Thompson, D’Arcy W., A Glossary of Greek Birds, 1895. Aristotle as a Biologist, 1913. Also the notes to his translation of the Historia animalium.

Westermarck, E., The Origin and Development of Moral Ideas, I (1906) 251-60, gives further bibliography on the subjects of animals as witnesses and the punishment of animal culprits.

[262] VIII, 1-12.

[263] VIII, 17-21.

[264] XXXII, 5.

[265] VIII, 37.

[266] VIII, 11-12.

[267] XXVII, 2; XVIII, 1.

[268] XXVII, 2; VIII, 41.

[269] XX, 51 and 61; XXII, 37 and 45.