| Chapter VI. Instinct And Discernment | 7324 |
| Chapter VII. Economy of Energy | 5246 |
| Chapter II. The Pine Processsionary: The Nest; The Community | 10602 |
| Chapter III. The Pine Processionary: The Procession | 10100 |
| Chapter IV. The Pine Processionary: Meteoroogy | 6197 |
| Chapter VIII. The Pine Processionary | 4834 |
| Chapter XIV. The Cabbage Caterpillar | 9209 |
