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Updated: June 25, 2025
My idea of the mode of its destruction was this: first an earthquake came and shattered it, and unroofed almost all its temples and split its columns; then a rain of light small pumice-stones fell; then torrents of boiling water mixt with ashes filled up its crevices.
The colour of the pumice-stones of the Peak leads to another important observation.
Scorched and blackened pumice-stones and bits of rock split by fire were mingled with them. The sea suddenly became shallow, and fragments from the mountain filled the coast seeming to bar all further progress.
The walls of the Palatine hill and of the Capitoline citadel were built of material quarried on the spot a mixture of charred pumice-stones and reddish volcanic sand. The quarries used for the fortification of the Capitol were located at the foot of the hill toward the Argiletum, and were so important as to give their name, Lautumiae, to the neighboring district.
He was now so nigh the mountain that the cinders, which grew thicker and hotter the nearer he approached, fell into the ships, together with pumice-stones, and black pieces of burning rock; they were in danger of not only being left aground by the sudden retreat of the sea, but also from the vast fragments which rolled down from the mountain, and obstructed all the shore.
A friend once brought me, when I lived at Santarem, a large piece which had been found in the middle of the stream below Monte Alegre, about 900 miles further down the river; having reached this distance, pumice-stones would be pretty sure of being carried out to sea, and floated thence with the northwesterly Atlantic current to shores many thousand miles distant from the volcanoes which ejected them.
However, he soon found out that they had, and to his cost. When he got near the opposite shore some of the sailors met him and entreated him to turn back. Cinders and pumice-stones were falling down from the sky, and flames breaking out of the mountain above.
Its sides are thin and sloping, it is from sixty to eighty feet deep, and the whole surface is strewn with fragments of obsidian, pumice-stones, and lava. Sulphureous vapour, forming a kind of crown of smoke, is emitted from it, whilst the atmosphere at the bottom is perfectly cool.
The experiments of M. da Camara, and those I made in 1802, tend to support the opinion, that the pumice-stones adherent to the obsidians of the Peak of Teneriffe do not unite to them accidentally, but are produced by the expansion of an elastic fluid, which is disengaged from the compact vitreous matter.
He was now so close to the mountain that the cinders, which grew thicker and hotter the nearer he approached, fell into the ships, together with pumice-stones and black pieces of burning rock: they were in danger too not only of being aground by the sudden retreat of the sea, but also from the vast fragments which rolled down from the mountain and obstructed all the shore.
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