several hours of the day. There were also sudden and frequent thunder showers, but these were generally of short duration. These meteorological observations will perhaps lead to the conclusion, that this watering-place would not be advisable for persons laboring under pulmonic or dropsical affections, and I did not learn that any such had been benefited by their residence.

'Persons using these waters, are in the habit of drinking from three to four quarts in a day, and also of bathing twice. They generally remain in the bath from a half hour to an hour, and find it so pleasant they are loth to leave it. It was stated to me by a very respectable gentleman, who has resorted to this watering-place for several summers past, that after drinking the water freely for several days, it generally had a brisk cathartic effect for a day or two, and after that produced no sensible result. This gentleman is afflicted with chronic rheumatism, and has always obtained decided relief from the long continued use of the waters, both internally and externally. Upon the record book of the establishment there are sundry interesting cases of benefit, imparted to persons laboring under rheumatism, palsy, or loss of motion from other causes. I am inclined to believe that long continued bathing in water of such an elevated and constant temperature, must produce some effect in such cases as have been alluded to, independent of the mineral ingredients, and, conjoined with them, it will probably be more efficacious. The healthy, cheap, and plentiful country, in which the Buncome Springs are situated, the novel and mountainous scenery and variety of company, present many attractions to the invalid, the idler, and the curious.'

GENERAL REMARKS ON SPRINGS,

The most common ingredient of mineral and medicinal springs, is iron under a variety of forms. But they also often contain magnesia, glauber salt, carbonic acid gas, and other substances, which, from their combinations, give great diversity to the waters. Springs impregnated with sulphur are also common in the vicinity of volcanoes, and in countries subject to earthquakes. They are usually warm, and the heat is sometimes accompanied by a violent ebullition which frequently projects the water to a great height. Iceland, the Azores, and various other places, afford striking examples of this kind. The celebrated fountain called the Geyser, in the first of these islands, often propels its contents the height of one hundred feet, and sometimes to double that height.

There are also springs which are inflammable without being hot. This generally arises from a quantity of inflammable gas, or oily matter, which floats on the surface of the water; as in the instance of a brook in the vicinity of Bergerac, in the south of France, the surface of which may be set on fire by a lighted straw. Others, being mixed with bitumen, which often floats on the surface, will easily take fire, as at Baku, and other places in Persia.

The waters of some springs and lakes have a petrifying, and others an incrusting quality. The former is impregnated with extremely fine silicious particles, which penetrate the pores of the substances immersed in them, and change their nature. This property is possessed by Lough Neagh. The Danube and the Pregel have also the same quality, but in a less degree. The waters which possess the incrusting property operate in a more rapid and manifest manner, by depositing the earthy particles they hold in solution, on the surfaces of bodies submitted to their action. This effect is produced by both hot and cold springs, particularly by the former. The matter deposited is usually calcareous, but in the instance of the Great Geyser it is silicious.

Waters holding salt in solution, or muriated waters, as they are commonly called, are perhaps the most common of all; but they are rarely found in a state of purity. Among the Uralian and Carpathian mountains, they are frequent, and in general in the zone comprised between the parallels fifty and thirty north latitude. More to the north they are rarely found; farther toward the south crystallized salt is abundant in certain re gions, as in the great desert of Africa; but we find only a few salt springs there.

97

CHAPTER VIII.-CAVERNS.

THE most celebrated cave in the United States, is that in Rockingham County, Virginia, known by the name of Madison's Cave. It is in the heart of a mountain, about two hundred feet high, which is so steep on one side, that a person standing on the top, might easily throw a pebble into the river which flows round the base; the opposite side of it is, however, very easy of ascent, and on this side the path leading to the cavern runs, excepting for the last twenty yards, when it suddenly turns along the steep part of the mountain, which is extremely rugged, and covered with immense rocks and trees from top to bottom. The mouth of the cavern, on this steep side, about two thirds of the way up, is guarded by a huge pendant stone, which seems ready to fall every instant; it is impossible to stoop under it and not reflect with a degree of awe, that, were it to drop, nothing could save you from perishing within the dreary walls of that mansion to which it affords an entrance. The description which follows, is from the Travels

of Mr. Weld.

A

'Preparatory to entering, the guide, whom I had procured from a neighboring house, lighted the ends of three or four splinters of pitch pine, a large bundle of which he had brought with him: they burn out very fast, but while they last are most excellent torches. The fire he brought along with him, by the means of a bit of green hickory wood, which, when once lighted, will burn slowly without any blaze, till the whole is consumed. 'The first apartment you enter is about twenty-five feet high, and fifteen broad, and extends a considerable way to the right and left, the floor ascending toward the former; here it is very moist, from the quantity of water continually trickling from the roof. Fahrenheit's thermometer, which stood at sixty-seven degrees in the air, fell to sixty-one degrees in this room. few yards to the left, on the side opposite to you on entering, a passage presents itself, which leads to a sort of anti-chamber, from whence you proceed to the sound room, so named from the prodigious reverberation of the sound of a voice or musical instrument on the inside. This room is about twenty feet square; it is arched at the top, and the sides of it as well as of the apartment which you first enter, are beautifully ornamented with stalactites. Returning from hence into the anti-chamber, and afterwards taking two or three turns to the right and left, you enter a long passage about thirteen feet wide, and, perhaps, about fifteen feet in height, perpendicularly; but if it was measured from the floor to the highest part of the roof obliquely, the distance would be found much greater, as the walls on both sides slope very considerably, and finally meet at the top.

This passage descends very rapidly, and is, I should suppose, about sixty yards long. Towards the end it narrows considerably, and terminates in a pool of clear water, about three or four feet deep. How far this pool extends, it is impossible to say. A canoe was once brought down by a arty for the purpose of examination, but they said, that after proceeding a little way the canoe would not float, and they were forced to return.

Their fears most probably led them to fancy so. I fired a pistol with a ball over the water, but the report was echoed from the after part of the

cavern, and not from the part beyond the water, so that I should not suppose the passage extended much farther than could be traced with the eye. The walls of this passage consist of a solid rock of limestone on each side, which appears to have been separated by some convulsion. The floor is of a deep sandy earth, and it has repeatedly been dug up for the purpose of getting salt-petre, with which the earth is strongly impregnated. The earth, after being dug up, is mixed with water, and when the grosser particles fall to the bottom, the water is drawn off and evaporated; from the residue the salt-petre is procured. There are many other caverns in this neighborhood; and also farther to the westward in Virginia; from all of them great quantities of salt-petre are thus obtained. The gunpowder made with it, in the back country forms a principal article of commerce, and is sent to Philadelphia in exchange for European manufactures.

'About two thirds of the way down this long passage just described, is a large aperture in the wall on the right, leading to another apartment, the bottom of which is about ten feet below the floor of the passage, and it is no easy matter to get down into it, as the sides are very steep and extremely slippery. This is the largest and most beautiful room in the whole cavern ; it is somewhat of an oval form, about sixty feet in length, thirty in breadth, and in some parts nearly fifty feet high. The petrifactions formed by the water dropping from above are most beautiful, and hang down from the ceiling in the form of elegant drapery, the folds of which are similar to what those of large blankets or carpets would be, if suspended by one corner in a lofty room. If struck with a stick, a deep hollow sound is produced, which echoes through the vaults of the cavern.

'In other parts of this room the petrifactions have commenced at the bottom, and formed in pillars of different heights; some of them reach nearly to the roof. If you go to a remote part of this apartment, and leave a person with a lighted torch moving about amidst these pillars, a thousand imaginary forms present themselves, and you might almost fancy yourself in the infernal regions, with spectres and monsters on every side. The floor of this room slopes down gradually from one end to the other, and terminates in a pool of water, which appears to be on a level with that at the end of the long passage; from their situation, it is most probable that they communicate together. The thermometer which I had with me stood in the remotest part of this chamber, at fifty-five degrees. From hence we returned to the mouth of the cavern, and on coming to the light it appeared as if we had really been in the infernal regions, for our faces, hands, and clothes were covered with soot from the smoke of the pine torches which are so often carried in. The smoke from the pitch-pine is particularly thick and heavy. Before this cave was much visited, and the walls blackened with smoke, its beauty, I was told by some of the old inhabitants, was great indeed; for the petrifactions on the roof and walls are all of a dead white kind.'

Wyer's Cave is situated in the same county with the preceding, and is equally remarkable. Its entrance is narrow and difficult, and when first discovered was impeded by perpendicular columns of stalactites, which have since been removed. After advancing at first in a horizontal course, we descend into an echoing cavern, by a ladder fifteen or twenty feet in length. Over our heads hang silvery white stalactites, while we are surrounded by pillars of stalagmites, and rugged walls incrusted with a beautiful brown

spar. The floor is composed of ledges of rocks, and presents rather an uneven pathway.

Advancing through a narrow passage in the rocks, we enter still other apartments, resembling the first in the beauty of their formations, but of different shape and extent. The sparry incrustations assume a thousand fantastic figures, sparkling with light, and more like the wonders of fairy land, than the original productions of nature. This cave is a mile and a half in extent, varying in perpendicular height from three to forty feet, and in breadth from two to thirty. Its dividing branches are numerous. Blue limestone is the base of the whole cave; every where covered with incrustations of carbonates. In some places the uneven sides of the rocks are quite covered with white crystals of the carbonate of lime, and appear like banks of salt. Sometimes the pavement sparkles as a floor of diamonds; and again the pathway is pebbled, and resembles the deserted bed of a river. It is impossible to convey any idea of the number and variety of shapes which the stalactites assume; resembling every thing in nature, and in the worlds of imagination, they are still unlike every thing but themselves.

The Nicojack Cave is situated in the Cherokee country, at Nicojack, the north-western angle in the map of Georgia. We believe it was first fully described by the Rev. E. Cornelius. It is twenty miles south-west of the Look-Out Mountain, and half a mile from the south bank of the Tennessee river. The Raccoon Mountain, in which it is situated, here fronts to the north-east. Immense layers of horizontal limestone form a precipice of considerable height. In this precipice the cave commences; not however with an opening of a few feet, as is common; but with a mouth fifty feet high, and one hundred and sixty wide. Its roof is formed by a solid and regular layer of limestone, having no support but the sides of the cave, and as level as the floor of a house. The entrance is partly obstructed by piles of fallen rocks, which appear to have been dislodged by some great convul sion. From its entrance, the cave consists chiefly of one grand excavation through the rocks, preserving for a great distance the same dimensions as at its mouth.

What is more remarkable than all, it forms for the whole distance it has yet been explored, a walled and vaulted passage for a stream of cool and limpid water, which, where it leaves the cave, is six feet deep and sixty feet wide. A few years since, Col. James Ore, of Tennessee, commencing early in the morning, followed the course of this creek in a canoe, for three miles. He then came to a fall of water, and was obliged to return, without making any further discovery. Whether he penetrated three miles of the cave or not, it is a fact he did not return till the evening, having been busily engaged in his subterranean voyage for twelve hours. He stated that the course of the cave, after proceeding some way to the south-west, became south; and south-east by south, the remaining distance.

There is a remarkable cave or grotto, situated on a bluff of limestone, on the south bank of the Holston river, in East Tennessee, which has been well described by Mr. Kain, in an article in Silliman's Journal. The bluff is perhaps one hundred feet high, and fifty wide. The grotto is a large natural excavation of the rock, sixty feet high and thirty feet wide. It is very irregular, and to the very top bears marks of the attrition of waves. The river to have been so high, must have covered the valley through

which it now winds its quiet way. The excavation gradually diminishes in size as you proceed backward, till one hundred feet from the entrance it terminates. A remarkable projection of the rock divides the back part

into two stories.

This grotto, whose walls are hung with ivy, and the bluff crowned with Cedars, and surrounded by an aged forest, on which the vine clambers most luxuriantly, viewed from the river which winds slowly around it, and reflects its image, is more than beautiful: it is even venerable. But what renders it most interesting to many visitors, is a number of rude paintings, which were, as tradition reports, left on it by the Cherokee Indians. These Indians are known to have made this cave a resting place as they passed up and down the river Holston. These paintings are still distinct, though they have faded somewhat within my remembrance. They consist of representations of the sun and moon, of a man, of birds, fishes, &c. They are all of red paint, and resemble, in this respect, the paintings on Paint Rock, near the warm springs.

Mammoth Cave is situated near the Green river in Kentucky, the entrance to which is by a pit forty feet deep, and one hundred and twenty in circumference. At the bottom of this pit is the mouth of the cave, which is open to the north, and is from forty to fifty feet in height, and thirty in width, for upwards of forty rods, when it becomes not more than ten feet wide and five feet high. "However," says Dr. Wood, "this continues but a short distance, when it expands to thirty or forty feet in width, and is about twenty feet in height, for about one mile, until you come to the first hopper, where salt-petre is manufactured. Thence it is about forty feet in width, and eighty in height, till you arrive at the second hopper two miles from the mouth. The loose limestone has been laid up into handsome walls on either side, almost the whole distance from the entrance to the second hopper. The road is hard, and as smooth as a flag pavement. The walls of the cavern are perpendicular in every passage that I traversed; the arches are regular in every part, and have bid defiance even to earthquakes. As you advance into the cave, the avenue leads from the second hopper west one mile, then south-west to the chief city, which is six miles distant from the entrance. This avenue is from sixty to one hundred feet high, and about the same broad, the whole distance from the second hopper, until you come to the cross-roads or chief city; and is nearly upon a level, the floor or bottom being covered with loose limestone and salt-petre earth. When I reached the immense area, (chief city,) containing upward of eight acres, without a single pillar to support the arch, which is entire over the whole, I was struck dumb with astonishment, and can give but a very faint idea of its splendor. Nothing under heaven can be more sublime and grand than this place, covered with one solid arch, at least one hundred feet in height, and to all appearance entire. After entering the chief city, I perceived five avenues leading out of it, from sixty to one hundred feet in width, and from forty to eighty in height. The walls (all of stone) are arched, being from forty to eighty feet of perpendicular height, before the arch commences.

་

The next avenue which I traversed, after cutting arrows on the stones under our feet, pointing to the mouth of the cave, was one that led us in a southerly direction for more than two miles. We then left it, and took another that led us east, then north, more than two miles farther; and at