Excerpt from Psychological Medicine: A Manual on Mental Diseases for Practitioners and StudentsAs sleeplessness is both a frequent cause of, and an important symptom in, most forms of mental disorder, a chapter has been reserved for its consideration.The subject-matter throughout the book has been broken up into sections for the benefit of those who wish to refer to special matters only.This book is designedly simple in both arrangement and language, and is, to a great extent, a summary of many years' asylum experience digested for the student. If it in any way helps the student to a better understanding of insanity.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.