20 BULLETIN 316, U. S. DEPARTMENT OF AGRICULTURE. 



Table 12. — Solid content in cubic feet of stacked cords from trees of different sizes. 



Diameter 

 of trees. 



Solid con- 

 tent of a 

 cord. 



Inches. 

 i Brush... 



3 to 10... 

 10 to 15... 

 15 to 20... 

 20 to 25... 

 25 to 30... 



Cubic feet. 

 53 

 75 

 88 

 91 

 93 

 91 



1 Used in revetment work along Mississippi River; includes trees from 1 to 5 inches in diameter. 

 IMPORTANCE OF CLOSE UTILIZATION. 



Table 13 gives, for average trees, loss in board feet and percentage 

 of loss through imperfect utilization. Column 2 shows the average 

 height of trees of different diameters. Column 3 is the cubic-foot 

 content for trees of this size as given in Table 11. Column 4 is the 

 board-foot content of the same trees as given in Table 5, showing 

 wasteful utilization. Column 5 is the board-foot content of the 

 same trees taken from Table 9, showing close untilization. Column 

 6 is the difference between wasteful and close utilization in board feet, 

 and column" 7 gives the percentage of loss in board feet resulting 

 from imperfect utilization. The difference runs from 25 per cent 

 in the 14-inch trees to 40 per cent in the 36-inch trees. 



Table 13. — The loss in board feet of the willow timber left in the woods. 











Volume. 







Diame- 



Height. 



Cubic 









Per cent 









ter. 



content. 



Close 



Wasteful 





of loss. 









utiliza- 



utiliza- 



Loss. 











tion. 



tion. 











Cubic 



Board 



Board 



Board 





Inches. 



Feet.. 



feet. 



feet. 



feet. 



feet. 





8 

 9 

 10 



11 

 12 

 13 

 14 



58 

 65 

 71 



76 

 81 

 86 

 90 



10.9 

 16.1 

 19.9 



27 

 32 

 41 

 48 



19 

 42 

 56 



89 

 110 

 170 

 200 





19 

 42 

 56 



89 

 110 

 170 



50 

























150 



25.0 



15 



93 



55 



230 



170 



60 



26.1 



16 



96 



68 



300 



210 



90 



30.0 



17 



98 



77 



340 



240 



100 



29.4 



18 



100 



87 



390 



270 



120 



30.8 



19 



101 



96 



440 



300 



140 



31.8 



20 



103 



107 



490 



330 



160 



32.7 



21 



104 



118 



550 



370 



180 



32.7 



22 



105 



139 



670 



440 



230 



34.3 



23 



106 



152 



740 



490 



250 



33.8 



24 



107 



166 



810 



530 



280 



34.6 



25 



108 



180 



890 



580 



310 



34.8 



26 



109 



195 



970 



630 



340 



35.1 



27 



109 



210 



1,060 



680 



380 



35.8 



28 



110 



226 



1,150 



730 



420 



36.5 



29 



110 



242 



1,240 



790 



450 



36.3 



30 



111 



259 



1,330 



840 



490 



36.8 



31 



111 



277 



1,430 



900 



530 



37.1 



32 



112 



295 



1,530 



950 



580 



37.9 



33 



112 



314 



1,630 



1,000 



630 



38.7 



34 



113 



333 



1,740 



1,060 



680 



39.1 



35 



113 



353 



1,840 



1,120 



720 



39.1 



36 



113 



373 



1,950 



1,170 



780 



40.0 



