336 



Forestry Quarterly 

 Yellow pine 23-inch D. B. H. — 6 logs 



24+ 2 



80 



Yellow pine 27-inch D. B. H. — 6 logs 



30+ 2 



These are not selected trees, but were chosen at random from 

 measured trees that contained an even number of 16' logs. 



The feature of dropping an entire or part of a butt log is par- 

 ticularly adaptable to trees having defective butts which would 

 not be utilized, the D. I. B. measurement being estimated at 

 16 feet above where the tree would be butted off. For example, 

 if the butt of a tree is worthless for a distance of, say, 4 feet, the 

 D. I. B. would be taken at 20 feet instead of at 16 feet, the first 

 four feet being disregarded. Such species as Yellow pine to 

 which a fixed top diameter can not be strictly applied may be 

 estimated to the top diameter which would be taken and this 

 diameter used in getting the scale of the top log. 



From the formula a volume table may be made up which will be 

 applicable to practically all trees cut to the same diameter in the 

 top. For example, if trees are cut to 6" tops 



D.I.B. 



Av. log 



Number of Logs 

 3 



