PRACTICE OF TIMBER ESTIMATING 207 



the observation and training the judgment. The In --I 

 result that can come from such work (it can be gained 

 only with time and experience, and some men never will 

 acquire it) is the capacity to make a close estimate of the 

 contents of a tree standing. 



Contents of the average tree in a piece of timber, ob- 

 tained by methods of this kind, may be made a starting 

 point for the next step in the process. A man may count 

 all the trees standing on a small piece of ground, using 

 safeguards that he will readily think up to get all the 

 trees in and not to count any a second time. If the terri- 

 tory is too large for that, sample acres in any number 

 can be run out in fair average ground and the trees counted 

 up on them. 1 A square acre is 209 feet on a side, about 

 80 paces. A circular acre is 236 feet in diameter. Or, 

 some form of the strip method may be used as described 

 on the preceding pages. The area of ground without tim- 

 ber should be thrown out; single trees or bunches that are 

 of exceptional size and quality should be treated separately. 

 Material loss from breakage enters when about 100 feet 

 in merchantable length is passed, and runs up to nearly or 

 quite 50 per cent on very broken land with heavy timber. 



The above, compared with really adequate, profes- 

 sional cruising, is only an expedient; still, carried out by 

 a clear-headed man, it might really be worth more than 

 what passes oftentimes as something more ambitious. 

 Such a man, too, can sometimes find out what he wants 

 to know, or manage to protect his own interests in matters 

 of this kind, without resort to timber cruising. Some 

 men also have judgment on the contents of a body of 

 timber as a whole who are unfamiliar with a systematic 

 timber estimate, and would be slow and uncertain in the 

 execution of it. 



32 feet long; multiply by the number of 32-foot logs less one- 

 half log. 



Or, to base diameter add one-half of base diameter and divide 

 by 2; multiply by .8, square and divide by 12. The result is the 

 number of feet in the stick per foot of its length. 3 to 5 per 

 cent may sometimes be added for contents above the point 

 stated. 



1 For a caution on this head, see page 187. 



