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Author : William Healey Dall
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.A/5 ( download)
Download or read book Deep Sea Mollusks and the Conditions Under which They Exist written by William Healey Dall and published by . This book was released on 1890 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Healey Dall
Publisher : Forgotten Books
ISBN 13 : 9780428255169
Total Pages : 30 pages
Book Rating : 4.2/5 (551 download)
Download or read book Deep Sea Mollusks and the Conditions Under Which They Exist written by William Healey Dall and published by Forgotten Books. This book was released on 2018-01-03 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Deep Sea Mollusks and the Conditions Under Which They Exist: An Address Delivered at the Ninth Anniversary Meeting of the Biological Society of Washington Similar exigencies of the environment have provoked similar mechanical responses in the Shelly parts, a result wholly in harmony with the modern postulates in biological science. As might be expected or descendents with modification there are greater similarities between the larval shells of benthal spe cies and those of their shallow water relations, than between the parts of the shell, which are of later growth in the same forms. There is one notable difference however. In the deep water forms the nucleus is frequently larger than in their shal low water analogues. It would seem as if the conditions of the depths were such, that, of a small number of large larva, more are likely to survive than of a larger number of smaller ones or at least that that form of larval growth is more useful to the species. These details will serve to show the multiplicity of facts to be accounted for and the opportunity for advancing science by a study of abyssal conditions and their effects upon the animals subjected to them. Without claiming any unique importance for the theories advanced in the foregoing remarks it may still be said that the subject is one of the very greatest interest. Perhaps experiments upon shallow water forms, artificially subjected to pressure may at some future time enable us to penetrate more deeply into the mysteries of life in the abysses. 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.
Author : Karl M. Wilbur
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.:/5 (318 download)
Download or read book The Mollusca written by Karl M. Wilbur and published by . This book was released on 1983 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Healey Dall
Publisher : Palala Press
ISBN 13 : 9781359316967
Total Pages : pages
Book Rating : 4.3/5 (169 download)
Download or read book Deep Sea Mollusks and the Conditions Under Which They Exist written by William Healey Dall and published by Palala Press. This book was released on 2016-05-24 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. 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. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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.
Author : Austin Craig Apgar
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Key to the Mollusca written by Austin Craig Apgar and published by . This book was released on 1880 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Walter Freeman Webb
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (318 download)
Download or read book United States Mollusca written by Walter Freeman Webb and published by . This book was released on 1951 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Healey Dall
Publisher : Forgotten Books
ISBN 13 : 9781333113759
Total Pages : 250 pages
Book Rating : 4.1/5 (137 download)
Download or read book Summary of the Marine Shellbearing Mollusks of the Northwest Coast of America written by William Healey Dall and published by Forgotten Books. This book was released on 2016-08-02 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Summary of the Marine Shellbearing Mollusks of the Northwest Coast of America: From San Diego, California, to the Polar Sea, Mostly Contained in the Collection of the United States National Museum, With Illustrations of Hitherto Unfigured Species Since that time a constant in ow of material from that region has enriched the collection of the United States National Museum until it has become unrivaled in this group of animals. Very few of the species described from the area between the southern boundary of the United States and the Polar Sea on the Pacific coast are absent from the series referred to. In a few cases where the writer has not been able to verify personally the names or the distribution from authentic specimens, the name of the authority upon whom the data rest has been added in parentheses. The distribution of the Mollusca on the west coast of America may be allotted to three grand divisions: the Arctic or Boreal, the Tem perate, and the Tropical faunas. The first, containing many Circumboreal species, extends from the Arctic or Polar Sea to the southern limit of drift ice in winter in Bering Sea. The Temperate division extends from this line southward on the west coast of America to Point Conception, California. The Tropic division extends from this point southward to Point Aguja on the coast of Peru. 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."
