Son. AXD \ QUALITY II. 

 SITUATION I (out of 4 qualities). 



THE YIELD PER ACRE OP DOUGLAS FIR 



[A Provisional Tnhlc* 



* Based partly upon investigations made by the author in America. 



t Only timber exceeding 8 inches in diameter under bark has been included. 



! Felled thinnings have been valued at the same price per foot as the " standing " timber left after a thinnim;. 



8 " Tops " below 6 inches (q.g.) at 3d. per cub. foot. 



