| CHAPTER | PAGE | |
| I. | Inhabitants of a Drop of Water | 7 |
| II. | The Sponges | 18 |
| III. | The Jellyfishes | 26 |
| IV. | The Sea Anemones | 38 |
| V. | The Corals | 44 |
| VI. | The Stone Lilies | 56 |
| VII. | The Stars of the Sea | 60 |
| VIII. | Ocean Hedgehogs | 65 |
| IX. | The Sea Cucumbers | 70 |
| X. | The Worms | 73 |
| XI. | The Two-valved Shells | 89 |
| XII. | The Univalves | 103 |
| XIII. | The Cuttlefishes | 117 |
| XIV. | The Crustaceans | 128 |
| XV. | From Barnacles to Lobsters | 134 |
| XVI. | The Crabs | 145 |
| XVII. | Luminous Crabs | 156 |
| XVIII. | The Insects | 159 |
| XIX. | Lower Forms of Insects | 164 |
| XX. | The Spiders | 168 |
| XXI. | Some Six-legged Insects | 178 |
| XXII. | Some Mimics | 186 |
| XXIII. | The Grasshoppers and Locusts | 190 |
| XXIV. | The Beetles | 195 |
| XXV. | The Bugs | 199 |
| XXVI. | Flies and Mosquitoes | 204 |
| XXVII. | The Butterflies and Moths | 212 |
| XXVIII. | The Ants | 222 |
| XXIX. | The Bees and Wasps | 228 |
| Index | 233 |
HALF HOURS WITH
THE LOWER ANIMALS
PROTOZOANS, SPONGES, CORALS, SHELLS, INSECTS, AND CRUSTACEANS