Fish: In Relation to Their Surroundings (Classic Reprint) - Softcover

G. B. Howes

Softcover

ISBN 10: 1330170822 ISBN 13: 9781330170823

Publisher: Forgotten Books, 2018

Synopsis

Excerpt from Fish: In Relation to Their Surroundings

The special interest of this case lies In the fact that during that single night this fish was absolutely exterminated, so far, at any rate, as the area alluded to is concerned, for the reports that have been published during succeeding years have shown that the fish has not been since met with in its old habitats. Our American friends naturally thought that this summary extinction was due to volcanic action 5 but if this were so, it is only natural that other fish, known to be living in the same water, should have 'been destroyed. In the absence Of all but here and there a stray carcase of any other fish, they have come to the conclusion that the destruction was due to a change (and most probably a reduction) in the temperature Of the water, brought about mainly by a churning action and by the fact that they had just passed through an excessively hard winter. Which had left a quantity of ice as its legacy. The possibility that this is a sound conclusion is the greater from the study of more familiar facts concerning the common Cod. When captured these fish are frequently placed in wells in the bottom of the boats, which are exposed to the isea beneath, and it has been found that under these circumstances they may become numbed on being brought into contact with cold water. We thus see that a fish may, be so sensitive to immediate change in its environment, that in a single night a species destined to become one of the most important food fishes of the world may be destroyed. An interesting fact bearing on this question is reported from Tasmania. For many years efforts have been made to acclimatize the English Salmonidae to' Tasmanian waters.' With the Trout there has been success; but although some thousands of pounds have been spent in the endeavour to acclimatise the Salmon, it has been found that when the young Salmon have been reared to the migratory stage, they \disappear. The temperature of the sea into which the River Plenty flows, is found to be 10 degrees higher than that around Great Britain 5 hence it is argued that the young Smolt have been.

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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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Product Description

Excerpt from Fish: In Relation to Their Surroundings Professor Howes said: I imagine that to most of us the word fish suggests a scale-clad creature, to be more or less admired while in the water, to be despatched on removal from it, -withal a none too fortunate animal. Of these scaly fishes there are some eight thousand odd species today inhabiting the globe, and bountiful nature provides them as food for the body and as food for the mind. It is in the latter association that I wish to speak of them to-day, and the gist of a great deal that I have to put before you depends upon what we are to understand by a fish j upon the proof that the fish may be sensitive to immediate change in its environment, and that it may be specially modified in accordance with the conditions of its existence. What, in the first place, are we to understand by a fish. It has long been customary to distinguish so-called water-breathing from air-breathing animals, and while we refer fish to the water-breathing series, we refer creatures which like ourselves live on land to the air-breathing one. When we look a little more closely into the facts however, we find, within the limits of a reservation which I shall put before you, that if free oxygen be withdrawn from the water, life is impossible to the fish; and this is but one way of proving that although the fish lives in water it is dependent upon oxygen for the maintenance of its life. 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 imperfe

Edition details

• Publisher: Forgotten Books
• Publication date: 2018
• Language: English
• ISBN 10: 1330170822
• ISBN 13: 9781330170823
• Binding: Paperback
• Number of pages: 275