Book II. (Chapters XIV. to XXXII.)

observed changes in the inorganic world now in progress: first, the effects of aqueous causes, such as rivers, springs, glaciers, waves, tides, and currents; secondly, of igneous causes, or subterranean heat, as exhibited in the volcano and the earthquake.

CHAPTER XIV.

Aqueous causes—Excavating and transporting power of rivers

CHAPTER XV

Carrying power of river-ice—Glaciers and Icebergs

CHAPTER XVI.

Phenomena of springs

CHAPTER XVII

Reproductive effects of rivers—Deltas of lakes and inland seas

CHAPTER XVIII.

Deltas of the Mississippi, Ganges, and other rivers exposed to tidal action

CHAPTERS XIX. XX. XXI.

Denuding, transporting, and depositing agency of the waves, tides, and currents—Waste of sea-cliffs on the coast of England—Delta of the Rhine—Deposition of sediment under the influence of marine currents
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CHAPTER XXII.

Observed effects of igneous causes—Regions of active volcanoes

CHAPTERS XXIII. XXIV.

History of the volcanic eruptions of the district round Naples—Structure of Vesuvius—Herculaneum and Pompeii
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CHAPTER XXV.

Etna—Its eruptions—Structure and antiquity of the cone

CHAPTER XXVI.

Volcanoes of Iceland, Mexico, the Canaries, and Grecian Archipelago—Mud volcanoes

CHAPTER XXVII.

Earthquakes and the permanent changes attending them

CHAPTER XXVIII.

Earthquake of 1783 in Calabria

CHAPTER XXIX.

Elevation and subsidence of dry land, and of the bed of the sea during earthquakes—Evidence of the same afforded by the Temple of Serapis near Naples

CHAPTER XXX.

Elevation and subsidence of land in regions free from volcanoes and earthquakes—Rising of land in Sweden

CHAPTERS XXXI. XXXII.

Causes of earthquakes and volcanoes—Theory of central fluidity of the earth—Chemical theory of volcanoes—Causes of permanent upheaval and depression of land
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