TIMBER ESTIMATING. 79 
ESTIMATE BY COUNTING LOGS. 
A modification of this method is to make an estimate by counting 
logs. This consists in going over a given tract by strips 4 rods wide, 
and their distance apart will depend on the proportion of the area 
to be covered. The estimated top diameter of each merchantable 
log is recorded, and, if advisable, the estimated breastheight diam- 
eter of each tree. If there is a crew of 2 men, one directs the strip 
on a compass line and paces the distance, the other records the 
diameters of the trees and logs. The compass man first paces off a 
short distance, for example, 10 yards, and waits until the tally man 
records the trees in that distance and comprised within a 4-rod 
strip. The tally man records on a tally sheet the estimated breast- 
high diameter of each tree and the estimated top diameters (inside 
bark) of each 16-foot log, as shown by the following table: 
Summarized record of estimated diameters. 
SPRUCE. 
{Waterville, N. H. Block, Snow Brook. Compartment, II. Strip, No. 17. 
Course, N. 8° E. Length, 120 rods.] 
| 
| | TOP DIAMETER OF LOGS INSIDE BARK 
| | (INCHES). 
Diameter age | 
breast-  bero 
high. | trees. 6 | 7 S | _ 
| | NUMBER OF 16-FOOT LOGS. 
et 
o> 
ol 
om) 
| | 
Inches. | | | | | | 
12 | 91 | 83 | 68 | 59 | 44| 33] 16] 8| 8| 
ey | | | ine 
$0.42 2) | | | | 
(5 aa Reet ag | | 
12| 30 ieee 
135 | | 
14!) 15 | 
1al 2 | | | 
| 
| | 
