44 



BULLETIN 820, U. S. DEPARTMENT OF AGEICULTUEE. 



Table 23. — Stand of trees on jack pine land, Roscommon and Crawford Counties, Mich. 

 [Average of 100 aires. MeaTarements by T. H. Sherrard, 1901.] 



Diameter breast hish. 



Jack 

 pine. 



Scarlet 

 oak. 



Nor- 

 way 

 pine. 



Aspen. 



Red 



oak. 



Vv'hite 

 pine. 



White 

 oak. 



Tama- 

 rack. 



Spruce 



White 

 ash. 



Total. 



Inches. 

 1. . 



11.86 



15.69 



14.42 



14.47 



12.02 



8.26 



4.68 



2.62 



2.69 



1.31 



.27 



.0.5 



.01 



2.09 

 2,19 

 1.20 

 .97 

 .53 

 .40 

 .26 

 .15 

 .07 

 .03 

 .01 



0.29 

 .22 

 .10 

 .08 

 .04 

 .03 

 .01 

 .04 

 .01 

 .04 

 .04 

 .04 

 .02 

 .08 

 .05 



0.42 

 .19 

 .03 

 .02 

 .01 



0.14 

 .23 

 .12 

 .03 

 .02 

 .01 

 .02 

 .02 



0.20 

 .11. 

 .01 

 .03 

 .01 



0.08 



""".'64' 

 .01 

 .03 

 .05 

 .04 

 .01 



0.04 

 .06 

 .01 

 .01 

 .05 



"6." 64' 

 .01 



"'."62" 



0.01 





2 





3.. 



.01 

 .01 





4 





5 





6. . 





, 





7 









8.. 



.01 



1 





9 







10 





.01 



.01 











11 











12 









.01 





1 





13 











1 





11 













1 





15 

















1 





IG 







.05 













1 





17 







.10 

 .05 

 .03 

 .01 

















18 - 











.01 







1 





19 















1 





21 











.01 

 .01 







1 





23. 



















21 







.01 

 .01 















2j 













































Total 



88. 3.5 



88.48 



4.40 



7.93 



7.94 

 3.50 



1.36 



1.36 



10.30 



.67 



.67 



1.80 



.60 



.60 



3.30 



1.40 



.40 



6.10 



.27 



.27 



5.10 



.18 



.18 



3.60 



.07 



.07 



3.20 



.03 



.03 



3.00 



99.86 





100.00 



Average diameter 





Table 39. — StoJid of trees on jack pine land, site quality ^ in ivestern Ontario — Average 



of 11 acres. 



[From an article by L. M. Ellis in the Forestry Quarterly, March, 1911.] 



Diameter breast 

 high. 



Jack 

 pine. 



K« A3P,n. 



Blaclc 

 spruce. 



Balsam. 



Average number of trees per acre. 



Inches. 

 4 



1.0 



1.2 



1.2 



6.0 



12.5 



17.6 



12.5 



12.2 



11.2 



11.0 



6.0 



3.1 



1.0 



26.2 

 24.7 

 22.5 

 25.0 

 16.7 

 7.0 

 2.5 

 1.7 

 1.2 

 .5 



0.8 

 1.7 

 4.2 

 2.7 

 4.2 

 4.5 

 3.7 

 3.0 

 2.5 

 1.7 



.7 



.02 



13.0 



21.5 



19.2 



15.2 



9.5 



6.5 



2.5 



2.2 



1.7 



.02 





5 



0.5 

 .25 

 .75 

 .75 

 .50 

 .50 

 .25 

 .25 

 .25 

 .25 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 







10.. . ... 









Total 



Per cent 









93.0 

 27.0 



128.0 

 37.0 



27.0 91.0 

 8.0 27.0 



4.0 

 1.0 





Trees 10 



inches am 



i over in diameter, breast high. 





Total 



Per cent 



57.0 

 42.0 



59.0 

 44.0 



11.6 



8.4 



0.4 

 4.6 



1.50 

 1.0 





Yield of jack pine on these acres about 25 per cent higher than the average for this type in western Ontario. 

 1 Deep, well-drained soil on which jack pine produces its largest returns in sizes suitable for cross ties. 



