'LOBLOLLY OR NORTH CAROLINA PINE. 



121 



sawed 1-7-inch kerf, circular sawed i/i-inch kerf and scaled by Doyle- 

 Scribner rule ; the value f . o. b. Norfolk, Virginia, of lumber sawed from 

 trees, and the stumpage value per tree under different costs of operation 

 calculated on the basis of actual contents and Doyle-Scribner rule. 

 Tables 62 to 64 give the same data for trees in stands 60 to 70 years 

 old. The salient feature in these tables is the value per 1,000 board feet 

 of the lumber from different sized trees and the value of their stumpage 

 as derived from the value of the lumber. Under a high cost of opera- 

 tion the stumpage value per 1,000 board feet more than doubles when 

 the diameter doubles. For a discussion of the three costs of operation 

 ($11, $13, and $15), and the import of stumpage value under Doyle- 

 Scribner scale and mill cut see page 137. 



TABLE 58. THE F. O. B. VALUE (!ST QUARTER, 1913) PER 1,000 BOARD FEET, AT POINTS WHICH 

 HAVE THE NORFOLK PRICE BASIS, OF DIFFERENT GRADES OF LUMBER SAWED FROM Loos OF DIF- 

 FERENT DIAMETERS. 



