Psychology, Comparative

Ants and Some Other Insects

An Inquiry Into the Psychic Powers of These Animals

Auguste Forel

Mental Evolution in Man

Origin of Human Faculty

George John Romanes

The Dawn of Reason; or, Mental Traits in the Lower Animals

James Jr. Weir

Animal Life and Intelligence

C. Lloyd (Conwy Lloyd) Morgan

Clever Hans (The Horse of Mr. Von Osten)

A contribution to experimental animal and human psychology

Oskar Pfungst

The Expression of the Emotions in Man and Animals

Charles Darwin