SELECTION OF A DIAMETER LIMIT. 39 
The kinds of lumber into which different logs are sawed are deter- 
mined in every mill largely by the character of the orders received 
from day to day. The mill at Hollins cuts regular stock sizes, but 
in addition it cuts special sizes when these are ordered. The saw- 
ing varies, therefore, according to the demands of the market. For 
example, one week a special effort is made to get out railroad timbers; 
the next week fewer railroad timbers and more rift flooring is sawed. 
The work of analyzing the grade sawed from marked trees at Hollins 
extended over a period of about six weeks and gave the results shown 
in Table XVII. 
TasLe X VII.—Average amount of lumber sawed from longleaf pine. 
Diameter breasthigh, inches. 
Grades. SS 
14. 15. 16. ig: 18. 19. | 2. 
| Board jt.| Board jt. Board jt. Board jt. Board jt. Board ft. Board ft. 
| Jett tict a a 6.6 6.9 14.1 26.7 34.3 44.5 56.5 
© Flat flooring} ._............... 27.2 33.6 40.3 46.7 43.0 55.8 | 56.2 
Wemtectemapee ss = 2 es 38. 8 43.7 ebaee 54.5 66.3 55.2 | 57.6 
No. 1 common boards ......... 10.2 20.0 25.7 37.6 50.9 57.7 | 60.4 
No. 2 common boards ........- 10.0 i2 cL 2 -6 0.0 | 4.0 
Dimension d................... 92.6 91.7 99.1; 117.7 137.5 148.7 | 147.8 
Bese aI PETS = 11-2 10.5 10.7 aac 13.6 | 14.2 | 13.2 
Lisy The ICT) Coe Sr res 00.0 00.0 1.0 1.6 3.0 | 2.6 9.8 
CED |e ee a eee 196. 6 207.6 244.8 298. 4 349.2 | 378.7 405.5 
Diameter breasthigh, inches. 
= Grades. a z 
7; a eel 23. 24. 25. 26. 
p0ard jt. | Board jt. Board jt. | Boardjt. | Board ft. Board ft. 
LECECRS Ct to aia 71.2 65. 2 82.5 ig 99.8 138.4 
Minveigoring O___.......-2..2.- 41.6 50.3 47.7 pl. t 53.4 34.9 
L) URGE LI aes ee ee 75.6 88.2 98. 4 99.5 150.8 160.0 
No. 1 common boards.......-..- 86. 2 88.1 119.8 97.5 115.5 141.3 
No. 2 common boards.......--- 4.1 6.3 7.6 30.5 13.1 29.7 
Wimensignd --.__).<....:..-.. 184.4 210.0 226.0 | 225.3 265.3 28.4 
Pee ee ITM DCTS .- 4.22. one oes 14.3 6.5 5.0 11.1 0.0 19.0 
DN 7.8 18.8 40.5 42.8 54.3 57.5 
OUD) Fe SR a Se ie ge ves 485. 2 533. 7 627.5 684.9 752.2 809. 2 
a Includes all grades of heart and sap rift flooring. 
+ Includes all grades of flat flooring. 
¢ Includes first and second clear, and third clear, finishing. 
@ Includes No. 1 common and No. 2 common dimension stuff. 
A close scrutiny of this table will show that the amount of better 
grades advances with the growth of the tree more rapidly and much 
more regulariy than that of the commoner grades. Any sound tree 
will turn out comparatively low-priced products, such as dimension, 
common boards, common flooring, and side square-edge timbers; but 
the tree must have reached some size before it will yield a considerable 
