CHAPTER VI.. Lake Superior -- Scenery -- Transparency of Its Waters --

Lake Superior -- Scenery -- Transparency of its waters -- Climate -- Isle Royale -- Apostles' Islands -- La Point -- Thunder Cape -- Cariboo Point -- A wonderful lake -- Romantic scenery -- Pictured rocks -- Rock Castle -- The Grand Portal -- The chapel -- Fluctuations in the waters of Lake Superior -- Curious phenomena -- Retrocession of the waters -- Mirage -- Iron mountains and mines -- Description of -- Products -- Shipments -- Copper -- Immense boulders -- Produce of the mines for 1857 -- Shipment of copper from the Lake for 1858 -- Centre of the mining country -- Iron mountains -- Copper mines of Great Britain -- Coal -- Mackinaw a great manufacturing point -- Key to the Upper Lakes -- Commerce of lakes -- Growth of cities. 105