This classic text on parasitic diseases and their impact on human health is an essential resource for medical students and professionals. The authors provide detailed descriptions of common parasites, their life cycles, and the illnesses they cause, along with information on prevention and treatment. Originally published in German in 1863, this English translation from 1886 remains a seminal work in the field of medical parasitology. 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.