First published in 1906, this pioneering work on dental anesthesia remains a vital resource for dentists and oral surgeons. Author J Richard Quinton details the use of congelation (freezing) as a method for painlessly extracting teeth, and provides detailed instructions for its use. With a focus on patient safety and comfort, this book is a must-read for anyone interested in the history of dentistry or modern dental anesthesia techniques. 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.