| Chapter I. The Harmas | 10088 |
| Chapter II. The Anthrax | 6527 |
| Chapter III. Another Prober (Perforator) | 6977 |
| Chapter IV. Larval Dimorphism | 7067 |
| Chapter V. Heredity | 5892 |
| Chapter VII. The Pond | 6169 |
| Chapter VIII. The Caddis Worm | 7833 |
| Chapter IX. The Greenbottles | 6695 |
| Chapter X. The Gray Flesh Flies | 15432 |
| Chapter XI. The Bumblebee Fly | 5938 |
| Chapter XII. Mathematical Memories: Newton's Binomial Theorem | 33792 |
| Chapter XIII. Mathematical Memories: My Little Table | 5146 |
| Chapter XIV. The Bluebottle: The Laying | 6946 |
| Chapter XV. The Bluebottle: The Grub | 7397 |
| Chapter XVI. A Parasite of The Maggot | 7348 |
| Chapter XVII. Recollections of Childhood | 6645 |
| Chapter XVIII. Insects and Mushrooms | 12456 |
| Chapter XX. Industrial Chemistry | 6697 |
