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132 RIVERS: Potomac (continued)— Maryland legislature concerning, 50; report of committee, 51; Virginia and Maryland unite in improvement of, 51; Potomac Company improves, 52–64; Potomac Canal in valley of, 67–68; route of Chesapeake and Ohio Canal in valley of, 79; Chesapeake and Ohio Canal inaugural pageant on, 103–104; Chesapeake and Ohio Canal finished to Holman's Dam on, 123; act for opening and extending navigation of, 219–224.
 * Powell's, Dr. Walker names, 6, 65.
 * Red, Walker and Gist on, 6, 75.
 * Rockfish, 6, 54.
 * Rocky ("rivière à la RocheRoche" [sic]) Céloron on, 9, 36, 46–47.
 * Salt, early settlement on, 6, 80.
 * Schuylkill, floating bridge over, 12, 63; early improvement of navigation of, 13, 32.
 * Shenandoah, early navigation of, 13, 36–37.
 * St. Lawrence: portages on, 7, 24–28; navigation of, 58.
 * Susquehanna: early duck-hunting on, 11, 110; failure to secure slackwater navigation for, attributed to opposition of railways, 12, 162; Dickens describes long bridge across, 177; early