The _Savannah River_ which forms the boundary between South Carolina and Georgia, is a bold and deep stream, and is formed by the junction of the _Keowee_ and _Tugeloo_, two small streams issuing from the Blue Ridge, two hundred and fifty miles from the sea. It runs in a straight south-east course all the way to its mouth, seventeen miles below Savannah. It is navigable for ships of any burden to within three miles of Savannah; for vessels of two hundred and fifty tons to Savannah; and for boats of one hundred feet keel, to Augusta, above which the rapids commence; after passing them, the river can be navigated in small boats, eighty miles higher, to the junction of the tributary rivers. III. RIVERS OF THE PACIFIC AND THE GREAT LAKES. The waters that rise on the western declivities of the Rocky Mountains flow into the Columbia, the Multnomah and the Lake Bueneventura. _Columbia_ or _Oregon_ river rises within a mile of the head-waters of the Missouri. It collects its tribute for a wide extent along the western dividing ridges of the mountains, and on emerging from them becomes at once a broad and deep stream. After receiving Clark’s and Lewis’ rivers, each a large stream, from the east, it widens to nine hundred and sixty yards, and forms a great southern bend through the second chain of mountains. One hundred and thirty-six miles below, are the great falls, where the river descends in one rapid, fifty-seven feet. Below these falls, it winds first to the north-west and then to the south-west, and passes through the third chain of mountains, where it is again compressed to the width of one hundred and fifty yards. Below this rapid, at one hundred and eighty miles from the sea, it meets the tide, beyond which it has a broad estuary to the sea. Sixty miles below the rapids, _Multnomah_, a very large and unexplored tributary, falls in from the north-east. The mouth of the river is in latitude forty-six degrees and twenty-four minutes, and the tide there rises eight feet and a half. The Columbia and its tributaries abound in the finest salmon, which is said to form the principal food of the savages west of the Rocky Mountains. Seals and other aquatic animals are taken in this river in great numbers, and the skins shipped to China constitute the chief article of trade from this great river. A number of the head streams of the Missouri interlock with the waters of the Columbia. The whole course of the river is about one thousand five hundred miles. As this river waters an immense territory which has recently become a subject of great interest, we have subjoined, in a note, a partial account of its navigation, from the interesting work of Mr. Ross Cox.[13]