Читать книгу A Book of the United States - Various - Страница 7

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ALL the rivers of the United States, of the first magnitude, have their sources, either in the Rocky Mountains, or in elevated spurs projecting from the sides of that range. Many of the rivers which descend from the western sides of the Alleghanies are of inconsiderable volume, and by no means remarkable for the rapidity or the directness of their course. Those which flow from the eastern and southern sides of these mountains are worthy of extended description, even in the same pages with the great tributaries of the Mississippi. They afford the advantages of a good inland navigation to most parts of the states.