“ Inland the sand-hills rise to the height of 150 feet. On the Wisconsin side the land is being gradually worn away, while a gain is noticeable on the Michigan side. The lake communicates with Lake Huron through the Straits of Mackinac, and is connected with the Mississippi, supposed to have been its ancient outlet, by the old Illinois and Michigan Canal and the new Chicago Drainage Canal (q.v.) at Chicago. Like all the Great Lakes, it is subject to violent storms, and its shores are guarded by twenty-three light-houses. The best harbors are at the mouths of tributary rivers ”

“ Its islands are in the northern portion, forming the Manitou group; the largest, Beaver Island, is 50 miles long. It has two large bays—Green Bay, 100 miles long, and Grand Traverse Bay, 30 miles long—and three of lesser dimensions, Little Traverse Bay, Little Bay of Noquet, and Big Bay of Noquet. ”