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CONTENTS.
| CHAPTER I. | |
| INTRODUCTORY VIEWS. | |
| Page | |
| Objects of Geological Science | 1 |
| Means of Geological Investigation | 6 |
| Scale of Geological Time | 8 |
| Series of Stratified Rocks | 9 |
| Lapse of Time inferred from the Nature of the Series of Rocks | 10 |
| Antiquity of the Surface | 11 |
| Nature of the Scale of Time | 12 |
| Terms of the Scale of Geological Time | 12 |
| Series of Terms on the Scale of Geological Time | 14 |
| Interruptions in the Series of Time | 16 |
| Length of the Scale of Time | 17 |
| Means of Investigation of Facts | 18 |
| Means of Interpretation of Phenomena | 20 |
| CHAP. II. | |
| GENERAL REASONINGS CONCERNING THE SUBSTANCE OF THE GLOBE. | |
| Chemical Data as to the exterior Parts of the Earth | 23 |
| Proportions per cent, of Oxygen in Earths, Minerals, and Rocks | 24 |
| Physical Data as to the interior Constitution of the Earth | 26 |
| Mass of the Globe, whence derived | 28 |
| CHAP. III. | |
| GENERAL TRUTHS CONCERNING THE STRUCTURE OF THE EXTERNAL PARTS OF THE GLOBE. | |
| Structure of the external Parts of the Globe | 33 |
| Forms of Rock Masses | 35 |
| Position of Rocks. Declination of Strata | 36 |
| Local Declinations and unusual Positions of Strata | 39 |
| Faults | 40 |
| Extent and Frequency of Faults | 42 |
| Relation of Faults, Mineral Veins, Dikes, &c. to the great Lines of disturbed Rocks | 44 |
