The Expression of the Emotions in Man and Animals Chapter VI - Special Expressions of Man - Suffering and Weeping Part 1

In which the natural expressions of suffering and weeping in man, particularly in infants, are carefully examined with attention to the muscular contractions and changes about the eyes and mouth that accompany crying, as well as the gradual development of tears and sobbing. The physiological necessity of the firm closure of the eyelids during violent expirations, such as screaming, is explored with the aid of anatomical observations and scientific inquiry, demonstrating its protective function for the delicate eye.