There is a remarkable deposit of salt in the valley of Cardona, in the Pyrenees. Two thick masses of rock-salt, says Ansted, apparently united at their bases, make their appearance on one of the slopes of the hill of Cardona. One of the beds, or rather masses, has been worked, and measures about 130 yards by 250; but its depth has not been determined. It consists of salt in a laminated condition, and with confused crystalization. That part which is exposed is composed of eight beds, nearly horizontal, having a total thickness of fifteen feet; but the beds are separated from one another by red and variegated marls and gypsum. The second mass, not worked, appears to be unstratified, but in other respects resembles the former; and this portion, where it has been exposed to the action of the weather, is steeply scarped, and bristles with needle-like points, so that its appearance has been compared to that of a glacier. There is also an extensive salt-mine at Wieliczka, in Poland, and the manner of working it was accurately described some years since. The manner of descending into the mine was by means of a large cord wound round a wheel and worked by a horse. The visitor, seated on a small piece of wood placed in the loop of the cord, and grasping the cord with both hands, was let down two hundred feet, the depth of the first galleries, through a shaft about eight feet square, sunk through beds of sand, alternating with limestone, gypsum, variegated marls, and calcareous schists. Below the stage, the descent was by wooden staircases, nine or ten feet wide. In the first gallery was a chapel, measuring thirty feet in length by twenty-four in breadth, and eighteen in height; every part of it, the floor, the roof, the columns which sustained the roof, the altar, the crucifix, and several statues, were all cut out of the solid salt; the chapel was for the use of the miners. It had always been said that the salt in this mine had the qualities which produced magic appearances to an uncommon degree; but it is now ascertained that its scenery is not more enchanting than that of the mines in Cheshire. Gunpowder is now used in the Polish as in the English mines; but the manner of obtaining the salt at the time of the visit we are recording was peculiar, and too ingenious to be passed over, even though it be now superseded by the more modern and more successful mode of blasting. "In the first place, the overman, or head miner, marked the length, breadth, and thickness of a block he wished to be detached, the size of which was generally the same, namely, about eight feet long, four feet wide, and two feet thick. A certain number of blocks being marked, the workman began by boring a succession of holes on one side from top to bottom of the block, the holes being three inches deep, and six inches apart. A horizontal groove was then cut, half an inch deep, both above and below, and, having put into each of the holes an iron wedge, all the wedges were struck with moderate blows, to drive them into the mass; the blows were continued until two cracks appeared, one in the direction of the line of the holes, and the other along the upper horizontal line. The block was now loosened and ready to fall, and the workman introduced into the crack produced by the driving of the wedges a wooden ruler, two or three inches broad, and, moving it backward and forward on the crack, a tearing sound was soon heard, which announced the completion of the work. If proper care had been taken, the block fell unbroken, and was then divided into three or four parts, which were shaped into cylinders for the greater convenience of transport. Each workman was able to work out four such blocks every day, and the whole number of persons employed in the mine, varied from twelve hundred to about two thousand." The mine was worked in galleries; and, at the time of this visit, these galleries extended to at least eight English miles. Since then the excavations have become much more extensive.