Such are a few, but a few only, of the many navigable rivers which pour their waters into the Mississippi; there are many others whose names our space precludes the possibility of our even mentioning. To the north and the west, we have the St. Lawrence, a river second only to the Mississippi, with a course of upwards of 2000 miles, receiving the waters of about thirty others of considerable size; and, though navigable itself for large sea-going vessels only as far as Montreal, a distance of 880 miles from the Atlantic, it is extensively used in its upper portion under the name of the St. Mary’s River, where, among the islands with which it is studded and the numerous rapids with which it is impeded, it is navigated by vast rafts of timber and by fleets of strong flat-bottomed boats expressly built for the purpose, and well-known as the Canadian _batteaux_. Then we have the River Hudson (on which the first vessel in America propelled by steam was employed), small in itself compared to those I have named, but important from its connection with New York, and the extent and value of its trade; and most interesting to the traveller, from its beautiful scenery. This river is navigable for ships of large burden up to the town from which it derives its name, about 120 miles above New York, and for vessels of smaller draught of water to Albany and Troy respectively 30 and 34 miles further. To the north we have the Penobscot with a course of 300 miles from the bay of that name in the State of Maine, navigable for large vessels to Bangor, a distance of 50 miles, and the Kennebach River with a course of 230 miles, navigable for 40 miles from the sea, as also the Merrimac of 200 miles in length, and the Connecticut, which, after a course of 450 miles through a highly cultivated and fertile country, discharges itself into Long Island Sound. To the south there is the important River Delaware, of 310 miles in length, navigable for vessels of the largest class to Philadelphia, a distance of 40 miles, and the Susquehanna flowing into the Chesapeake, which, though the largest river in the important and productive State of Pennsylvania, is more celebrated for the beauty of its scenery than for the facilities it affords for navigation. There is also the Patapsco, navigable to Baltimore for vessels drawing 18 to 20 feet of water; the Patuscent, navigable for 60 miles from its mouth; and the Potomac, navigated by vessels of the largest class to Washington, a distance of 103 miles from Chesapeake Bay; as also the Rappahannoc, navigable for 110 miles to the town of Fredericksburg, besides the James River and various others of greater or less importance extending along the line of coast from Chesapeake Bay to the western shores of the Gulf of Mexico. [Sidenote: Seaboard.] [Sidenote: Bays and roadsteads.]