The four cardinal points are north, south, east and west. Exactly midway between each of the four points are the divisions designated northeast, southeast, southwest and northwest. Then, again, intermediate, the last divisions and the cardinal points are other markings which show that the angles are nearer one of the cardinal points than the other, so that a course may be marked off, by the compass, which, if followed for a certain time, and the speed of that period determined, can be traced and thus marked out on paper so that the outline of the coast can thereby be laid out.
The Northern Shore OF WONDER ISLAND. Chart showing Voyage in "No. 3." Fig. 24.
The Professor had the charting board before him. "I have marked our starting point, which is designated as A. It will be remembered that we marked a course due west, passing the headland three miles from Cataract River. This is line 1. When we saw the land ahead of us last night, we changed our course by the compass to northwest, thus making a new line of travel, which you see is designated as 2. B was the point where the turn was made."
