20 



trees are much younger the differences between the volumes in the 

 two regions is very marked. 



Table 17. — Volume of the entire stem, Black Hills. South Dakota. 



Diameter 



breast- 

 high. 







Height of tree, feet — 







Basis. 



30. 



40. 



50. 



60. 



70. 



SO. 



90. 



Inches. 

 8 



Cu.ft. 

 5.7 

 6.6 

 7.8 

 9.3 



Cu. ft. 



7.4 



9.2 



11.3 



13.6 



16.4 



Cu.ft. 

 8.9 

 11.5 

 14.3 

 17.4 

 21.1 

 25.0 

 30.0 

 35.0 

 40.0 

 45.0 



Cu.ft. 

 10.2 

 13.5 

 17.1 

 21.2 



2o!e 



30.5 

 35.5 

 40.5 

 46.0 

 51.5 

 57.5 

 63.0 

 G9.0 



Cu.ft. 



Cu.ft. 



Cu.ft. 



Trees. 



43 



48 



28 



24 



30 



56 



140 



157 



167 



91 



83 



52 



38 



23 



11 



9 



3 



1 



9 



10....- 



11 



12 



13 









20.0 

 24.9 

 29.9 

 35.0 

 41.0 

 46.5 

 52.5 

 59.0 

 65.5 

 73.0 

 80.5 

 88.5 

 96.5 







35.3 



41.0 



47.0 



53.0 



59.5 



66.5 



74.0 



82.5 



91.5 



101.0 



112.0 



123.0 



134.5 



145.0 





14 









15 





59.5 

 67.0 

 74.5 

 83.0 

 92.0 

 103.0 

 115.0 

 127.5 

 138.5 

 149.5 

 1*30.0 



16... 



.- 



17 





is..: 





19... 





20 



. 



21 





99 







23 







24. 









25 



| 







Total. 









1 











1,004 













Note. — The small number of trees and the long sections cut cause the form factor to vary irregularly, 

 though within rather narrow limits (0.48 to 0.57") , but the average, 0.53. when applied toa stand of vary- 

 ing diameters, will be within a maximum error of 5 per cent. 



Table 



18.— 



Volume of 



the entire stem. Butte 



and . 



Madera cou 



nties. 



California. 



Diameter 

 breast- 

 high. 









Height of tree, feet— 











Basis. 



50. 



60. 



70. 



80. 



90. 



100. ] 110. 



120. 



130. 



140. 



1.30. 



160. 



Inches. 



12 



.13 



14 



15 



16 



Cu.ft. 



16 

 19 

 22 

 25 



Cu.ft. 

 19 

 23 

 27 

 30 

 34 

 38 

 42 



Cu.ft. 

 23 

 27 

 31 

 35 

 40 

 45 

 50 

 55 

 61 



Cu.ft. 

 26 

 31 

 36 

 41 

 46 

 52 

 58 

 65 

 72 

 79 

 87 

 95 

 103 



Cu.ft. 



30 



35 



40 



46 



52 



59 



67 



75 



84 



92 



101 



109 



117 



126 



135 



Cu.fL Cu.ft. 



Cu.ft. 



Cu.ft. 



Cu.ft. Cu.ft. Cu.ft. 



Trees. 







40 

 47 

 38 

 42 

 24 

 33 

 97 



27 

 26 

 36 

 37 

 46 

 39 

 36 

 40 

 38 

 32 

 42 



8 



5 



2 i 



4 

 4 

 1 

 2 

 2 

 1 

 3 

 1 

 4 

 3 

 1 



2" 













17 







18 



77 

 86 

 95 

 104 

 113 

 123 

 133 

 144 

 155 

 167 

 180 

 194 

 208 



S8 

 97 

 107 

 117 

 127 

 138 

 149 

 162 

 174 

 188 

 201 

 216 

 230 

 246 

 261 











19 













20 





118 

 129 

 141 

 153 

 166 

 179 

 193 

 207 

 223 

 238 

 254 

 270 

 285 

 299 

 313 

 327 

 341 











21 





143 

 155 

 168 

 182 

 195 

 210 

 226 

 242 

 260 

 278 

 295 

 311 

 326 

 342 

 357 

 371 

 386 

 400 

 414 

 428 









22 









23 



24 



25 









197 

 213 



229 

 246 

 264 

 282 

 302 

 321 

 339 

 355 

 372 

 3S8 

 404 

 420 

 437 

 455 

 474 

 495 

 517 

 541 

 566 

 590 

 616 

 644 

 671 







26 



27 ! 











28 1 



29 



30 



31 



32 



i 33...... 







330 

 347 

 366 

 3S4 

 401 

 420 

 439 

 459 

 479 

 502 

 526 

 552 

 580 

 610 

 638 

 666 

 693 

 720 

 746 



358 

 376 

 395 

 414 

 434 

 456 

 477 

 502 

 528 

 560 

 592 

 622 

 649 

 675 

 700 

 726 

 751 

 776 

 802 



' 34 













i 36 





37... ... 





! 38 







39 







40 







41 







1 42 









43 













44 













45 













; 46 













47 













48 



























Total. 





















710 ! 







1 

















Note. — The form factor varies from 0.3S to 0.45. The average, 0.42, will give very good results when 

 applied to a stand composed of a number of diameter classes in the yellow pine-sugar pine belt. 



[Cir. 127] 



