Excerpt from The Croonian Lectures on the Chemical Side of Nervous Activity, Delivered Before the Royal College of Physicians of London, in June, 1901 The lectures as now printed are somewhat fuller than those actually delivered. Analytical tables are for instance given, and details of experiments are described, which were only referred to in general terms in the spoken lectures. This little book aims at presenting in a systematic way the numerous researches relating to the nervous system which for several years past have been carried out in the Physiological Laboratory of King's College, London. Much of what appears has been published elsewhere, mainly in the Journal of Physiology, and in the Philosophical Transactions of the Royal Society, but I have never before had the opportunity of presenting the whole in a connected form. The fourth lecture is in the main identical with a paper recently presented by Dr. Mott and myself to the Royal Society. I have to thank the Council of the Royal Society, the Editors of the Journal of Physiology, and of the British Medical Journal, Dr. Mott, and Mr. John Murray, for permission to reproduce some of the illustrations here given. I have also to thank the Royal College of Physicians for allowing the funds of the Croonian Trust to be devoted to the expenses of many of the researches here described. 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.