FOR TOP LOGS. 



107 



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

 out" at mill, from top logs of mature western yellow pine trees of differ- 

 ent diameters breasthigh. 



High Grades Sawed From Top Logs of Mature Trees. 



too 



50 



18 22 26 30 34 38 



DIAMETER BREASTHIGH INCHES 



FIG. 154. C. and Better, 6/4". 



42 



46 



100 



50 



Ha --r-tr-f 



18 22 26 30 34 38 



DIAMETER BREASTHIGH INCHES 



FIG. 155. Moulding Stock. 



42 



46 



100 



50 



18 22 26 30 34 38 



DIAMETER BREASTHIGH INCHES 



FIG. 156. No. 1 Shop, 6/4". 



42 



46 



