Contributions From the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, Vol. 13 (Classic Reprint)

Book excerpt: Excerpt from Contributions From the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, Vol. 13 This institution reserves the right to refuse to accept a copy order if, in its judgement, fulfillment of the order would involve violation of the copyright law. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.