Monograph Of The Naiades Of Pennsylvania PDF Download

Excerpt from A Monograph of the Naiades of Pennsylvania, Vol. 3: Systematic Account of the Genera and Species With regard to the systematic literature, I have refrained from giving a full list of references and synonyms under each species, since the citations given by Simpson (1914) are as complete as could be desired. The quotation of the earlier reports from Pennsylvania was deemed desirable, in order to get an idea of the advance made in recent years in our knowledge of the subject. 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.