A Treatise on Zoology is a classic reference work on the subject of animal life, encompassing everything from protozoa to man. Originally published in 1900, this multi-volume set provides a comprehensive overview of the field, with contributions from some of the leading zoologists of the day. With its in-depth analysis of the morphology, anatomy, and physiology of animals, this book remains an essential resource for students and researchers in biology and related fields. 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.