Author: Francis Maitland Balfour
Publisher:
ISBN:
Category : Chondrichthyes
Languages : en
Pages : 426

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Author: Balfour
Publisher:
ISBN:
Category :
Languages : en
Pages : 434

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Author: Francis Maitland Balfour
Publisher:
ISBN:
Category : Chondrichthyes
Languages : en
Pages : 464

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Author: Robert E. Shadwick
Publisher: Academic Press
ISBN: 0128014377
Category : Science
Languages : en
Pages : 581

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Book Description
Fish Physiology: Physiology of Elasmobranch Fishes, Volume 34B is a useful reference for fish physiologists, biologists, ecologists, and conservation biologists. Following an increase in research on elasmobranchs due to the plight of sharks in today's oceans, this volume compares elasmobranchs to other groups of fish, highlights areas of interest for future research, and offers perspective on future problems. Covering measurements and lab-and-field based studies of large pelagic sharks, this volume is a natural addition to the renowned Fish Physiology series. - Provides needed comprehensive content on the physiology of elasmobranchs - Offers a systems approach between structure and interaction with the environment and internal physiology - Contains contributions by leading experts in their respective fields, under the guidance of internationally recognized and highly respected editors - Highlights areas of interest for future research, including perspective on future problems

Author: John Franklin Daniel
Publisher:
ISBN:
Category : Chondrichthyes
Languages : en
Pages : 388

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Author: Francis Maitland Balfour
Publisher: Theclassics.Us
ISBN: 9781230305929
Category :
Languages : en
Pages : 120

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1878 edition. Excerpt: ... chapter xii. The Organs Of Excretion. The earliest stages in the development of the excretory system have already been described in a previous chapter' of this memoir, and up to the present time no investigator, with tbe exception of Dr Alex. Schultz," has gone over the same ground. Dr Schultz' descriptions are somewhat brief, but differ from my own mainly in stating that the segmental duct arises from an involution instead of as a solid knob. This discrepancy is, I believe, due to Dr Schultz drawing his conclusions as to the development of the segmental duct from its appearance at a comparatively late stage. He appears to have been unacquainted with my earlier descriptions. The adult anatomy and later stages in the development of the excretory organs form the subject of the present chapter, and stand in marked contrast to the earlier stages in that they have been dealt with in a magnificent monograph3 by Professor Semper, whose investigations have converted this previously almost unknown field of vertebrate embryology into one of the most fully explored parts of the whole subject. Reference is frequently made to this monograph in the succeeding pages, but my references, numerous as they are, give no adequate idea of the completeness and thoroughness of Professor Semper's investigations. In Professor Semper's monograph are embodied the results of a considerable number of preliminary papers published by him in his Arbeiten and in the Centralblatt. The excretory organs of Elasmobranchs have also formed the subject of some investigations by Dr Meyer1 and by myself. Their older literature is fully given by Professor Semper. In addition to the above-cited works, there is one other paper by Dr Spengel" on the Urinogenital System of Amphibians, ...

Author: Francis M. Balfour
Publisher:
ISBN: 9781330529133
Category : Science
Languages : en
Pages : 398

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Excerpt from A Monograph on the Development of Elasmobranch Fishes The present Monograph is a reprint of a series of papers published in the Journal of Anatomy and Physiology during the years 1876, 1877 and 1878. The successive parts were struck off as they appeared, so that the earlier pages of the work were in print fully two years ago. I trust the reader will find in this fact a sufficient excuse for a certain want of coherence, which is I fear observable, as well as for the omission of references to several recent publications. The first and second chapters would not have appeared in their present form had I been acquainted, at the time of writing them, with the researches which have since been published, on the behaviour of the germinal vesicle and on the division of nuclei. I may also call attention to the valuable papers of Prof. His on the formation of the layers in Elasmobranchs, and of Prof. Kowalevsky on the development of Amphioxus, to both of which I would certainly have referred, had it been possible for me to do so. 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: Francis Maitland Balfour
Publisher: Franklin Classics
ISBN: 9780342053889
Category :
Languages : en
Pages : 408

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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 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. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author: William C. Hamlett
Publisher: JHU Press
ISBN: 9780801860485
Category : Nature
Languages : en
Pages : 542

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Book Description
Successor to the classic work in shark studies, The Elasmobranch Fishes by John Franklin Daniel (first published 1922, revised 1928 and 1934), Sharks, Skates, and Rays provides a comprehensive and up-to-date overview of elasmobranch morphology. Coverage has been expanded from anatomy to include modern information on physiology and biochemistry. The new volume also provides equal treatment for skates and rays. The authors present general introductory material for the relative novice but also review the latest technical citations, making the book a valuable primary reference resource. More than 200 illustrations supplement the text.

Author: Robert E. Shadwick
Publisher: Academic Press
ISBN: 0128014431
Category : Technology & Engineering
Languages : en
Pages : 423

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Book Description
Fish Physiology: Physiology of Elasmobranch Fishes, Volume 34A is a useful reference for fish physiologists, biologists, ecologists, and conservation biologists. Following an increase in research on elasmobranchs due to the plight of sharks in today's oceans, this volume compares elasmobranchs to other groups of fish, highlights areas of interest for future research, and offers perspective on future problems. Covering measurements and lab-and-field based studies of large pelagic sharks, this volume is a natural addition to the renowned Fish Physiology series. - Provides needed comprehensive content on the physiology of elasmobranchs - Offers a systems approach between structure and interaction with the environment and internal physiology - Contains contributions by leading experts in their respective fields, under the guidance of internationally recognized and highly respected editors - Highlights areas of interest for future research, including perspective on future problems