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 skins are equal to one otter skin; and ten of the former are generally allowed for a common gun. Here is a profit of at least 500 per cent, exclusive of all costs.

Michilimackinac is a small island situated in the upper part of Lake Huron near the commencement of the strait which connects this Lake with Lake Michigan.[79] The aspect of the island is elevated and irregular. The fort of Michilimackinac is situated on this island, near to which are several stores and dwelling houses. This is a very important post. The strait and also the lakes which it connects abound with fine fish; the principal kinds of which are herring, white fish, and trout. The Michilimackinac trout are bred in Lake Michigan, and are celebrated for their size and excellence; they sometimes weigh sixty or seventy pounds.

The strait of Michilimackinac is about fifteen miles in length. The course of its current, into Huron or Michigan, depends upon the winds; and is, therefore, very irregular. At times it is exceedingly rapid.

Lake Michigan is about two hundred and fifty miles in length. Its breadth is about sixty miles. Including the curvatures of its bays, its circumference is about nine hundred miles. There are a great many rivers which rise in the peninsula between this Lake and Lake Huron, and which pass into the latter. That part of this peninsula which lies along the south-east of Lake Michigan is but little known. The names of the principal rivers here are Marguerite, Grand, Black, and St. Joseph. The latter is by far the largest, and may be ascended about one hundred {130} and fifty miles. On this river is situated Fort Joseph.[80]