One of our first objects, after examining the neighbourhood, was to remove our baggage and location up the glen, into one of these caves, which at the distance of about a mile, promised us an effectual shelter from the inclemency of the storm. This done, we determined here to wait for settled weather, and explore the precincts. By far the most prominent object, among the caverns, was the one into which we had thus unceremoniously thrust ourselves. It had evidently been visited before, by persons in search of saltpetre earth. Efflorescences of nitric earth, were abundant in its fissures, and this salt was also present in masses of reddish diluvial earth, which lay in several places. The mouth of this cave presented a rude irregular arc, of which the extreme height was probably thirty feet, and the base line ninety. The floor of this orifice occurs, at an elevation of about forty feet above the stream. And this size is held for about two hundred feet, when it expands into a lofty dome, some eighty or ninety feet high, and perhaps, three hundred in diameter. In its centre a fine spring of water issues from the rock. From this dome several passages lead off in different directions. One of these opens into the glen, at an inaccessible point, just below. Another runs back nearly at right angles with the mouth, putting out smaller passages, of not much importance, however, in its progress. So splendid and noble an entrance gave us the highest hopes of finding it but the vestibule of a natural labyrinth; but the result disappointed us. These ample dimensions soon contract, and after following the main or south passage about five hundred yards, we found our further entrance barred, by masses of fallen rock, at the foot of which a small stream trickled through the broken fragments, and found its way to the mouth. Have we good reason to attribute to this small stream, a power sufficient to be regarded as the effective agent in carrying away the calcareous rock, so as to have in a long period produced the orifice? Whence then, it may be asked, the masses of compact reddish clay and pebble diluvium, which exist? These seem rather to denote that these caves were open orifices, during the period of oceanic action, upon the surface of the Ozarks, and that a mass of waters, surcharged with such materials, flowed into pre-existing caverns. This diluvium is, in truth, of the same era as the wide spread stream of like kind, which has been deposited over the metalliferous region of Missouri. If these, however, be questions for geological doubt, we had lit upon another inquiry, very prominent on our minds in making this exploration, namely, whether there were any wild beasts sheltered in its fissures. Satisfied that we were safe on this score, we retraced our footsteps to our fire, and sallied out to visit other caves. Most of these were at such heights as prevented access to them. In one instance, a tree had fallen against the