32 THE WOODSMAN’S HANDBOOK. 
ORIGIN AND USE OF THE LOG RULES. 
The Scribner Rule. 
This is the oldest log scale now in general use. It was originally 
published in Scribner’s Lumber and Log Book, in later editions 
of which it was replaced by the Doyle Rule. It is now usually 
called the ‘‘Old Scribner Rule,’’ and is used to some extent in 
nearly every State. The rule was based on computations derived 
from diagrams drawn to show the number of inch boards that can 
be sawed from logs of different sizes after allowing for waste. The 
contents of these boards was then calculated and the table built up 
in this way. Sometimes the Scribner Rule is converted into what 
is known as the Scribner Decimal Rule by dropping the units 
and rounding the values to the nearest tens. Thus 107 board feet 
would be written 11 in the Decimal Rule; 104 would be written 10. 
The Hyslop Rule is practically the same as the Scribner Decimal 
Rule. TheScribner Rule is known in Minnesota as the Minnesota 
Standard Rule. In the original table no values were given below 
12 inches. 

