Book 1
Instinct and Intelligence in Birds
Francis H. Herrick
Book 2
The Hive Mind. Social Insects and Their Secrets
Various Authors
Book 3
Instinct in Insects
George Pouchet
Book 4
The Intelligence of Ants
George Romanes
Book 5
Hypnotism in Animals
Joseph Czermak
Book 6
The Natural History of the Oyster
Samuel Lockwood