40 



BULLETIN 820, XJ. S. DEPARTMENT OF AGRICULTURE. 



Table 22. — Average diameter outside barJc at different heights above the ground for jack 

 fine trees of different diameters on quality "poor" and quality "good" sites, in Hubbard 

 County, Minn., for trees grown mostly in dense, even-aged stands 18 to 78 years old on. 

 quality "poor, " and 20 to 45 years old on quality "good" sites. 



[Measurements by H. H. Chapman, 1905.] 



SITE QUALITY "POOR." 



Diam- 

 eter 

 breast 

 liigh. 



Height above ground (feet). 



Basis. 



1 



9 



17 



25 



33 



41 



49 



57 



Diameter outside bark (inches). 



Inches. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



1.7 



2.8 



3.9 



5.0 



6.2 



7.3 



8.4 



9.6 



10.7 



11.8 



12.9 



13.9 



14.9 



15.9 



16.9 



18.0 



19.0 



0.9 



1.8 



2.8 



3.7 



4.6 



5.5 



6.4 



7.4 



8.3 



9.3 



10.3 



11.2 



12.2 



13.1 



14.1 



15.0 



16.0 



0.4 



1.2 



2.1 



3.0 



3.9 



4.8 



5.7 



6.6 



7.4 



8.3 



9.2 



10.1 



11.0 



11.9 



12.8 



13.7 



14.6 













Trees. 



1 



11 

 22 

 30 

 55 

 43 

 60 

 37 

 28 

 25 

 14 



9 



3" 



1 



3" 













1.1 

 2.1 

 3.1 

 4.0 

 4.9 

 5.8 

 6.6 

 7.5 

 8.3 

 9.1 

 10.0 

 10.7 



n.5 



12.3 

 13.0 



















2.4 



3.2 



4.1 



4.9 



5.8 



6.6 



7.3 



8.0 



8.7 



9.4 



10.0 



10.7 



11.3 















2.9 

 3.8 

 4.7 

 5.4 

 6.0 

 6.6 

 7.2 

 7.7 

 8.3 

 8.8 

 9.4 











3.1 

 3.8 

 4.4 

 5.0 

 5.6 

 6.1 

 6.6 

 7.0 

 7.5 



2.2 

 2.7 

 3.2 

 3.7 

 4 2 

 4.6 

 5.0 

 5.4 



342 



SITE QUALITY "GOOD." 



2 

 3 

 4 

 5 

 6 

 7 

 8 

 ■ 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 



2.7 

 3.9 

 5.1 

 6.3 

 7.5 

 8.6 

 9.8 

 10.9 

 12.0 

 13.0 

 14.2 

 15.2 

 16.3 

 17.3 

 18.3 



1.7 

 2.6 

 3.6 

 4.6 

 5.5 

 6.4 

 7.3 

 8.2 

 9.C 

 9.9 

 10.8 

 11.7 

 12.6 

 13.5 

 14.4 















2 



8 



26 



30 



26 



34 



18 



22 



19 



7 



4 



6 



3 



2.1 

 2.9 

 3.8 

 4.6 

 5.4 

 6.2 

 7.0 

 7.8 

 8.6 

 9.3 

 10.1 

 10.9 

 11.7 

 12.5 













2.3 

 3.0 



3.7 

 4.4. 

 5.1 

 5.8 

 6.5 

 7.2 

 7.8 

 8.5 

 9.2 

 9.8 

 10.5 



1.4 

 2.0 

 2.6 

 3.2 

 3.7 

 4.3 

 4.8 

 5.4 

 6.0 

 6.6 

 7.3 

 7.9 

 8.6 





















1.9 

 2.1 

 2.4 

 2.8 

 3.3 

 3.9 

 4.6 

 5.3 

 6.1 

 6.8 











































2 







207 



