| Chapter IV. The Mother Decides the sex of the egg | 5218 |
| Chapter V. Permutations of Sex | 5448 |
| Chapter I. The Terebinth Aphids. | 6074 |
| Chapter II. Experiments | 5725 |
| Chapter III. Exchanging The Nests | 4306 |
| Chapter IV. More Enquiries Into Mason Bees | 7620 |
| Chapter V. The Story of My Cats | 5809 |
| Chapter X. The Tribulations of The Mason Bee | 6954 |
| Making a Bug Home | 13281 |
