AN INQUIRY INTO THEIR CONNECTION AND MUTUAL MENTAL DISORDERS: AN ENLARGED AND REVISED EDITION. TO WHICH ARE ADDED PSYCHOLOGICAL ESSAYS. BY HENRY MAUDSLEY, M. D., FELLOW OF THE ROYAL COLLEGE OF PHYSICIANS; PROFESSOR OF MEDICAL AUTHOR OF "RESPONSIBILITY IN MENTAL DISEASES;" "PHYSIOLOGY AND NEW YORK: D. APPLETON AND COMPANY, 1, 8, AND 5 BOND STREET. 1890. 1602 144 1890 PREFACE TO THE SECOND EDITION. THE first three Lectures, on Body and Mind, and the last two Essays, in this volume, appeared in the first edition. The Lecture or Address on Conscience and Organization, and the Essays on Hamlet and Swedenborg, are additions. Nearly half the book, therefore, consists of matter which was not contained in the first edition. Under these circumstances, a slight addition has been made to the title-page, in order to indicate, so far as possible, the character of the new matter which has been added. June 1, 1873. PREFACE TO THE FIRST EDITION. THE three lectures forming the first part of this volume were delivered before the Royal College of Physicians of London, to which I had the honor of being appointed Gulstonian Lecturer for this year; the latter part consists of two articles which, having appeared elsewhere, are reprinted here as presenting a completer view of some points that are only touched upon in the lectures; and the general plan of the whole, as thus constituted, may be described as being to bring man, both in his physical and mental relations, as much as possible within the scope of scientific inquiry. The first lecture is devoted to a general survey of the Physiology of Mind-to an exposition of the physical conditions of mental function in health. In the second lecture are sketched the features of some forms of degeneracy of mind, as exhibited in morbid varieties of the human kind, with the purpose of bringing prominently into notice the operation of physical |