forest commissioners report. 125 



Standard Measure — Blodgett Rule. 



The Bloclgett, or New Hampshire, Rule gives the contents 

 of logs in terms of a standard bolt 16 inches in diameter and 

 one foot long. The diameter should be measured at the middle 

 point of the log and the length taken. The number of Blodgett 

 feet may then be found by dividing the square of the diameter 

 by 256, and multiplying by the length of the log. Thus a log 

 16 inches in diameter at the middle, and 16 feet long scales 16 

 Blodgett feet. 



Cubic Foot Measure. 



The best practicable method of finding the cubic foot con- 

 tents of a log is to use calipers graduated on the beam to show 

 the cubic contents of logs of different lengths and diameters at 

 the middle point. In which case the solid scale may be read 

 direct as from a scale stick. 



A cubic foot scale may be made as follows : Multiply the 

 square of the diameter of the log at its middle by 3.1416, and 

 divide by 4. To convert to square feet divide by 144. Then 

 multiply by the length of the log. 



A cord of wood rarely contains more than no actual cubic 

 feet or less than 70 cubic feet. Hardwood cut in four foot 

 lengths will seldom run more than 85 cubic feet of solid wood 

 to the cord of 128 cubic feet. Softwood will run about 95 

 cubic feet. 



