12 



SELLING WOODLOT PRODUCTS ON MICHIGAN FARMS. 



grade uses. The grading must be an arbitrary one, depending on the 

 farmers' judgment and experience. Large, straight, smooth ("surface 

 clear") logs which appear to be sound can be classed as grade 1; sound 

 logs of fair size, witii a slight crook, or with a branch or two near the 

 end, fall into grade 2; all other salable logs belong to grade 3. The 

 grade number 1, 2, or 3, can be put in parenthesis in a corner of the 

 space provided for log lengths on the tally sheet. 



TALLY SHEET FORM 



*Eitber outside or inside bark, as the estimator prefers. It is probably simpler to make the estimate outside bark, deducting 

 the double bark thickness when the logs are added up for scaUng. The form on page 14, which shows the above logs added and 

 scaled by species, size, and grade, assumes that the tally was made outside bark, and that 2 inches were deducted for double 

 bark thickness. 



When the tally is complete for the whole stand, or the measured 

 sample of it, the number of logs of each kind, size, and grade must be 

 added up; and if, as in the example just given, the diameters of the 

 logs were estimated outside the bark, the double bark thickness must 

 be deducted. It is usually sufQciently accurate to assume a fixed de- 

 duction for bark (say 2 inches, as in the form on page 14), for all species 

 and sizes of log, based on the average thickness of bark actually cut from 

 diflferent parts of a number of trees.* The form on page 14 is a con- 

 venient one for adding up the logs according to kind, size, and grade, 

 and recording their lumber contents. The logs of each class are read 

 off from the tally sheet, and recorded (after subtracting the double bark 



*This arbitrary deduction may be justified on the ground that the diameters of the log ends are 

 estimated and not measured, are expressed in inches and not tractions, and can therefore be regarded 

 only as fairly close approximations. 



