A Manual of American Land Shells (Classic Reprint)

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Excerpt from A Manual of American Land ShellsThe following pages form an enlarged and revised edition of The Land and Freshwater Shells of North America, Part I, published by the Smithsonian Institution in 1869. Subsequently-described species are added. Fuller attention is given in separate chapters to the sub jects of geographical distribution, organs of generation, jaw and lingual dentition, and classification. In the descriptive portion of the work the species are grouped geographically rather than systematically, an ar rangement which at first seems awkward to our confirmed habits, but which, on consideration, is justified by the fact that the political di visions of the continent do not agree with the limits of all the various pulmonate faunas.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.