| Chapter I. The Harmas | 7071 |
| Chapter II. The Anthrax | 4741 |
| Chapter III. Another Prober (Perforator) | 5138 |
| Chapter IV. Larval Dimorphism | 5264 |
| Chapter V. Heredity | 4070 |
| Chapter VII. The Pond | 4402 |
| Chapter VIII. The Caddis Worm | 6028 |
| Chapter IX. The Greenbottles | 4927 |
| Chapter X. The Gray Flesh Flies | 13160 |
| Chapter XI. The Bumblebee Fly | 4222 |
| Chapter XII. Mathematical Memories: Newton's Binomial Theorem | 14222 |
| Chapter XIII. Mathematical Memories: My Little Table | 3458 |
| Chapter XIV. The Bluebottle: The Laying | 5371 |
| Chapter XV. The Bluebottle: The Grub | 5534 |
| Chapter XVI. A Parasite of The Maggot | 5575 |
| Chapter XVII. Recollections of Childhood | 4895 |
| Chapter XVIII. Insects and Mushrooms | 10099 |
| Chapter XX. Industrial Chemistry | 4939 |
