272 A MANUAL FOB NORTHERN WOODSMEN 



To use, caliper or estimate the breast diameter of the 

 tree or stand and get the total height. Then multiply 

 the basal area in square feet (see table on page 238) by 

 the proper factor in the table above. The product gives 

 the result hi cords. Considerable stands of timber 

 should be divided into diameter groups. 



Example 1. A 10-inch tree is 50 feet high. How much 

 cordwood is in it? .545 (basal area) X .35 (form height 

 factor) = .19 cord; or 1 -f- .19 = 5}, number of such 

 trees required for a cord if closely utilized. 



Example 2. A bunch of chestnut averaging 80 feet 

 tall and running 13 to 17 inches in diameter, to be cut 

 into extract wood, proves after calipering to have a total 

 basal area of 95 square feet. 95 X .29 (form height 

 factor in second table above) = 27.55, number of cords 

 in the stand. 



VOLUME TABLE No. 16. HARD WOODS, IN BOARD 

 FEET, BY THE SCRIBNER RULE 



(From R. A. Brotherton, Negaunee, Mich.) 



Stumps average about 3 feet high. One and two log 

 trees may either be short trees, or those that above a 

 certain height are faulty or defective. 



Elm in the sizes above 18 inches yields about 10 per 

 cent more than the above figures. 



