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Abstract The Borough of the Bronx of the City of New York is bound on the south and southwest by the Harlem River, on the west by the Hudson River, on the north by Westchester County and the east by the most westerly reaches of the Long Island Sound and on the south by the East River. In 1898 the Bronx, formerly a part of Westchester County, was incorporated into the City of New York. It is the only New York City borough on the mainland. In 1848, a physical connection was made between the island...