| Chapter VI. Instinct And Discernment | 9074 |
| Chapter VII. Economy of Energy | 6828 |
| Chapter II. The Pine Processsionary: The Nest; The Community | 13156 |
| Chapter III. The Pine Processionary: The Procession | 14929 |
| Chapter IV. The Pine Processionary: Meteoroogy | 8302 |
| Chapter VIII. The Pine Processionary | 6479 |
| Chapter XIV. The Cabbage Caterpillar | 10800 |
