| Chapter VI. Instinct And Discernment | 952 |
| Chapter VII. Economy of Energy | 846 |
| Chapter IX. The Cotton-Bees | 825 |
| Chapter X. The Resin-Bees | 575 |
| Chapter XI. The Poison of The Bee | 1626 |
| Chapter XIII. The Halicti: the Portress | 560 |
| Chapter II. Experiments | 886 |
| Chapter V. The Story of My Cats | 927 |
| Chapter VI. The Red Ants | 778 |
| Chapter VII. Some Reflections Upon Insect Psychology | 1006 |
| Chapter II. The Pine Processsionary: The Nest; The Community | 632 |
| Chapter III. The Pine Processionary: The Procession | 738 |
| Chapter IV. The Pine Processionary: Meteoroogy | 1196 |
| Chapter VI. The Narbonne Lycosa: the Climbing-Instinct | 1233 |
| Chapter VII. The Spiders' Exodus | 752 |
| Chapter I. The Harmas | 776 |
| Chapter II. The Green Grasshopper | 2200 |
| Chapter III. The Empusa | 772 |
| Chapter IV. The Capricorne | 1080 |
| Chapter V. The Burying Beetle: The Burying | 2450 |
| Chapter VI. The Burying Beetles: Experiments | 625 |
| Chapter VII. The Bluebottle | 1659 |
| Chapter VIII. The Pine Processionary | 589 |
| Chapter IX. The Spiders. The Narbonne Lycosa, or Black-Bellied Tarantula. The Burrow. | 542 |
| Chapter X. The banded Epeira. Building the Web. | 558 |
| Chapter XI. The Eumenes | 807 |
| Chapter XII. The Osmiae. Their Habits | 527 |
| Chapter XIII. The Glow-Worm | 1773 |
| Chapter XIV. The Cabbage Caterpillar | 854 |
| Making a Bug Home | 1223 |