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Author: W. T. EDMONDSON
Publisher:
ISBN: 9781527912762
Category :
Languages : en
Pages : 0
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Author: W. T. EDMONDSON
Publisher:
ISBN: 9781527912762
Category :
Languages : en
Pages : 0
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Book Description
Author: Henry Baldwin Ward
Publisher:
ISBN:
Category : Freshwater biology
Languages : en
Pages : 1130
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Book Description
Author: James George Needham
Publisher:
ISBN:
Category : Freshwater biology
Languages : en
Pages : 200
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Book Description
Author: James G. Needham
Publisher:
ISBN: 9781332775774
Category : Science
Languages : en
Pages : 200
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Book Description
Excerpt from Advance Pages From the Life of Inland Waters: An Elementary d104 Book of Fresh-Water Biology for American Students Fig. 1. Waterbloom (euglena) on the surface film Of the Renwick lagoon at Ithaca. The clear streak is the wake of a boat just passed. 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: James G. Needham
Publisher: Cornell University Press
ISBN: 150174075X
Category : Science
Languages : en
Pages : 386
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Book Description
This work is a textbook of fresh-water life dealing with its forms, its conditions, its fitnesses, its associations, and its economic aspects. The ecologic side of fresh-water biology is emphasized. Due consideration is given to the educational, economic, sanitary, social, civic, and aesthetic aspects of the subject. Limnology in America today is in its infancy. The value of its past achievements is just beginning to be appreciated. The benefits to come from a more intensive study of water life arc just beginning to be disclosed. That there is a widespread interest is already manifest in the large number of biological stations at which limnological work is being done. We recommend this volume as a general introduction to all students and teachers of this subject.
Author: Charles Atwood Kofoid
Publisher: Forgotten Books
ISBN: 9780266627418
Category :
Languages : en
Pages : 24
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Book Description
Excerpt from The Fresh-Water Biological Stations of America This supremacy of interest in marine biology is not, however, confined to the seaside laboratory; it finds its way into text books and schoolrooms. Laboratory guides in which marine types very largely predominate are not unknown, and too many a teacher of biology in collegiate courses and in the secondary schools of our inland towns depends upon marine forms for laboratory study and demonstration, to the sad neglect of the fauna with which both he and his pupils come in daily contact. From a pedagogical point of view this element of remoteness in the objects of study is unfortunate, for it tends to abridge the sympathetic contact with nature and the development on the part of the pupil of a lively interest in the world of life about him, a feature of large cultural value in all biological education. The writer has found a widespread feeling in biological circles that the fresh-water environment affords far less of value for investigation and instruction than the marine. Considered merely volumetrically, the marine fauna may well have the advantage, but all the general problems of biology can be approached with ease, and at times to even greater advantage at the fresh-water station; and, furthermore, in variety and rich ness the fauna of fresh water, in some localities at least, com pares very favorably with that at the seaside. It may then be that one of the functions of the fresh-water station is to preserve and foster an interest in fresh-water life and to empha size its availability and utility for purposes of instruction. In no sense of the word, however, are the marine and fresh-water stations to be regarded as rivals; each is the necessary comple ment of the other, and both alike have their place in the field of biology. 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: James G. Needham
Publisher: Forgotten Books
ISBN: 9781396111266
Category : Science
Languages : en
Pages : 96
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Book Description
Excerpt from A Guide to the Study of Fresh-Water Biology: With Special Reference to Aquatic Insects and Other Invertebrate Animals and Phyto-Plancton The plan and purpose of this little book in this its fourth re vision are the same as in the earlier ones: to facilitate the recog nition of freshwater organisms in the field and in the laboratory. It offers for the purpose keys and tables and figures illustrating genera. Only things commonly found in fresh waters are in cluded. Inhabitants of Salt and alkaline waters and of caves are omitted. Vertebrate animals and vascular plants are also omitted because they are better known, and because aids to their recognition are commonly available. The larger inverte brates are more fully treated than are the microscopic ones. Genera and not species are illustrated; and generic names are applied in an inclusive sense to groups of species that a beginnef may be able to recognize by external differences. T 0 provide him With a tool that he can use has been out aim, and we trust that that will explain our disregard of some of the much sub divided genera of systematic specialists. The keys have been expanded to include genera whose immature aquatic stages were formerly unknown. 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: Ann Haven Morgan
Publisher: Forgotten Books
ISBN: 9780282027001
Category : Science
Languages : en
Pages : 520
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Book Description
Excerpt from Field Book of Ponds and Streams: An Introduction to the Life of Fresh Water The mistakes that may be discovered in this book are in no way the fault of those who have read the manuscript. I can only hope that if they occur they may not be too confusing and that they may be reported and finally eliminated. 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: James George Needham
Publisher: McGraw-Hill Companies
ISBN:
Category : Aquatic insects
Languages : en
Pages : 130
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Book Description
A KEY TO IDENTIFYING FRESH-WATER ORGANISMS IN THE FIELD AND LAB.
Author: Walles Thomas Edmondson
Publisher:
ISBN:
Category : Biologia de agua dulce
Languages : en
Pages : 1248
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Book Description
