This book contains a collection of research and medical reports related to the study of the ear and hearing. It covers a wide range of topics such as otitis media, hearing loss, and the anatomy of the ear. The reports are written in technical language and are intended for medical professionals and researchers in the field of otology. 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.