36 STATE BOARD OF FORESTRY. 



Ropp: 



Scribner: (Original values very erratic) 



Applies approximately to logs from 14" to 75", inclusive, in 

 diameter. This rule is very poorly constructed. 



Favorite: (Original values erratic) 



Maine: (Original values slightly erratic) 



(For small logs, 6" to 15", inclusive.) 



[(1 .222) -2] L = B.M. 



L 4X12 J 



(For logs 16" to 48", inclusive.) 

 Herring: (Original values slightly erratic) 



(Small logs up to 30".) 



(For logs from 30" to 42", inclusive.) 



Dusenbury: (Original values slightly erratic) 



Practically the same as the Herring Log Rule. 



Eules of this form will usually give a large per cent of mill overrun 

 for small logs, due to the presence of the constant b. Intermediate 

 logs will run below, hold up the scale or overrun, all depending upon 



