FOR BUTT LOGS. 



91 



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

 out" at mill, from 16' butt logs of mature western yellow pine trees of 

 different diameters breasthigh. 



High Grades Sawed From Butt Logs of Mature Trees. 



4.00 



300 



200 



100 



18 



200 



18 



300 



200 



100 



a, : 



22 



26 



30 34 



38 



42 46 



DIAMETER BREASTHIGH INCHES 



FIG. 102. C. and Better, 6/4". 



22 



26 3O 34 38 



DIAMETER BREASTHIGH INCHES 



FIG. 103. Moulding Stock. 



42 



DIAMETER BREASTHIGH INCHES 



FIG. 104. No. 1 Shop, 6/4". 



