16 



BULLETIN 316, IJ. S. DEPARTMENT OF AGRICULTURE. 

 Table 8. — Black willow — Mississippi Valley. 



Diam- 

 eter 

 breast- 

 high. 



Number of 16-foot logs. 



Diam- 

 eter 



inside 

 bark 



of top. 



Basis. 



1 



IS 



2 



2i 



3 



Volume— board feet. 



Inches. 

 14 

 15 



16 

 17 

 18 

 19 

 20 



21 

 22 

 23 



24 

 25 



26 

 27 

 28 

 29 

 30 



31 

 32 

 33 

 34 

 35 

 36 



40 

 51 



64 

 78 

 94 

 110 

 130 



150 

 170 

 200 

 220 

 240 



270 



69 

 89 



110 

 130 

 160 

 180 

 210 



230 



260 

 290 

 320 

 360 



390 

 420 

 460 

 500 

 530 



570 

 600 

 640 

 670 

 710 

 750 



100 

 120 



150 

 180 

 210 

 240 

 280 



320 

 360 

 400 

 440 



490 



530 

 580 

 640 

 690 

 750 



810 



870 



940 



1,000 



1,070 



1,140 



130 

 160 



190 

 230 

 270 

 310 

 350 



400 

 450 

 500 

 560 

 620 



680 

 740 

 810 

 890 

 970 



1,050 

 1,140 

 1,240 

 1,330 

 1,430 

 1,530 



430 



490 

 550 

 610 

 680 

 750 



830 



910 



1,000 



1,090 



1,190 



1,290 

 1,400 

 1,520 

 1,640 

 1,770 

 1,900 



Inches. 

 10 

 11 



12 

 12 

 13 

 14 

 14 



15 

 16 

 17 



17 

 18 



19 

 19 

 20 

 21 

 22 



22 

 23 

 24 

 24 

 25 

 26 



Trees. 



2 



3 

 11 

 9 

 6 

 12 



23 

 25 

 23 

 23 



15 



15 

 16 

 9 



7 

 8 



8 

 3 

 6 

 3 

 1 

 1 



229 



Tables 9 and 10 are similar to Tables 5 and 6, respectively, except 

 in regard to closeness of utilization. Table 9 shows the volume based 

 on diameters breasthigh from 8 to 36 inches and height classes 10 

 feet apart, from 60 to 130 feet, and also the average height of trees 

 of different diameters. The top diameter limit is from 6 inches for 

 the 8-inch trees up to 16 inches for the 36-inch trees. The volumes 

 of trees of average heights are shown in heavy-faced type. Table 

 10 shows the volume based on diameters breasthigh from 8 to 36 

 inches and the number of 16-foot logs per tree, scaled from taper 

 curves, mostly in 16.3-foot logs, with a few shorter lengths where 

 necessary. The stump height is 1 foot. The trees on which both 

 tables are based were scaled with the Scribner Decimal C rule and 

 the tables show what could be taken from them by close utilization. 



