Albany, New York forming a continuous water route from the Great Lakes to New York City. Unlike the current Barge Canal, which ends at nearby Waterford, the original Erie Canal ended at Albany; Lock 1 was north of Colonie Street. The Canal emptied into a man-made lagoon called the Albany Basin, which was Albany's main port from 1825 until the Port of Albany-Rensselaer opened in 1932. In 1829, while working as a professor at the Albany Academy, Joseph Henry, widely regarded as "the foremost American scientist of the 19th century", built the first electric motor. Three years later, he discovered electromagnetic self-induction (the
Great Lakes region area urban planners call the Great Lakes Megalopolis, which has an estimated 59 million people. Chicago is emerging as the third megacity in the United States, after the New York City and Los Angeles metropolitan areas, with a metro population approaching ten million. Cities along the Great Lakes have access to the Atlantic Ocean through the St. Lawrence Seaway, making them international ports. The Palaeozoic strata, are but parts of a great area of similar strata hundreds of feet in thickness. These strata decline gently southward from the great upland of the Laurentian Highlands of eastern Canada. The visible upland