CONTENTS.


PART I.

PRINCIPLES OF PALÆONTOLOGY.


INTRODUCTION.

The general objects or geological science--The older theories of
catastrophistic and intermittent action--The more modern doctrines
of continuous and uniform action--Bearing of these doctrines
respectively on the origin or the existing terrestrial
order--Elements or truth in Catastrophism--General truth of the
doctrine of Continuity--Geological time.

CHAPTER I.

Definition of Palæontology--Nature of Fossils--Different processes
of fossilisation.

CHAPTER II.

Aqueous and igneous rocks--General characters of the sedimentary
rocks--Mode or formation of the sedimentary rocks--Definition
of the term "formation"--Chief divisions of the aqueous
rocks--Mechanically-formed rocks, their characters and mode of