| Chapter VI. Instinct And Discernment | 7462 |
| Chapter VII. Economy of Energy | 5365 |
| Chapter II. The Pine Processsionary: The Nest; The Community | 10763 |
| Chapter III. The Pine Processionary: The Procession | 10534 |
| Chapter IV. The Pine Processionary: Meteoroogy | 6346 |
| Chapter VIII. The Pine Processionary | 4969 |
| Chapter XIV. The Cabbage Caterpillar | 9342 |
