118 



A MILL SCALE STUDY OF WESTERN YELLOW PINE. 



Value. 



Value of Grades Sawed From Top Logs of Immature Trees of Different 

 Diameters Breasthigh, Expressed in Dollars and Cents. 



1.5O 



8 



uj Q i.oo 



18 2O 22 24 26 28 3O 32 34 36 38 4O 42 44 

 DIAMETER BREASTHIGH INCHES 



FIG. 189. Intermediate grades. 



.022e" + .018/" + .0180" + .018/6" + .007*" = Bval". 



2.OO 



Q 1.5O 



1.OO 



.50 



18 



22 24 



26 28 30 32 34 36 

 DIAMETER BREASTHIGH INCHES 



FIG. 190. Low grades. 



38 40 42 



.009;'" + .007A;" + 015q" = Cval" . 



Aval" + Bval" + Cval" = B" = Value per top log. 



