This classic work is a landmark in the study of butterfly biology and evolution. Drawing on his extensive fieldwork and research, the author provides a detailed account of the life history, anatomy, and ecology of American butterflies, and shows how the study of these insects can shed light on the principles of evolution. With its beautiful illustrations and rigorous scientific analysis, this book is an essential reference for anyone interested in the natural history of butterflies. 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.