Having mistaken the route we had been directed to follow, we were bewildered during a considerable part of the day, wandering about through a fertile country without settlements, and so covered with dense forests as to render the travelling exceedingly harassing. Towards evening we arrived at a settlement of Cherokees, where we engaged a guide to conduct us to the trace leading to the springs. For this service we paid him two dollars. At night we encamped in an open forest of oak, where we found a sufficient supply of grass for our horses. The hills south of the Arkansa range from N.E. to S.W. , their sides are sometimes nearly naked, but more commonly covered with small and scattered trees. Several kinds of oak, and the chinquapin (castanea pumila, Ph.) attaining the dimensions of a tree, are met with in the sandstone tracts. We distinguished here, in the uplands, two separate varieties of soil. That just mentioned, based upon a compact hard sandstone, and bearing forests of oak, and another resting upon a white petrosiliceous rock, with fragments of which it is much intermixed. This latter is often covered {149} with pine forests. The most common species, yellow pine (P. resinosa,) attains unusual magnitude. The rigida, and some other species occur, but are not frequent. We also observed several species of vaucinum, the mitchella, the kalmia latifolia, hamamelis virginica? cunila mariana, and many other plants common to this region and the Alleghany mountains. There are no settlements between those of the Cherokees about Derdonai on the Arkansa and the hot springs. The blind path which we followed traverses a rugged and mountainous region, having considerable resemblance, except in the want of parallelism in the ranges, to the sandstone portions of the Alleghanies. As the weather was rainy we felt the inconvenience of travelling in the wilderness and encamping without tents. On the 28th we arrived at the hot springs. The country near these, on the north and north-west, is high and rocky. The sandstone, which extends from the Arkansa to within a few miles to the springs, becomes, as you go south, something inclined, and apparently of a more ancient deposition, until it is succeeded by a highly inclined primitive argillite. Both these rocks are traversed by large veins of white quartz. They are inclined towards the south, and the argillite at a great angle. In some localities it is but indistinctly slaty in its structure, and its laminæ are nearly perpendicular.