66 



A MILL SCALE STUDY OF WESTERN YELLOW PINE. 



Volume Contoured for Height. 



Contoured curves showing average volume in board feet, also in cubic 

 feet, contained in merchantable portion of immature trees, of different 

 merchantable lengths, and diameters breasthigh. 



400 



300 



00 



too 



20 



22 



24 26 28 3O 32 34 



DIAMETER BREASTHIGH INCHES 



40 



FIG. 74. Total volume in cubic feet inside bark from the stump to a height where 

 the tree is 6" in diameter outside the bnrk. 



