{99} This stream is the first deserving notice, which enters the Missouri from the north. Its sources are several miles to the north-west of those of the Cuivre. In its valley the rocky substrata of the plain are exposed, for an extent of many miles. Near Van Babber's,[59] where we arrived a little before sunset on the 6th, there is, in the middle of the creek, a large brine spring. Over this has been placed a section of the hollow trunk of a tree, to prevent the intermixture of the fresh water of the creek.
The sandstone, from which this spring issues, is granulated and glimmering, like that about the old lead mines of St. Michael.[60] Like that, it is in horizontal strata, and exhibits sufficient evidence of being a continuation of the same stratum. Perceiving the same indications of fossil coal, lead, and other minerals here, as were known to exist in the same range of country on the other side of the Missouri, we listened with a credulity which seemed rather to disappoint and surprise our host, to his account of the phenomena that had appeared from time to time in his neighbourhood. The combustion of a coalbed, or the decomposition of a mass of pyrites, has, we believe, given rise to many more astonishing stories than he related.
He gave an account of several luminous appearances that had been seen at the breaking up of winter, or in unusually rainy seasons, or at other times of the year. These had been witnessed by many persons of unquestionable veracity; but so great had been their terror on the occasion, that they could never afterwards recollect the precise spot where the light had appeared to them. He told us of two itinerant preachers, who had encountered an indescribable phenomenon, at a place about nine miles east of Loutre lick. As they were riding side by side at a late hour in the evening, one of them requested the other to observe a ball of fire attached {100} to the end of his whip. No sooner was his attention directed to this object, than a similar one began to appear on the other end of the whip. In a moment afterwards, their horses and all objects near them were enveloped in wreaths of flame. By this time the minds of the itinerant preachers were so much confounded, that they were no longer capable of observation, and could therefore give no further account of what happened. He also stated as a fact, authenticated by many credible witnesses, that a very considerable tract of land near by, had been seen to send up vast volumes of smoke, which rose through the light and porous soil, like the smoke through the covering of a coal-pit. This had in one instance been witnessed by a son of the celebrated Col. Boon, and was at first mistaken for a prairie on fire. This phenomenon also occurs at the breaking up of winter, or at such seasons as the earth is drenched by uncommon quantities of rain.
Within a few miles of the lick, are eight or nine rude furnaces, disposed in the direction of a straight line, extending about two miles. He stated, that it was not known by whom, or when they were built, nor could it be ascertained for what purpose. It was evident they had been used; but no slag cinders or any thing of the kind had ever been found, nor was it possible to conjecture for what purpose the furnaces had been constructed. We regarded all these accounts, and many others of a similar character, as a sort of traditionary evidence of the accidental discovery, at some former time, of lead, coal, or pyrites; and that this discovery, by the ignorance and credulity of the people, had been magnified into an object, to which they had at length learned to ascribe a mysterious and indefinite importance.
Immediately about Loutre lick the surface was rocky and uneven; low cliffs of light gray sandstone, fringed with tufts of the dark green pteris atropurpurea, and the black striped asplenium, overhung {101} the margin of the brook, where the inconspicuous flowers of the prinos lævigatus and zanthoxylon fraxineum, and the blue spikes of the amorpha fruticosa, were just expanding.
Beyond Loutre lick the road traverses longitudinally that great woodless plain, thirty miles in length, called the Grand Prairie. It varies in width from one to ten or fifteen miles. The soil is deep and fertile, closely covered with grasses, interspersed with a proportion of gaudy euchromias and lichnedias, with the purple and yellow pedicularia, the tradescantia, and many beautiful astragali.
At Thrall's settlement,[61] sixty miles above Loutre lick, the floerkea proserpinacoides[62] is found in great abundance in open fields and by the road side, reclining its flexile and delicate stem upon the species of bidens, polygonum, &c. common in such situations. It grows much larger here than at Albany, the only locality where we have met with it east of the Mississippi; and its leaves, instead of being quinate, are usually composed of six leafits. In neither place does it show any preference to marshy grounds, as the newly-proposed name, palustris, would seem to imply. Our course, inclining considerably towards the Missouri, made it necessary to leave the elevated region of the plains, and betake ourselves to the forests, soon after passing the Grand Prairie. In these forests the linden, the hop-horn beam, maple, beech, and ash, attain an uncommon magnitude. The blue beech (ostrya virginica) sometimes occurs, and is of a larger growth than in New England.
Extensive and very accessible beds of coal have been opened near Thrall's plantation. The inhabitants assert that, in sinking wells, the trunks of large trees have been met with at a great depth below the surface. We could, however, discover no satisfactory {102} confirmation of this statement. The soil appeared to us to exhibit no evidence of having been disturbed at any period since the deposition of the coal beds and the accompanying sandstones.
On the 8th of June we arrived at Franklin. Here we delayed several days, in the expectation of receiving from Washington some further instructions, and the supply of funds necessary for the prosecution of the duties of the expedition. Having anxiously awaited one weekly arrival of the mail, and being disappointed of the expected communications, Major Long resolved to continue the journey, and to proceed in the accomplishment of the services assigned him, as far as the means then at his command would allow. As the great part of our proposed route to Council Bluff lay through the wilderness, we now thought it necessary to procure two horses, in addition to those we already had; one of them to be loaded with provisions, and the other for the use of a man whom we had engaged to accompany us.
We left Franklin on the 14th; and proceeding by a rugged and circuitous road across a tract of hilly forests, arrived at Charaton the same evening.