| Chapter I. The Harmas | 9787 |
| Chapter II. The Anthrax | 6332 |
| Chapter III. Another Prober (Perforator) | 6809 |
| Chapter IV. Larval Dimorphism | 6890 |
| Chapter V. Heredity | 5734 |
| Chapter VII. The Pond | 6012 |
| Chapter VIII. The Caddis Worm | 7665 |
| Chapter IX. The Greenbottles | 6542 |
| Chapter X. The Gray Flesh Flies | 15240 |
| Chapter XI. The Bumblebee Fly | 5735 |
| Chapter XII. Mathematical Memories: Newton's Binomial Theorem | 33188 |
| Chapter XIII. Mathematical Memories: My Little Table | 4979 |
| Chapter XIV. The Bluebottle: The Laying | 6804 |
| Chapter XV. The Bluebottle: The Grub | 7242 |
| Chapter XVI. A Parasite of The Maggot | 7153 |
| Chapter XVII. Recollections of Childhood | 6473 |
| Chapter XVIII. Insects and Mushrooms | 12240 |
| Chapter XX. Industrial Chemistry | 6530 |
