40 A MANUAL FOR NORTHERN WOODSMEN 
D. M. D.’s of the several courses multiplied by the corre¬ 
sponding latitudes, north latitudes being reckoned posi¬ 
tively and south latitudes negatively. If the tract is kept 
on the right in the course of the survey, the result comes 
out with a minus sign. 
An operation of this kind, starting w’ith the balanced 
latitudes and departures, may be conveniently arranged 
as follows: 
Course. 
Lat. 
Dep. 
D. M. D. 
+ 
Area. 
Area. 
A —B 
— 9.95 
-(- 17.38 
17.38 
172.93 
B —C 
+ 12.32 
+ 8.72 
43.48 
535.67 
... 
C —D 
+ 11.57 
. — 4.21 
47.99 
555.24 
D—E 
+ 6.97 
— 14.65 
29.13 
203.04 
E —A 
— 20.91 
— 7.24 
7.24 
151.39 
1293.65 
324.32 
324.32 
2)969.63 
484.81 sq. ch. 
Area = 48.48 acres. 
3. Plotting 
The computation of traverse, if it aids in testing the 
accuracy of a survey, gives also data for plotting it with 
ease and accuracy. Taking the initial point of the survey 
as the starting point for a meridian and a base line vertical 
to it, the position of the second point of the survey may be 
fixed by measuring off its latitude on the vertical line, its 
departure on the horizontal, and from these points drawing 
lines parallel to the base and the meridian until they inter¬ 
sect. The latitude of the second course may then be added 
to that of the first and the two departures also added to¬ 
gether, when the third point of the survey may be fixed in 
the same way as before, and so on until the survey is 
finished. The points thus fixed may then be joined by 
lines representing the courses. The position of the points 
in the above survey as taken from the balanced figures on 
