214 



FORESTRY AND TIMBER 



there are six different state log rules, and, in addition, three different 

 official log rules in Canada. It is probable that a standard method of 

 measuring logs will not be worked out satisfactorily until a single 

 unit o'f volume, like the cubic foot, is adopted for the measurement 

 of logs. 



The Forest Service of the United States Department of Agriculture 

 has adopted the Scribner Decimal Rule for timber sales on the National 

 Forests. It has been in use for about four years, and, in the main, has 

 proved satisfactory, since competitive bids enable the buyer to bid 

 higher if the character of the logs indicates a mill overrun. 



Scribner decimal log rule 



The total scale is obtained by multiplying the figures in this table by 10. Thus 

 the contents of a 6-inch 8-foot log are given as 0.5, so the total scale is 5 board 

 feet. A 30-inch 16-foot log is given as 66, or a total scale of 660 board feet. 



U. S. Forest Service Log-Scaling Directions 



Unless timber is sold on the basis of an estimate, it must be scaled, 

 counted, or measured before it is removed from the cutting area, or 

 from the place agreed upon for the scaling, the counting, or the 

 measuring. 



