Excerpt from Progress, Its Law and Cause: With Other Disquisitions, Viz., The Physiology of Laughter, Origin and Function of Music, the Social Organism, Use and Beauty, the Use of Anthropomorphism Every child has made the attempt to hold the foot still while it is tickled. And has failed; and probably there is scarcely any one who has not vainly tried to avoid wink ing when a hand has been suddenly passed before the eyes. These examples of museu lar movements which occur independently of the will. Or in spite of it, illustrate what physiologists call reflex action; as likewise do sneezing and coughing. To this class of cases, in which involuntary motions are ao companied by sensations, has to be added another class of cases, in which involuntary motions are unaccompanied by sensations: instance the pulsations of the heart; the contractions of the stomach during digestion. Further, the great mass of seemingly volun tary acts in such creatures as insects, worms, For numerous illustrations see essay on The Origin and Function of Music. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.