CHAPTER LI.. Trip to Detroit--American Fur Company; Its History and

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.