defect or breakage. 
Breakage in 184 trees amounted to less than 2 per cent of merchantable volume. 
Aver- 
age. 1 
Number of 32-foot logs. 
Diam- 
2 
2* 
* 
H 
« 1 
4 
5 
5i | 6 
6* 
7 | 7} 
Basis. 
eter 
above 
Total height ir 
feet. 
swell. 
112 
128 
142 
158 
173 
188 
202 
217 | 231 
*!] | 
Volume In board feet in tens. 
Inches. 
12 
5 
12 
19 
26 
40 
58 
83 
108 
140 
178 
219 
269 
317 
374 
431 
493 
558 
622 
692 
768 
842 
916 
998 
1,081 
1,169 
1,250 
1,334 
1,423 
1,514 
1,609 
1,862 
2,126 
2,412 
2,714 
26 
28 
30 
34 
39 
45 
51 
56 
No. 
trees. 
14 
16 
41 
46 
53 
60 
69 
78 
88 
98 
110 
123 
18 
59 
69 
79 
90 
102 
115 
130 
144 
158 
174 
191 
208 
224 
239 
255 
20 
83 
96 
109 
123 
139 
158 
175 
195 
215 
237 
259 
283 
309 
335 
364 
395 
.... 
■w 
22 
Ill 
129 
147 
167 
188 
210 
234 
258 
283 
310 
338 
369 
400 
433 
466 
503 
538 
24 
14 
26 
172 
195 
220 
246 
273 
302 
330 
362 
394 
429 
464 
502 
542 
584 
626 
673 
718 
764 
811 
860 
911 
198 
226 
254 
283 
314 
346 
379 
415 
452 
491 
532 
576 
622 
668 
718 
769 
821 
875 
930 
987 
1,045 
1,107 
1,168 
24 
28 
255 
287 
321 
355 
382 
430 
469 
511 
554 
601 
650 
702 
755 
810 
868 
926 
988 
1,051 
1,115 
1,182 
1,252 
1,323 
1,509 
1,707 
22 
30 
27 
32 
358 
406 
437 
479 
523 
570 
619 
671 
726 
783 
842 
904 
968 
1,034 
1,102 
1,172 
1,246 
1,320 
1,397 
1,474 
1,680 
1,904 
2,148 
2,424 
31 
34 
24 
36 
30 
38 
25 
40 
31 
42 
25 
44 
686 
742 
802 
866 
932 
999 
1,069 
1,147 
1,220 
1,295 
1,373 
1,454 
1,539 
1,630 
1,862 
2,102 
2,374 
2,656 
13 
46 
26 
48 
881 
951 
1,022 
1,096 
1,173 
1,253 
1,334 
1,418 
1,505 
1,597 
1,690 
1,786 
2,037 
2,301 
2,586 
2,891 
1,278 
1,366 
1,455 
1,545 
1,638 
1,734 
1,833 
1,933 
2,199 
2,495 
2,814 
3,139 
20 
50 
19 
52 
18 
54 
13 
56 
i 
10 
58 
8 
60 
5 
62 
7 
64 
4 
66 
7 
68 
10 
70 
4 
75 
7 
80 
4 
85 
2 
90 
2 
450 
When trees are not tallied by number of logs, use this column. 
33 
