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261. THE MISSISSIPPI AND TRIBUTARY RIVERS--THE CHANGING PHASES OF THEIR SHIPPING--RIVER NAVIGATION AS A NATION-BUILDING FORCE--THE VALUE OF SMALL STREAMS--WORK OF THE OHIO COMPANY--AN EARLY PROPELLER--THE FRENCH FIRST ON THE MISSISSIPPI--THE SPANIARDS AT NEW ORLEANS--EARLY METHODS OF NAVIGATION--THE FLATBOAT, THE BROADHORN, AND THE KEELBOAT--LIFE OF THE RIVERMEN--PIRATES AND BUCCANEERS--LAFITTE AND THE BARATARIANS--THE GENESIS OF THE STEAMBOATS--CAPRICIOUS RIVER--FLUSH TIMES IN NEW ORLEANS--RAPID MULTIPLICATION OF STEAMBOATS--RECENT FIGURES ON RIVER SHIPPING--COMMODORE WHIPPLE'S EXPLOIT--THE MEN WHO STEERED THE STEAMBOATS--THEIR TECHNICAL EDUCATION--THE SHIPS THEY STEERED--FIRES AND EXPLOSIONS--HEROISM OF THE PILOTS--THE RACES.