2. Locate as many points by intersection as possible.
3. Make traverse by road, check locations by resection.
4. At good observation points observe and complete the sketch as far
as possible.

At each station keep the following points in view:

1. Back sight on previous station.
2. Select new sighting point ahead.
3. Determine elevation by slope board.
4. Put in contours where possible noting the drainage and critical
points of the general slope and the terrain.
5. Put in details along traverse just made of all topographical
features of military importance.
6. Determine your present elevation.
7. Make as many shots for intersection as you can and mark them.
8. Look for possible resection shots.


LESSONS 9 AND 10. (FIELD WORK--NINE HOURS.)

PROBLEM.--Make a road sketch of about 12 miles with scale of 3 inches
to the mile, V.I. 20 feet. This should include details of military
importance to a distance of 300 yards on either side of the road.

Keep in mind these points:

1. Start carefully and give attention to every part of the map.
2. Keep the board properly oriented.
3. Watch the water drainage systems.