Excerpt from Voyage from Detroit to Michillimackinae 1721
Lake Superior Journal 1850
This lake is two hundred leagues long from east to west, and in many places eighthy wide from north to south, all the coast is sandy and pretty straight; it would be dangerous to be surprised here by a north wind. The north side is more convenient for sailing, because it is all along lined with rocks, which form little harbours, where it is very easy to take refuge; and nothing is more necessary when we sail in a canoe on this lake, in which travelers have observed a pretty singular phenomenon. They say that when there will be a storm they have notice of it two days before. At first they perceive a little trembling on the surface of the water, and that lasts all that day, without any manifest increase; the next day the lake is covered with pretty large waves, but they do not break all the day, so that one may sail without danger, and may also make a great deal of way if the wind is fair; but the third day, when it is least expected, the lake is all on fire; the ocean, in its greatest fury, is not more agitated, and one must have instantly some asylum to fly to for safety; which we are sure to find on the north side, whereas on the south coast, one must from the second day encamp at a good distance from shore.