CHANGES OF MOUNT ETNA.
Signor Maria Gemmellario has given, from a meteorological journal kept at Catania, a very interesting view of the successive changes of Mount Etna, at a period in which it was in the phase of moderate activity; and no description could convey so accurate a conception of the ever-changing phenomena.
On the 9th of February, 1804, there was a sensible earthquake. Etna smoked ninety-seven days, but there was no eruption nor any thunder.
On the 3rd of July, 1805, there was an earthquake. Etna smoked forty-seven days, and emitted flame twenty-eight days. There was an eruption in June, but no thunder.
There were earthquakes on the 27th of May and 10th of October, 1806. The mountain smoked forty-seven days, flamed seven, and detonated twenty-eight: little thunder.
On the 24th of February and 25th of November, 1807, there were earthquakes. Etna smoked fifty-nine days: little thunder.
In August, September, and December, 1808, earthquakes were frequent. Etna smoked twelve days, flamed one hundred and two, and often detonated. Thunder storms were frequent.
From January to May, and during September and December, 1809, there were thirty-seven earthquakes. The most sensible shock was on the 27th of March, when the mountain ejected lava on the western side. This eruption lasted thirteen days, and part of the Bosco di Castiglione was injured. The mountain smoked one hundred and fifty-two days, flamed three, and detonated eleven. Little thunder.
On the 16th and 17th of February, 1810, there were four earthquakes. On the 27th of October, Etna was in a state of eruption on the eastern side, and the lava flowed into the Valle del Bue. There were about twenty thunder storms.
1811, no earthquakes, but the mountain continued until the 24th of April to eject lava from the east. At this time the Mount St. Simon was formed. No thunder.