The eastern rampart range--the Blue Ridge--trends southward with the convolutions of a snake; its undulations rising seldom above a mile in altitude and sinking sometimes so low that, in passing through its wide gaps, one is not aware that he is crossing a mountain range, the fact being concealed by the parallel spurs rising, in many instances, to a higher altitude than their parent chain. In spite of its depressions, and, when compared with the Smoky mountains, the low average elevation of its crest, it is the water-shed of the system. Not a stream severs it. On the east every stream sweeps toward the Atlantic. On the west the waters of its slopes are joined at its base line by those flowing down the east or south side of the Smoky mountains; and, mingling with the latter, pour through the deep passes of the loftier range into the valley of the western confluent of the Tennessee. From the Blue Ridge is thrown off many short ranges, trending east and south across the submontane plateau. In character of outline they are similar to the parent chain. This plateau, known as the Piedmont, walled on the west by the Blue Ridge, diversified by mountains and hills, and seamed by the Yadkin, Catawba, and Broad rivers and their affluents, incloses in its limits many beautiful and fertile valleys. The outer slope of the Blue Ridge, overlooking Piedmont, is abrupt in its descent and presents wild and picturesque features; cascades marking the channels of the streams. Further south, where the range bends around the South Carolina and Georgia lines, bold escarpments of rock and ragged pine-set declivities, seamed by cataracts, and beaten on by a hot and sultry sun, break sheer off into the southern plains. The inner slope of the Blue Ridge throughout its entire length from Virginia to Georgia, as contrasted with the outer slope, is more gentle in its descent; is heavily wooded and diversified with clearings. The Smoky mountains present similar characteristics--richly wooded descents toward the central valley; rocky and sterile fronts toward Tennessee. The reader must not imagine that the central valley or plateau, of which we have been speaking, is a level or bowl-shaped expanse between the ranges described. On the contrary, its surface is so broken by transverse mountain ranges and their foot-hills that, by means of vision alone, the observer from no one point can obtain a correct idea of the structural character of the region. From the loftiest peaks, he can see the encircling ranges and the level lands beyond their outer slopes; but below him is rolled an inner sea of mountains, which, when looked upon in some directions, seems of limitless expanse. The transverse chains, comprising the Yellow mountain, the Black, Newfound, Balsam, Cowee, Nantihala, and Valley River mountains, hold a majority of the highest summits of the Alleghanies.