FOR TOP LOGS. 



121 



Diagrams showing the high, intermediate, and low grades, sawed 

 from top logs, whole trees, and butt logs, of mature trees of different 

 diameters breasthigh, expressed in per cent of total sawed out. 



100 rr 



til 8O 



O 

 2O 



22 24 26 28 3O 32 34 36 38 4O 42 



DIAMETER BREASTHIGH INCHES 



FIG. 196. Top logs. Apt" + Bpi" -f Cpi" = 100%. 



20 22 24 26 28 3O 32 34 36 38 4O 42 



DIAMETER BREASTHIGH INCHES 



FIG. 197. Whole trees. Apt + Bpi -f Cpi = 100%. 



100 



