\fdO'^ - Old Forge Coal Mines

240 SURVEYING.
A B, as the bearing is
N E. Mark the point of
angle measurement care-
fully, and draw a line joining
it and the point A.
This line will give the di-
rection of the first course,
the end of which is at
Sta. 5 + 20, giving 520
ft. for the length of that course. On this
line lay off to a scale of 600 ft. to the inch the
distance 520 ft., locating the point C, which is
Sta. 5 + 20. Through Cdraw a meridian C D, and
with the protractor lay off the bearing angle
N 40° 50' E to the right of the meridian, mark-
ing the point of angle measurement and joining
it with the point 6" by a straight line, which will
be the direction of the second course. The end
of this course is Sta. 10 + 89, and its length is
the difference between 1,089 and 520, which is
Co.
569 ft. This distance scale off from C, locat-
ing the point £ at Sta. 10 4- 89. In a similar
manner plat the remaining courses given in
the example. Write the bearing of each line
directly upon the line, taking care that the
bearings shall read in the same direction
as that in which the courses are being
run.