The _Wabash_ rises in the north-eastern part of Indiana, and flows south-westerly nearly across the state, when it turns to the south, and flows into the Ohio, forming towards its mouth the western boundary. Its length, from its mouth to its extreme source, exceeds five hundred miles. It is navigable for keel-boats, about four hundred miles, to Ouitanon, where there are rapids. From this village small boats can go within six miles of St. Mary’s river; ten of Fort Wayne; and eight of the St. Joseph’s of the Miami-of-the-lakes. Its current is gentle above Vincennes; below the town there are several rapids, but not of sufficient magnitude to prevent boats from ascending. The principal rapids are between Deche and White rivers, ten miles below Vincennes. White river and Tippecanoe river are branches of the Wabash. The _Cumberland_ rises in the Cumberland Mountains in Kentucky, and after a course of nearly two hundred miles in that state, passes into Tennessee, through which it makes a circuit of two hundred and fifty miles, when it re-enters Kentucky and falls into the Ohio, about fifty miles above the entrance of that river into the Mississippi. From the source of this river to its conflux with the Ohio, the distance in a direct line is three hundred miles, but by the course and windings of the stream, it is near six hundred miles, five hundred of which it is navigable for batteaux of fourteen or fifteen tons burthen. The _Muskingum_ rises in the north-eastern part of Ohio, and flows southerly into the Ohio river. It is two hundred miles in length, and is navigable for boats one hundred miles. It is connected by a canal with Lake Erie. The _Sciota_ rises in the western part, and flows southerly into the Ohio. It is about two hundred miles long, and is navigable one hundred and thirty. There are rich and beautiful prairies on the river, and its valley is wide and fertile. A canal passes along this valley, and extends north-easterly to Lake Erie. The _Licking_ and _Kentucky_ rivers take their rise in the Cumberland Mountains, and flow north-westerly into the Ohio. They are each about two hundred miles in length. The latter is navigable for one hundred and fifty miles, and has a width of one hundred and fifty yards at its mouth. The current is rapid, and the shores are high. For a great part of its course, it flows between perpendicular banks of limestone. The voyager passing down this stream experiences an indescribable sensation on looking upwards to the sky from a deep chasm hemmed in by lofty parapets. Among the other tributaries of the Ohio are the Great and Little Miami, Saline,[11] Green river, Big Sandy, Kanhawa.