JACK PINE. 



37 



Table 21. — Taper of jacTc vine trees of different d'umuters and heights, shovnng diameter 

 inside oark at different heights above the ground. 



[Based on measiiroincnts by U. II. Chapman in Hubbard County, and a few by J. St. J. Benedict in 

 Cass County, Minn., of trees cut in dense, oven-aged stands. Measurements taken on jack pine in 

 Roscommon County, Midi., indicated the same taper as given in this tabic for trees of different diameters 

 and heights.] 



20-FOOT TREES. 



Diam- 



lli'ight above ground (feet). 























eter 



1 



2 



3 



4.5 



9.15 



17.3 



25.45 



33.6 



Basis. 

























Diameter inside bark (inches). 





Inches. 



















Trees. 



2 



2 



1 9 



1 8 



1 8 



1 4 



4 







9 



3 



3 1 



2 9 



2 8 



2 7 



2 3 



.7 







4 



4 



4 1 



3 9 



3.8 



3.6 



3.1 



1.1 









."i 



5.1 



4.9 



4.7 



4.6 



3.9 



4.1 







1 







6 1 



5 9 



5.7 



5.5 



4.7 



1.7 









7 



7 2 



6.9 



6.6 



6.4 



5.5 



2.0 









8 



8.2 



7.S 



7.6 



7.3 



6.3 



2.3 















14 



30-rOOT TREES. 



2 



2.0 



1.9 



1.8 



1.8 



1.6 



1.2 



0.5 





6 



3 



3.1 



2.9 



2.8 



2.7 



2.4 



1.7 



.7 





22 



4 



4.1 



3.9 



3.8 



3.6 



3.2 



2.2 



.9 





17 



5 



5.1 



4.9 



4.7 



4.6 



4.0 



2.8 



1.1 





7 



6 



6.1 



5.9 



5.7 



5.5 



4.8 



3.3 



1.3 





8 



7 



7.2 



6.9 



6.6 



6.4 



5.6 



3.9 



1.5 





5 



8 



8.2 



7.8 



7.6 



7.3 



6.4 



4.4 



1.7 







9 



9.2 



8.S 



8.5 



8.2 



7.2 



5.0 



1.9 







10 



10.2 



9.8 



9.5 



9.1 



8.0 



5.5 



2.1 











65 



40-FOOT TREES. 



2 



2.0 



1.9 



1.8 



1.8 



1.7 



1.7 



1.3 



0.7 





3 



3.1 



2.9 



2.8 



2.7 



2.5 



2.2 



1.7 



.8 



2 



4 



4.1 



3.9 



3.8 



3.6 



3.3 



2.8 



2.1 



1.0 



41 



5 



5.1 



4.9 



4.7 



4.6 



4.2 



3.4 



2.5 



1.2 



31 



6 



6.1 



5.9 



5.7 



5.5 



5.0 



4.1 



2.9 



1.4 



25 



7 



7.2 



6.9 



6.6 



6.4 



5.8 



4.7 



3.3 



1.6 



21 



8 



8.2 



7.8 



7.6 



7.3 



6.6 



5.3 



3.7 



1.7 



21 



9 



9.2 



8.8 



8.5 



8.2 



7.4 



5.9 



4.1 



1.9 



14 



10 



10.2 



9.8 



9.5 



9.1 



8.2 



6.5 



4.5 



2.1 



6 



11 



11.2 



10.8 



10.4 



10.1 



9.0 



7.1 



4.9 



2.2 



3 



12 



12.2 



11.7 



11.4 



11.0 



9.8 



7.7 



5.3 



2.4 



1 



13 



13.2 



12.7 



12.3 



11.9 



10.6 



8.3 



5.7 



2.6 





14 



14.2 



13.6 



13.2 



12.8 



11.3 



8.9 



6.1 



2.7 





168 



