This book provides a detailed account of the work done by the Office of Seed and Plant Introduction of the Department of Agriculture in introducing plants from foreign countries into the United States. It also outlines some of the challenges faced during this process and the ways in which the department is working to solve them. A must-read for anyone interested in the history of botany and agriculture in America. 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.