Excerpt from The Involuntary Nervous SystemI went to Leipsic in 1874 to Ludwig's Laboratory with the intention of working at problems connected with the sympathetic nervous system, and from that time until now my thoughts have been occupied with the meaning of this nervous system and with problems which have arisen from its study, such as the origin of the vertebrate central nervous system and thence the origin of the vertebrates themselves.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.