104 



A MILL SCALE STUDY OP WESTERN YELLOW PINE. 



Value. 



Value of Grades Sawed From 16' Butt Logs of Immature Trees of 

 Different Diameters Breasthigh, Expressed in Dollars and Cents. 



16.00 



14.OO 



12.00 



10.00 



18 22 24 26 28 SO 32 34 3 

 DIAMETER BREASTHiGH INCHES 

 FIG. 145. High grades. 



.0320' + .030&' + .027c' + .025d' = Aval'. 





38 40 42 44 



8.00 



6.00 



4.0O 



2.OO 



18 20 22 24 26 28 3O 32 34 36 38 4O 42 44 

 DIAMETER BREASTHIGH INCHES 



FIG. 146. Intermediate grades. 



.022e' + .018/' + .0180' + .018fc' + .007i' = Bval'. 



8.OO 



6.00 



20 22 24 



OOQ? 



26 28 3O 32 34 36 

 DIAMETER BREASTHIGH INCHES 



FIG. 147. Low grades. 



no? if/ j_ m -^' n, 



38 4O 42 44 



