In the Senate of the United States. January 23, 1857. -- Ordered to be printed. Mr. Bigler, from the Committee on Commerce, made the following report. (To accompany Bill S. 470.) The Committee on Commerce, to whom was referred the memorial of the Board of Trade of the City of Pittsburg, asking for an appropriation of public lands, to enable a company chartered or to be chartered, by the states bordering on the Ohio River, to improve its navigation; as also the bill offered by the Senator from Ohio, (Mr. Pugh,) providing for an appropriation of $50,000 to pay the expenses of topographical and hydrographical surveys on the tributaries of the Ohio, with a view to the improvement of its navigation, by means of a system of reservoirs, to retain the water when it is abundant and supply it to the channel of the river during the dry season, beg to report... [electronic resource]