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Mexican Cave.-Caves of Missouri

the arch without to its highest part, twenty feet; interior length of the cave from the entrance to the extremity, one hundred and forty feet; height of the tallest columns on the right side of the entrance, fortyfive feet; depth of the sea in the interior part of the cave , ten feet nine inches, in some places eight feet, and towards the bottom somewhat less CAVE NEAR MEXICO. - A traveller of credit gives us an account, in the Philosophical Transactions, of a remarkable cave, some leagues to the north-west of Mexico, gilded all over with a sort of leafover with a sort of leaf-gold, which had deluded many colour, but they could never reduce it into a body, either by quicksilver or fusion. This traveller went thither one morning with an Indian for his guide, and found its situation was pretty high, and in a place very proper for the generation of metals.

As he entered into it, the light of the candle soon discovered on all sides, but especially over his head, a glittering canopy of these mineral leaves , at which he greedily snatching, there fell down a great lump of sand, that not only put out his candle, but almost blinded him, and calling aloud to his Indian, who stood at the entrance of the cave, as being afraid of spirits and hobgoblins , it occasioned such thundering and redoubled echoes, that the poor fellow, imagining he had been wrestling with some infernal ghosts, soon quitted his station, and thereby left a free passage for some rays of light to enter, and serve him for a better guide. The traveller's sight was somewhat affected by the corrosive acrimony of the mineral dust; but having relighted his candle, he proceeded in the cave, heaped together a quantity of the mineral mixed with sand, and scraped off from the surface of the earth some of the glittering leaves , none of which exceeded the breadth of a man's nail, but with the least touch were divided into many lesser spangles, and with a little rubbing they left his hand gilded all over.

We must not neglect to notice THE NITRE CAVES OF MISSOURI.-" On the banks of the Merrimack and the Gasconade are found numerous caves, which yield an earth impregnated largely with nitre , which is procured from it by lixiviation. On the head of Current's river are also found several caves from which nitre is procured, the principal of Cave Creek, about eighty miles south-west of Potosi. This is one of those stupendous and extensive caverns, that cannot be viewed without exciting our wonder and astonishment, which is increased by beholding those complete works for the manufacture of nitre, situated in its interior 3 M "The native nitrate of potash is found in beautiful white crystals, investing the fissures of the limestone rock which forms the walls of this cave; and several of those in its vicinity exhibit the same phenomenon." -Schoolcroft , on the Lead Mines of Missouri OKEY HOLE.- This is a famous natural cavern of England, on the south side of Mendip hills. The entrance is in the fal of those hills, which is beset all about with rocks, and there is near it a precipitate descent of twelve fathoms deep, at the bottom of which there continually issues from the rocks a considerable current of water. The naked rocks above the entrance are about thirty fathoms high, and the whole ascent of the hill above, which is very steep, is about a mile. The entrance into this vault is at first upon a level, but advancing farther, the way is rocky and uneven, sometimes ascending, and sometimes descending .

The roof of this cavern, in the highest part, is about eight fathoms from the ground, but in many places it is SO low, that it is so low, that one must stoop to get along. The breadth is not less various than the height, for in some places it is five or six fathoms wide, and in others not more than one or two. It is in length about two hundred yards. At the farthest part of the cavern there is a stream of water, large enough to drive a mill, which passes all along one side of the cavern, and at length slides down about six or eight fathoms among the rocks, and, finding its way through the clefts, falls into the valley beneath. The river within the cavern is well stored with eels, and has some trouts. In dry summers, a great number of frogs are seen all along this cavern, even to the farthest part of it; and on the roof are vast numbers of bats.

From Okey Hole we proceed to BORROWDALE,-which is a most romantic valley among the Derwent -Water Fells, in the county of Cumberland. These fells or hills are some of the loftiest in England, and it is in one of them that the black lead, or wadd, is found, from which all parts of the world are supplied. The mines are opened once in seven years, and when a sufficient quantity of this valuable and singular mineral is taken out, they are carefully closed again. In travelling among these mountains, the idea that presents itself to the astonished spectator, is that of the earth having been agitated like the ocean in a storm; the hills appear like waves, one behind another, and were it not for the abrupt and sudden scarps, and the immense masses of rugged rocks, that give the idea of fixedness and stability, the fancy might be bewildered so far as to imagine they were in a state of undulation, and ready to mingle with each other.