In this groundbreaking work, John Grove explores the origins and spread of disease, and provides new insights into the role of living germs in the transmission of illness. Drawing on a wide range of scientific research and anecdotal evidence, Grove makes a compelling case for the importance of taking a more holistic approach to disease prevention and treatment. The book is a must-read for anyone interested in the history and science of medicine. 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.