| Chapter I. The Harmas | 10065 |
| Chapter IV. The Mother Decides the sex of the egg | 6223 |
| Chapter XII. The Halicti: a Parasite | 6418 |
| Chapter II. The Anthrax | 6509 |
| Chapter III. Another Prober (Perforator) | 6964 |
| Chapter IV. Larval Dimorphism | 7054 |
| Chapter V. Heredity | 5884 |
| Chapter VII. The Pond | 6161 |
| Chapter VIII. The Caddis Worm | 7825 |
| Chapter IX. The Greenbottles | 6686 |
| Chapter X. The Gray Flesh Flies | 15411 |
| Chapter XI. The Bumblebee Fly | 5928 |
| Chapter XII. Mathematical Memories: Newton's Binomial Theorem | 33720 |
| Chapter XIII. Mathematical Memories: My Little Table | 5139 |
| Chapter XIV. The Bluebottle: The Laying | 6934 |
| Chapter XV. The Bluebottle: The Grub | 7390 |
| Chapter XVI. A Parasite of The Maggot | 7336 |
| Chapter XVII. Recollections of Childhood | 6635 |
| Chapter XVIII. Insects and Mushrooms | 12443 |
| Chapter XX. Industrial Chemistry | 6687 |
| Chapter VII. The Bluebottle | 9635 |
