Pumice--Different Sorts of Lava--Obsidian--Olivine--Sulphur--Dust,
Ashes, &c.--Volcanic Silk--Volcanic Islands--Volcanic Fishes--Hot
Water, Mud, Vapours, &c.--Volcanic Storm--Explosions--Number of
Volcanoes--King of the Volcanoes--Artificial Volcano


CHAPTER II.

Volcanoes of Iceland--Mount Hecla--Earliest Eruption--Great
Eruption in 1845--Skaptar Yokul--Terrible Eruption in 1783--Rise
and Disappearance of Nyoe--Katlugaia--The Geysers--A very hot Bath
--Californian Geysers--Iceland-spar--Jan Mayen


CHAPTER III.

Mount Vesuvius--Origin of Name--Former Condition--Eruption of A.D.
79--Death of Pliny--Destruction of Pompeii and Herculaneum--
Appearance of the Mountain before and after Eruption--Formation of
Monte Nuovo--Eruption of Boiling Water--Coloured Vapours--Cascade
of Lava--Discovery of Remains of Herculaneum and Pompeii--The
Buildings of Pompeii--Street of Tombs--Skeletons--Sundry Shops--
Ascents of Vesuvius--Crater--Temple of Serapis


CHAPTER IV.

Mount Etna--Its Appearance and Height--Ancient Eruptions--Pindar's
Allusion--Virgil's Description--Subordinate Cones and Craters--
Caverns--Val de Bove--Formation of Monti Rossi--Eruption of 1852--