| Chapter VI. Instinct And Discernment | 8027 |
| Chapter VII. Economy of Energy | 5875 |
| Chapter II. The Pine Processsionary: The Nest; The Community | 11440 |
| Chapter III. The Pine Processionary: The Procession | 12214 |
| Chapter IV. The Pine Processionary: Meteoroogy | 7008 |
| Chapter VIII. The Pine Processionary | 5530 |
| Chapter XIV. The Cabbage Caterpillar | 9866 |
