The Subterranean World

The Subterranean World is a classic work of natural history, written by German zoologist Georg Hartwig in 1871. It provides a detailed exploration of the underground ecosystems of caves, mines, and other subterranean environments, with a particular focus on the flora and fauna that inhabit them. This book is a must-read for anyone interested in the natural sciences and the hidden wonders of the earth.
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.