A FOREST WORKING PLAN. 



397 



1901 on the tract of the Hon. William C. Whitney, Township 23^ Totten and 

 Crossfield Purchase, Hamilton County, and on the Rockefeller Tract, Townships 

 16 and 17, Macomb's Purchase, Great Tract, No. 1, Franklin County, 571 white 

 pine and 1,445 hemlock trees being analyzed. The volume tables for white pine 

 and hemlock follow: 



TABLE VI.— MERCHANTABLE VOLUME PER TREE IN STANDARDS BY 



DIMICK'S RULE. 



DIAMETER 

 BREASTHIGH. 



White Pine. 



Hemlock. 



DIAMETER 

 BREASTHIGH. 



White Pine. 



Hemlock. 



Inches. 



Standards. 



Standards. 



Inches. 



Standards. 



Standards. 



10 



0-5 



0.02 



26 



4-7 



2.13 



II 



.6 



•03 



27 



5-2 



2.38 



12 



•7 



•05 



28 



5-7 



2.69 



13 



•9 



.08 



29 



6.2 



3.00 



14 



1.0 



.12 



30 



6.8 



3-34 



15 



1.2 



.18 



31 



7-4 



3-67 



16 



1.4 



•25 



32 



7-9 



4.04 



17 



1-7 



•34 



33 



8.5 



4.41 



18 



2.0 



.46 



34 



9.1 



4-79 



19 



2.2 



•59 



35 



9-7 



5-19 



20 



2-5 



.76 



36 



10.3 



5.6i 



21 



2.9 



•94 



37 



10.9 



6.04 



22 



3-2 



1. 16 



38 



11. 4 



6.45 



23 



3-5 



1.36 



39 



12.0 



6.86 



24 



3-9 



1. 61 



40 



12.6 



7.27 



25 



4-3 



1.85 









Yield Tables. 



Present Yield. — The following tables show the present yield of merchant- 

 able timber for the eight commercially important trees growing on Townships 5, 

 6 and 41. They were compiled from the valuation surveys taken on the three 

 townships in the following manner: The data from the surveys run in a given 

 compartment show, when compiled, the average number of trees per acre of each 

 species in each diameter class. By the use of volume tables the average yield 

 per acre can be determined. The total yield for the compartment is then got 

 by multiplying the yield for the average acre by the total number of acres in 

 the compartment. 



