The beds of these rivers, as well as that of the Danube, are continually changing, forming morasses and pools, and rendering the country near their banks marshy, Notwithstanding the work already done, such as canalizing and regulating the rivers, the erection of dams, &c., the problems of preventing inundations, and of reclaiming the marshes, have not yet been satisfactorily solved. [Please select]
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Improvements now under way in clearing and canalizing these rivers will add about five hundred miles of additional water-way. [Please select]
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