THE NORTHERN HARDWOOD FOREST. 



67 



FORM TABLES. 



The following tables give diameters inside bark at different heights for average 

 birch, beech, maple, and basswood trees in Michigan and Wisconsin . Above breast- 

 height, the distance from the ground are in units of 8.15 feet above a 1-foot stump. 

 These units represent the half of a 16.3-foot log. The practical use of these tables 

 is to permit scaling trees of given size in terms of any desired log rule, but they also 

 serve as a basis for comparing the species with regard to form. (See similar tables 

 in Bulletin 152, "The Eastern Hemlock.") 



Table 43. — Form of yellow birch in the Lake States. 1 



50-FOOT TREES. 



Diameter, 









Height above ground— 



feet. 





























breast- 



1 



2 



3 



4.5 



9.15 



17.3 



25.45 



33.6 41.1 



49.9 



58.05 



Basis. 



high. 



























Diameter inside bark — inches. 



Inches. 

























Trees. 



4 

 5 

 6 

 7 

 8 

 9 

 10 



4.5 

 5.8 

 7.1 

 8.6 

 10.1 

 11.7 

 13.4 



4.1 

 5.2 

 6.3 

 7.5 

 8.7 

 9.9 

 11.1 



3.9 

 4.9 

 6.0 

 7.0 

 8.1 

 9.1 

 10.0 



3.8 

 4.7 

 5.7 

 6.7 

 7.6 

 8.6 

 9.6 



3.4 

 4.3 



5.2 

 6.1 

 6.9 

 7.9 

 8.7 



3.0 

 3.7 

 4.7 

 5.5 

 6.3 

 7.2 

 8.0 



2.4 

 3.1 

 3.9 

 4.7 

 5.5 

 6.2 

 7.0 





















5 

 1 

 2 

 1 

 2 





















































11 



60-FOOT TREES. 



4 



5 



6 



7, 



8 



9 

 10 

 11 

 12 

 13 

 14 



4.8 



6.1 



7.4 



8.8 



10.2 



11.7 



13.0 



14.4 



15.8 



17.2 



18.6 



4.2 

 5.3 

 6.5 

 7.6 

 8.7 

 9.8 

 10.9 

 12.0 

 13.0 

 14.1 

 15.3 



3.9 



4.9 



5.9 



6.9 



7.9 



9.0 



9.9 



11.0 



11.9 



12.9 



13.9 



3.6 



4.6 



5.6 



6.6 



7.6 



8.6 



9.5 



10.5 



11.3 



12.3 



13.2 



3.1 



4.2 



5.1 



6.1 



6.9 



7.9 



8.7 



9.5 



10.3 



11.1 



11.8 



2.7 

 3.7 

 4.6 

 5.5 

 6.3 

 7.2 

 7.9 

 8.7 

 9..3 

 10.0 

 10.7 



2.4 

 3.3 

 4.0 

 4.8 

 5.5 

 6.3 

 7.0 

 7.7 

 8.3 

 9.0 

 9.6 



1.9 

 2.6 



3.3 

 4.0 

 4.6 

 5.3 

 5.9 

 6.5 

 7.0 

 7.6 

 8.2 



1.3 

 1.9 

 2.3 

 2.9 

 3.3 

 3.9 

 4.3 

 4.9 

 5.3 

 5.9 

 6.3 













1 



2 

 6 

 7 

 6 

 9 

 5 

 3 







































1 







40 



70-FOOT TREES. 



6 



7.8 



6.5 



5.9 



5.6 



5.2 



4.8 



4.3 



3.5 



2.7 



1.9 



1.1 



1 



7 



9.1 



7.5 



7.0 



6.6 



6.0 



5.5 



5.0 



4.2 



3.3 



2.4 



1.5 



4 



8 



10.3 



8.6 



8.0 



7.5 



7.0 



6.3 



5.7 



4.9 



4.0 



2.9 



1.8 



3 



9 



11.6 



9.7 



8.9 



8.5 



7.7 



7.1 



6.5 



5.7 



4.6 



3.4 



2.1 



8 



10 



12.9 



10.8 



10.0 



9.5 



8.7 



7.9 



7.1 



6.1 



5.2 



4.0 



2.5 



15 



11 



14.2 



11.8 



11.0 



10.4 



9.5 



8.7 



7.9 



7.0 



5.9 



4.5 



2.7 



9 



12 



15.5 



12.9 



11.9 



11.4 



10.4 



9.5 



8.7 



7.7 



6.5 



5.0 



3.0 



15 



13 



16.8 



14.1 



13.1 



12.3 



11.3 



10.3 



9.5' 



8.5 



7.2 



5.5 



3.4 



11 



14 



18.1 



15.1 



14.0 



13.3 



12.1 



11.1 



10.2 



9.2 



7.9 



6.1 



3.9 



5 



15 



19.5 



16.3 



15.1 



14.1 



13.0 



11.8 



10.9 



9.9 



8.5 



6.7 



4.2 



2 



16 



20.9 



17.4 



16.1 



15.1 



13.9 



12.6 



11.7 



10.6 



9.2 



7.3 



4.6 



5 



17 



22.3 



18.5 



17.1 



16.0 



14.7 



13.4 



12.3 



11.3 



9.9 



7.8 



4.8 



2 



18 



23.7 



19.7 



18.0 



16.9 



15.6 



14.3 



13.2 



12.0 



10.5 



8.4 



5.3 



3 



19 



25.2 



20.7 



18.9 



17.8 



16.3 



14.9 



13.8 



12.6 



11.2 



8.9 



5.6 



2 



20 



26.7 



21.9 



20.0 



18.7 



17.2 



15.7- 



14.5 



13.3 



11.8 



9.5 



6.1 



1 



21 



28.1 



23.0 



20.9 



19.6 



18.0 



16.3 



15.1 



. 13. 9 



12.5 



10.1 



6.5 



1 



22 



29.8 



24.2 



21.8 



20.6 



18.8 



17.1 



15.7 



14.7 



13.1 



10.7 



6.9 



1 



23 



31.2 



25.3 



22.8 



21.5 



19.7 



17.8 



16.5 



15.3 



13.8 



11.3 



7.3 





24 



32.9 



26.5 



23.7 



22.4 



20.5 



18.5 



17.2 



16.0 



14.5 



11.9 



7.8 



1 



25 



34.3 



27.6 



24.7 



23.1 



21.3 



19.3 



17.8 



16.5 



15.1 



12.5 



8.3 



1 



26 



36.2 



29.1 



25.9 



24.0 



22.3 



20.2 



18.5 



17.5 



15.9 



13.1 



8.8 





90 



Gogebic and Wexford Counties, Mich.; Marinette and Vilas Counties, Wis. 



