John Stevens For the first time a 50-foot long steamboat, the Phoenix, has sailed the open ocean, over 120 miles from New York to the mouth of the Delaware river. Then she has gone upstream over extra 90 miles to Philadelphia. The journey has been done under steam solely since Phoenix is deprived of sail. As everybody knows, Robert Fulton's partner, Robert Livingston, 63, obtained the monopoly of navigation on the Hudson river as early as 1798. The success of the steamboat