The sources of the Washita are in a high and broken part of the Ozark mountains, in north latitude 34° 15´, and between 93° and 94° west longitude, and sixty or an hundred miles south-west of the settlement of Cadron on the Arkansa. From the same mountainous district descend towards the north-east the Petit Jean and Le Fevre, tributaries to the Arkansa; on {155} the north-west the upper branches of the Poteau; on the south-west the Kiamesha; and on the south-east the Mountain, Cossetot, Rolling Forks, and other streams, discharging into Little river of Red river.[42] The principal source of the Washita is said to be very near that of the Fourche Le Fevre, and to descend towards the west from the same hill, out of which flow the upper branches of the Le Fevre towards the east. These particulars are, however, of little importance, except as serving to illustrate the character of that portion of the country. The whole of that region is strictly mountainous, and its numerous streams are rapid and circuitous, winding their way among abrupt and craggy hills, so thinly covered with pine and post oak, that the sober gray of the sandstone is often the prevailing colour of the landscape. The hills, at the sources of the Poteau and the Kiamesha, abound in clay-slate, and a slaty petrosilex destitute of organic remains.[43] It is remarked by hunters, that the most remote and elevated sources of all the rivers of this region are joined in or near extensive woodless plains. As far as this is the case, it would seem to prove that the existing inequalities of the surface have been produced almost entirely by the currents of water wearing down and removing extensive portions of the horizontally stratified rocks. In districts where secondary rocks only are found, as in the country of the Ohio, there appears little difficulty in attributing this origin to all the hills; and even in the mountainous district under consideration, as the most recent rocks, and those of horizontal stratification, occupy the highest portions of the hills, we may perhaps be allowed to suppose they formerly covered a much greater extent of country than at present, overlaying those strata of more ancient deposition, which now appear upon the declivities of the mountains. It cannot escape {156} the remark of any person who shall visit the range of country, which we call the Ozark mountains, that the direction of the ridges, (particularly of those where sandstone is the prevailing rock,) conforms to the course of the principal streams.