TIMBER ESTIMATING. Le 
estimate for each ‘‘forty’’ then may be obtained by multiplying the 
strips by five; but to insure greater accuracy in irregular timber 
the cruiser makes short excursions at definite distances on each 
strip, going both to right and left far enough to see the timber upon 
all of the land and to judge as to its uniformity. He then corrects 
the result obtained on the strip if his observations show him that 
S00 STEPS 
S00 STERS 
—- —-——- —--—-— 320 R00S—--——-- —- 
2000 STEPS. 
125 STEPS 
Fig. 2.—A method of making strip surveys that is used in the Lake States. 
the remaining timber is either lighter or heavier than that which 
he has counted and measured. 
The volumes of the trees are determined by estimating the num- 
ber of 16-foot logs in trees of average height, using half logs if neces- 
sary and guessing at the contents of the average log, or the number 
of logs per 1,000 board feet. The tree count will then give the total 
number of logs and total volume of the stand in board feet. 
