15 



TABLE No. 6. Graded Mill Tally Log Rule for Yellow 



Birch. 



10-Foot Logs. 



Constructed by students of the Harvard Forest School under the direction of 

 Irving W. Bailey. First published in the Forestry Quarterly, Vol. XII, No. 1, 

 pages 5-23, "Graded Volume Tables for Vermont Hardwoods," by Irving W. 

 Bailey and Philip C. Heald. Tables 6, 7, and 8 give the contents in graded 

 lumber of a large number of logs (yellow birch, 1,530; beech, 631; sugar maple, 

 943) from hardwood stands on lower slopes and foothills of the Green Mountains 

 in southern Vermont. The logs were run through a single-action band saw 

 cutting a J-inch kerf, and the lumber from each was graded according to the 

 grading rules of the Northern Hardwood Lumber Association, the results being 

 averaged by a curve. The lumber was mostly 1-inch stock, sawed 1J inches thick 

 to allow for shrinkage. The mill crew were men of average skill, experienced in 

 hardwood mills in other regions. 



