The Icelandic volcanoes may be divided into three classes: (I) cone-shaped, like Vesuvius, built up of alternate layers of ashes, scoriae and lava; (2) cupola-shaped, with an easy slope and a vast crater opening at the top - these shield-shaped cupolas are composed entirely of layers of lava, and their inclination is seldom steeper than 7°-8°; (3) chains of craters running close alongside a fissure in the ground.
According to Lyell, Etna is rather older than Vesuvius - perhaps of the same geological age as the Norwich Crag.
Vesuvius (q.v.), the volcanic forces of which had been slumbering for unknown ages, suddenly burst into violent eruption, which, while it carried devastation all around the beautiful gulf, buried the two cities of Herculaneum and Pompeii under dense beds of cinders and ashes.
The white muscat wines of Vesuvius are also of good quality, and the island of Capri produces some excellent wine.
In 1839 he went to Naples and was soon appointed director of the Vesuvius observatory, a post which he held until 1848.
On his pages, close beside the Parthenon, the Sphinx, St Paul's, Etna and Vesuvius, you will find the White Mountains, Monadnock, Agiocochook, Katandin, the pickerelweed in bloom, the wild geese honking through the sky, the chick-a-dee braving the snow, Wall Street and State Street, cotton-mills, railroads and Quincy granite.
Of other scientific institutions we may mention the observatory on Vesuvius, which is supported entirely by funds from the government, but is annexed informally to the university.
VESUVIUS (also Vesevus in ancient poems), a volcano rising from the eastern margin of the Bay of Naples in Italy, about 7 m.
This eminence is itself due to an outflow of lava from that mountain, during some previous eruption in prehistoric times, for we know from Strabo that Vesuvius had been quiescent ever since the first records of the Greek settlements in this part of Italy.
The brief notices of the classical writers inform us that Herculaneum' was a small city of Campania between Neapolis and Pompeii, that it was situated between two streams at the foot of Vesuvius on a hill overlooking the sea, and that its harbour was at all seasons safe.
The best of these is the celebrated Lacrima Christi, which is grown on the slopes of Vesuvius from a vine bearing the same name.
Specular iron ore occurs in the form of brilliant metallic scales on many lavas, as at Vesuvius and Etna, in the Auvergne and the Eifel, and notably in the Island of Ascension, where the mineral forms beautiful tabular crystals.
Then he went to Rome and Naples and visited Vesuvius and Pompeii, called on Volta at Milan, spent the summer in Geneva, and returning to Rome occupied the winter with an inquiry into the composition of ancient colours.
Closely related to magnetite is the rare volcanic mineral from Vesuvius, called magnoferrite, or magnesioferrite, with the formula MgFe 2 O 4; and with this may be mentioned a mineral from Jakobsberg, in Vermland, Sweden, called jakobsite, containing MnFe204.
TORRE ANNUNZIATA, a seaport of Campania, Italy, in the province of Naples, on the east of the Bay of Naples, and at the south foot of Mt Vesuvius, 14 m.
It is on the main line to Battipaglia, at the point of junction of a branch line from Cancello round the east of Vesuvius, and of the branch to Castellammare di Stabia and Gragnano.
NOLA, a city and episcopal see of Campania, Italy, in the province of Caserta, pleasantly situated in the plain between Mount Vesuvius and the Apennines, 164 m.