FOB WHOLE TREES. 



41 



Curves showing average volume in board feet of each grade actually "sawed 

 out" at mill, from merchantable portion of mature western yellow pine 

 trees of different diameters breasthigh. 



High Grades Sawed From Mature Trees. 



800 



600 



4OO 



200 



18 22 26 30 34 38 



DIAMETER BREASTHIGH INCHES 



FIG. 16. C. and Better, 6/4" 



42 



46 



400 



200 



22 



26 30 34 38 



DIAMETER BREASTHIGH INCHES 



FIG. 17. Moulding stock. 



42 



46 



