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Manual of Conchology; Structural and Systematic, Vol. 1: With Illustrations of the Species (Classic Reprint) - Tapa blanda
Sinopsis
Excerpt from Manual of Conchology; Structural and Systematic, Vol. 1: With Illustrations of the Species
Behind the arms the circle of which may constitute its crown, that major portion of the head is situated which is usually dis tinctively so designated its dorsal aspect exhibits on either side an eye. The head may be joined to the body by a more or less constricted neck, or is frequently sessile upon the latter, without intervening constriction. The body, or mantle, is dorsally more or less continuous with the head, but ventrally forms a sack anteriorly open, and from which emerges the funnel or siphon (which may also be regarded as a modification of a portion of the foot of the gasteropoda). The sack or body is, in a small portion of the octopod and in the decapod species, expanded into postero lateral membranes, possessing the power of undulatory motion, and which may be considered as the equivalent of fins, in func tion, though not in appearance.
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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.
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Reseña del editor
Excerpt from Manual of Conchology; Structural and Systematic, Vol. 1: With Illustrations of the Species
J' The nervous system and phylogeny of the cephalopoda have been studied by Hermann von J hering (leipzig, who states as a result of his researches upon the homologies of the ganglias and nerves, that the arms of the cephalopods in no way represent the foot of the gasteropoda, but are tentacular growths of the head that the only part of the cephalo pod analogous to the foot of the gasteropod, is the siphon.
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.
Reseña del editor
Excerpt from Manual of Conchology; Structural and Systematic, Vol. 1: With Illustrations of the Species
I propose to compile a Conchological Manual, which, whilst more comprehensive than any similar work hitherto published, shall be so condensed in text and illustration that it may be issued at a much more moderate price. It will include, in systematic order, the diagnoses of all the genera and higher divisions of the mollusca, both recent and fossil, and the descriptions and figures of all the recent species; together with the main features of their anatomy and physiology, their embryology and development, their relations to man and other animals, and their geological and geographical distribution.
The material at my disposal for the purpose of working up this comprehensive plan is ample and unexcelled:
I. - The Library of the Academy of Natural Sciences of Philadelphia contains almost every separate work ever published upon the subject, together with the various volumes of voyages and travels, of general natural history, and especially scientific periodicals, and the published transactions of learned societies throughout the world. For Conchological purposes this library is almost complete, and it is very rarely that its shelves do not afford any reference desired.
II. - The Conchological Museum of the same institution ranks among the largest in the world in the number of species represented, whilst in the richness of its geographical suites, the number of specimens illustrating varietal forms, etc., it is probably the finest collection extant.
It is intended to arrange and describe the valid species in accordance with their inter-relationships, and it is hoped that by so doing their number may be greatly reduced. Every genus and every recent species will be fully illustrated, so far as specimens or hitherto published figures will enable me to do so. The experienced skill of Dr. E. J. Nolan, who has undertaken to furnish the illustrations (of which 30,000 to 40,000 will be required), will sufficiently guarantee the accuracy of this department of the Manual.
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.
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Manual of Conchology Structural and Systematic, Vol 1 With Illustrations of the Species Classic Reprint
Librería: PBShop.store US, Wood Dale, IL, Estados Unidos de America
Calificación del vendedor: 5 de 5 estrellas
PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781331945833
Cantidad disponible: 15 disponibles
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Manual of Conchology Structural and Systematic, Vol 1 With Illustrations of the Species Classic Reprint
Librería: PBShop.store UK, Fairford, GLOS, Reino Unido
Calificación del vendedor: 5 de 5 estrellas
PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000. Nº de ref. del artículo: LW-9781331945833
Cantidad disponible: 15 disponibles
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Manual of Conchology; Structural and Systematic, Vol. 1 (Classic Reprint)
Impresión bajo demandaLibrería: Forgotten Books, London, Reino Unido
Calificación del vendedor: 5 de 5 estrellas
Paperback. Condición: New. Print on Demand. This book delves into the characteristics and behaviours of cephalopods, a fascinating group of marine animals including the octopus, squid, and cuttlefish. The author, a renowned expert in this field, explores their physical adaptations, sensory perception, and ecology. The book traces the evolutionary history of cephalopods, providing insights into their ancient origins and the diversity of species found today. By examining their complex nervous systems and advanced problem-solving abilities, the author highlights the intelligence and adaptability of these creatures. Through captivating descriptions and detailed illustrations, the book unveils the hidden world of cephalopods, revealing their remarkable strategies for survival and their significance within the broader marine ecosystem. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Nº de ref. del artículo: 9781331945833_0
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