| Chapter VI. Instinct And Discernment | 9507 |
| Chapter VII. Economy of Energy | 7197 |
| Chapter II. The Pine Processsionary: The Nest; The Community | 14050 |
| Chapter III. The Pine Processionary: The Procession | 16219 |
| Chapter IV. The Pine Processionary: Meteoroogy | 8888 |
| Chapter VIII. The Pine Processionary | 6823 |
| Chapter XIV. The Cabbage Caterpillar | 11149 |
