The Thayer Expedition is a fascinating chronicle of one of the most ambitious scientific expeditions of the 19th century. Led by the legendary naturalist Louis Agassiz and his collaborator Charles Frederick Hartt, the Thayer Expedition explored the geology and biology of the Amazon River basin like never before. This book offers a rare glimpse into the scientific process and the excitement of discovery, and is a must-read for anyone interested in the history of science. 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.