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Excerpt from Space and Geometry in the Light of Physiological, Psychological and Physical Inquiry Likewise the skin, which is a closed surface of complicated geometrical form, is an agency of spa tial perception. Not only do we distinguish the quality of the irritation, but by some sort of a supplementary sensation we also distinguish its locality. Now this supplementary sensation need only differ from place to place (the difference in. 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.