| CHAPTER | PAGE | |
|---|---|---|
| I. | A Short History of the Investigations | 1 |
| II. | The Physical Conditions of the Abyss | 17 |
| III. | The Relations of the Abysmal Zone and the Origin of its Fauna | 45 |
| IV. | The Characters of the Deep-sea Fauna | 59 |
| V. | The Protozoa, Cœlentera, and Echinoderma Of the Deep Sea | 86 |
| VI. | The Vermes and Mollusca of the Deep Sea | 109 |
| VII. | The Arthropoda of the Deep Sea | 123 |
| VIII. | The Fish of the Deep Sea | 148 |
| Index | 167 | |