| Chapter VI. Instinct And Discernment | 7601 |
| Chapter VII. Economy of Energy | 5500 |
| Chapter II. The Pine Processsionary: The Nest; The Community | 10984 |
| Chapter III. The Pine Processionary: The Procession | 11080 |
| Chapter IV. The Pine Processionary: Meteoroogy | 6492 |
| Chapter VIII. The Pine Processionary | 5155 |
| Chapter XIV. The Cabbage Caterpillar | 9521 |
