126 THE WOODSMAN’S HANDBOOK. 
Form for Computing the Contents of Sample Plots. 


HEMLOCK. 
| | | Contents of | | ) 
Diameter | | Number of | average tree| Total con- | 
: preasthigh. | trees. from vol- tents. | 
: ume table. | 
| . 
Inches. | Board feet. | Board feet. | 
10 10 45 | 450 
Pat hh oe Ee 6 | 715 
| 12 | 9 90 810 
eee &. 8 118 944 
YY 8 143 1,144 | 
ieee ee, 9 175 1,575 
| 16 | 7 205 1, 435 
ars 6 240 1,440 | 
| is 6 275 =| 1,650 | 
| 10, 163 
' 
The Use of Heights in Estimating. 
Some cruisers classify the trees, as they measure them, into two- 
log, three-log, four-log trees, etc. They have on their tally sheets 
several columns for each kind of tree, as follows: 
f 
WHITE PINE. | HEMLOCK. | 
Six- | Two- Three-| Four Five- 
log | log | log | log | log 
trees. beew trees. _ trees. trees. 
ieee Two- Three-| 'Four- Pive- 
breast- | log log | log | log 
high. | trees. trees. | trees.| trees. 


ee eS 
The total amount of timber on the area on which the trees are 
counted is then determined as follows: Find from a volume 
table, such as that given on page 93, the amount of timber in an 
average two-log tree of each diameter and multiply this amount 
in each case by the number of trees of the diameter in question. 

