16 WORKING PLAN, FOREST LANDS IN ALABAMA. . 
sawed out in the mill. These results are printed side by side in 
Table II as an indication of how much the amount of lumber sawed 
from trees of different sizes exceeds the amount calculated by scaling) 
the logs by the Doyle rule. 
TaB_E II.— Volume of longleaf pine, Coosa County tract. 
Diam- Volume, Volume, Diam- Volume, Volume, 
lo eter: by Doyle | by board eter, by Doyle | by board 
| breast- rulein | tally at || breast- rule in tally at 
high. woods. mill. | high. woods. mill. 
Inches. | Board feet.| Board feet.|| Inches. | Board feet.| Board feet. < 
10 iy ae eee ee a | 24 622 685 
iat Ae oe Nee | 25 694 758 
12 Apa ne tee } 26 764 809 
3 | BS lage eee | 27 SUG ELS ee 
14 | in| 18tc|. nes G05 tetas Soe | 
15 142 | 208 || 29 CTS Ofer adicevees, be» 
16 174 245 || 30 L058 een ees 
17 207 | 298 | 31 1 Se eee 
18 245 | 349 || 32 nC a tre eget 
19 293 | 379 || 33 I 00% | See ee 
20 350 | 406 3d (Bo aad EO Te 
21 413 485 | 35 1467 ples, See 
22 480 | 534 || 36). hg. «Lobatse aoe 
23 550 | 627 || 
| HI 
Table III was computed from measurements of trees cut by the — 
jumber company in sections 12, 13, and 18, and by the sawmill in sec- — 
tion 26, in Block I. 
It gives the average age of longleaf pine on a basis of diameter 
breasthigh, and the average diameter breasthigh, on a basis of age. | 
This table was used in computing the future yields both for the Coosa 
County and the Bibb County tracts. 
TaBLe II].—Diameter growth of longleaf pine, Coosa County tract. 
Age ona basis of di- | Diameter breasthigh, Age on a basis of di- Diameter breasthigh, 
ameter breasthigh. on a basis of age. | ameter breasthigh. on a basis of age. 
: [cae meee ee i 
Diameter. | age. | age. —| Piametet |) DIametI Ay eer | Tce grees 
Inches. | Years. | Years. | Inches. | Inches. | Years. Years. Inches. ; 
1 Bg sig ean eee eee | Tech, <9 160 20.6 
2 25 Pea 1.4 Wea 126 170 2175 
3 aay 30 2.8 18 | 135 180 22.4 
4 a7 | 40 4.5 19 | 145 190 23.2 
esl 43 | 50 6.2 20 | 155 200 24.0 
6 49 | 60 7.9 21 165 210 24.7 
7 54 | 70. | 9.6 20 175 220 25.4 
8 60 | 80 11.2 23 187 230 26.0 
9 | 66 90 | 12.6 || 24 200 240 26.7 
10 | DS) 100 14.0 25. | 215 250 PY 
AT 79 110 | 15.2 26 | 230 260 27.9 
12 | 8 120 16.3 || 27 245 270 a) 
13°] 93 130 174 | 28 261 280 29.1 
14 100 140° | 18.5 29 978 | 290 29.7 
15 | 108 150 A9K6 7) 30 295 300 30.3 
hari 
