Trip to Detroit--American Fur Company; its history and
organization--American Lyceum; its objects--Desire to write books on
Indian subjects by persons not having the information to render them
valuable--Reappearance of cholera--Mission of Mackinack; its history and
condition--Visit of a Russian officer of the Imperial Guards--Chicago;
its prime position for a great _entrepôt_--Area and destiny of the
Mississippi Valley.