TABLES RELATING TO PARTS III AND IV 287 



VOLUME TABLE No. 26. DOUGLAS FIR OF THE COAST 

 BY THE SCRIBNER DECIMAL RULE 



(U. S. Forest Service) 



Based on 1394 trees measured in logging operations in 

 Lane County, Oregon. Diameters, taken outside bark, 

 on the stump, which was ordinarily about 4 feet high, are 

 closely comparable with the diameter at breast height. 

 Trees scaled without deduction for defect or breakage, to 

 a point 10 inches in diameter at the top, unless unmer- 

 chantable to this point. The majority of the logs were 

 24 feet long, though the length varied from 16 to 36 feet. 



