This edition features illustrations a linked Table of Contents, linked Footnotes, and linked Index CONTENTS (abridged list) 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 def