July, 1841.
Principles, 7th edition in one vol. 8vo Feb. 1847.
----------, 8th edition in one vol. 8vo May, 1850.
Manual of Elementary Geology (or "Elements," 3d edition)
in one vol. 8vo Jan. 1851.
Manual, 4th edition, one vol. 8vo Jan. 1852.
Principles, 9th edition, now published in one vol. 8vo June, 1853.

ANALYSIS OF THE CONTENTS
OF
THE PRINCIPLES OF GEOLOGY.

BOOK I. (CHAPTERS I. TO XIII.)

HISTORICAL SKETCH OF THE PROGRESS OF GEOLOGY, WITH A SERIES OF
ESSAYS TO SHOW THAT THE MONUMENTS OF THE ANCIENT STATE OF THE
EARTH AND ITS INHABITANTS, WHICH THIS SCIENCE INTERPRETS, CAN
ONLY BE UNDERSTOOD BY A PREVIOUS ACQUAINTANCE WITH TERRESTRIAL
CHANGES NOW IN PROGRESS, BOTH IN THE ORGANIC AND INORGANIC
WORLDS.

CHAPTER I.
Geology defined--Its relation to other Sciences Page 1

CHAPTER II.
Oriental and Egyptian Cosmogonies--Doctrines of the Greeks
and Romans bearing on Geology 4

CHAPTER III.
Historical progress of Geology--Arabian Writers--Italian,
French, German, and English geologists before the 19th
century--Physico-theological school 17

CHAPTER IV.
Werner and Hutton--Modern progress of the science 46

CHAPTER V.
Prepossessions in regard to the duration of past time,
and other causes which have retarded the progress
of Geology 61

CHAPTER VI.
Agreement of the ancient and modern course of nature
considered--Changes of climate 73

CHAPTERS VII. VIII.
Causes of vicissitudes in climate, and their connection
with changes in physical geography 92, 114

CHAPTER IX.
Theory of the progressive development of organic life
at successive periods considered--Modern origin of Man 130

CHAPTER X.
Supposed intensity of aqueous forces at remote
periods--Erratic blocks--Deluges 153

CHAPTER XI.
Supposed former intensity of the igneous forces--Upheaval
of land--Volcanic action 160

CHAPTER XII.
Causes of the difference in texture of older and newer
rocks--Plutonic an