296 



THE BOOK OF FORESTRY 



DOYLE LOG RULE 



NOTE. In the United States and Canada there are many log rules in actual 

 use; many of these, however, are of purely local importance. These rules 

 are intended to give the contents in board feet or other units of logs of dif- 

 ferent diameters and lengths. Ordinarily logs are measured in the woods 

 by the sealer, who uses a three-foot hickory rule upon which the figures given 

 in the log rule are burned. He measures the log at the small end inside the 

 bark, estimates the log length in even feet by his eye, reads from the figures 

 on the scale stick the contents of a log of that size and records the amounts 

 in a note book. 



