
ORIGIN AND USE OF THE LOG RULES. 51 
Illinois, Indiana, New Jersey, Virginia, and West Virginia, and 
probably in some other States. It is based on the following 
formula: Deduct one-third of the diameter at the small end of the 
log inside the bark for saw kerf and slab, square the remainder, 
multiply by the length, and divide this product by 12. The result 
will be the contents in board feet. 
The Square of Three=-fourths Rule. 
Other names for this rule are the Portland Scale, the Noble and 
Cooley Rule, the Cook Rale, the Crooked River Rule, and the 
Lumberman’s Scale. It is used in Maine, Massachusetts, and New 
Hampshire. The formula upon which it is based is as follows: 
Deduct one-fourth of the diameter at the small end of the log 
inside the bark for saw kerf and slab, square the remainder, mul- 
tiply by the length of the log, and divide this last product by 12 
_ for the contents in board feet. 
The Drew Rule. 
This rule has been adopted as the official scale of the Puget 
Sound Timbermen’s Association. It is used only in the extreme 
Northwestern States. It is based upon diagrams drawn for logs 
of different diameters from 10 to 65 inches. The results were 
aiterwards corrected by sawyer’s tallies. 
The Herring Rule. 
This is also called the Beaumont Rule, and is used in Texas. It 
is based upon measurements of logs sawed at the mill. 
The Dusenberry Rule. 
This rule is used in Pennsylvania, New York, Ohio, and Indiana. 
It is based upon the measurement of logs actually sawed into 
boards. It was made originally for white pine, but is now used 
also for other soft woods. 
The Orange River Rule. 
This rule is also known as the Ochiltree Rule and as the Sabine 
River Rule. It is used in Texas. Itis based on the following 
