Darwin's detailed analysis of what actually happens to a body in a state of fear, or joy, or anger.
Ekman (psychology, UC San Francisco) presents a work that was well known during Darwin's lifetime, providing notes throughout, as well as an introduction, afterword, and appendices. Darwin's text itself goes into great detail describing facial and bodily expressions corresponding to dozens of emotions in humans, dogs, horses, apes, and other animals. Photographs, drawings and woodcuts illustrate the expressions described. Annotation c. by Book News, Inc., Portland, Or.