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Consequently, those pyramidal mountains, though composed of such different materials, may, at a certain distance, where smaller characteristic distinctions may not be perceivable, appear to be of the same kind; and this indeed they truly are, so far as having their general shape formed upon the same principle. We come now to treat of insulated mountains. Here volcanos must be mentioned as a cause.
For instance, when the earth shook the other day round the volcanos of Quito, it shook also round the volcanos of Peru, though they were 600 miles away. And there are many stories of earthquakes being felt, or awful underground thunder heard, while volcanos were breaking out hundreds of miles away. I will give you a very curious instance of that.
Augustine, and Volcanos, and situated south of the Bonin-Sima group. Then crossing the Formosa Channel, he arrived at Macao on the 21st November. He was a good deal surprised not to find the Neva there, as he had given instructions for it to bring a cargo of furs, the price of which he proposed expending on Chinese merchandise. He decided to wait for the arrival of the Neva.
Numberless facts could be adduced to prove that upraised organic remains are common wherever there are active volcanos; but until it could be shown that in areas of subsidence, volcanos were either absent or inactive, the inference, however probable in itself, that their distribution depended on the rising or falling of the earth's surface, would have been hazardous.
For there are no volcanos in England. Yes. There are such things in the soil; and little enough of them, as the farmers here know too well.
Orizaba is the great feature in the scenery of this district of Mexico. It is one point in the line of volcanos which stretches across the continent from east to west. It is a conical mountain, like Popocatepetl, and about the same height; measurements vary from twenty feet higher to sixty feet lower. The crater has fallen in on one side, leaving a deep notch clearly visible from below.
Some men, cutting wood near the base of one of these volcanos, did not perceive the shock of the 20th, although the whole surrounding Province was then trembling; here we have an eruption relieving and taking the place of an earthquake, as would have happened at Concepcion, according to the belief of the lower orders, if the volcano at Antuco had not been closed by witchcraft.
The power appointed for this purpose is, as on all other occasions, where the operation is important, and where there is any danger of a shortcoming, wisely provided in abundance; and there are contrived means for disposing of the redundancy. These, in the present case, are our volcanos.
It was a sight that appalled Bob, who declared that he felt as though looking into the crater of some vast volcano. "Well," remarked Frank, "they did have volcanos around here, after this canyon was pretty well formed, though perhaps thousands of years ago. Great beds of lava have been found down in the bottom of the hole, so my little guide book tells me.
You will see in it many red dots, which mark the volcanos which are still burning: and black dots, which mark those which have been burning at some time or other, not very long ago, scattered about the world. Sometimes they are single, like the red dot at Otaheite, or at Easter Island in the Pacific.
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