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Superior, (Lake) the largest body of fresh water in the world,
being about four hundred and ninety miles long and one hun
dred and ninety miles wide; its circumference following the coast is
estimated at about [twelve] seventeen hundred & fifty miles, and its surface
occupies nearly thirty thousand square miles. Its
mean depth is supposed to be about nine hundred
feet or three hundred feet below the level of the
ocean, its surface being ascertained to five hundred
and ninety six feet above the Ocean level and eighteen
feet above Lakes Huron and Michigan. the
Western part of this lake lies in the Territory of Wisconsin
embracing all west of a line from the mouth of the
Montreal river to the part to where the northern boundary
of the United States leaves the lake. For four miles
west of the mouth of the Montreal, the shore consists of
high perpendicular sand works; then commences a sandy
plain which continues to La [Pointe?}. West of this point is
a rough, high, [broken], region of hills consisting of
hornblende rocks. Three miles west of the Boise [Brule] is