This valuable resource provides a thorough overview of insomnia and other commonly encountered sleep disorders. Written by Henry Munson Lyman, a renowned physician and expert in the field of sleep medicine, the book covers the causes, diagnosis, and treatment of a range of sleep-related problems. It is an essential reference for anyone involved in the diagnosis or treatment of sleep disorders. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.