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Author: Edward Alexander Preble
Publisher: Forgotten Books
ISBN: 9780266411437
Category : Science
Languages : en
Pages : 630
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Book Description
Excerpt from A Biological Investigation of the Athabaska-Mackenzie Region Leaving Fort Smith on June 29, we descended Slave River to Great Slave Lake, collecting a little on the way, and reached Fort Resolution on July 4. Here we worked in company until July 9, when I left my brother to examine the place more thoroughly, and crossed to Fort Rae, making collections on the way, and arriving July 18. The next ten days I spent in the vicinity of Fort Rae, securing a good representative series of the small mammals and many inter esting birds. 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: Edward Alexander Preble
Publisher: Forgotten Books
ISBN: 9780266411437
Category : Science
Languages : en
Pages : 630
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Book Description
Excerpt from A Biological Investigation of the Athabaska-Mackenzie Region Leaving Fort Smith on June 29, we descended Slave River to Great Slave Lake, collecting a little on the way, and reached Fort Resolution on July 4. Here we worked in company until July 9, when I left my brother to examine the place more thoroughly, and crossed to Fort Rae, making collections on the way, and arriving July 18. The next ten days I spent in the vicinity of Fort Rae, securing a good representative series of the small mammals and many inter esting birds. 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: Edward Alexander Preble
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 574
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Author: Edward Alexander Preble
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 594
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Author: Edward Alexander Preble
Publisher: Palala Press
ISBN: 9781342837783
Category :
Languages : en
Pages : 634
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Book Description
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:
Publisher:
ISBN:
Category : Fishing
Languages : en
Pages : 468
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Author: J. E. Reighard
Publisher:
ISBN: 9781331967941
Category : Science
Languages : en
Pages : 74
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Book Description
Excerpt from A Biological Examination of Lake St. Clair The remedy does not lie in restrictive legislation; it lies rather in an increasing of the effectiveness of methods of artificial propagation and perhaps also in an increase of the annual output of artificially hatched fish. "The first view is held for the most part by fish culturists, who favor restrictive legislation and increased facilities for artificial propagation. "The second view is held for the most part by fishermen, many of whom are not yet convinced of the value of artificial propagation. "When one who is neither fish culturist nor fisherman attempts to discover the grounds upon which the various opinions are based, he very soon finds that there are but few recorded facts. "In order to know whether the number of whitefish is increasing or diminishing for any locality or for all localities, it is necessary to have statistics extending over a term of years. Statements based on statistics which are taken in two years separated by an interval of five or ten years are nearly valueless for purposes of comparison for the reason that such statistics do not and cannot take into account the climatic conditions which make one year favorable and another year unfavorable. The fact that in the year 1880 the number of whitefish marketed was greater than in 1890 does not prove that the number of whitefish has diminished in this interval; it proves only that the number caught in 1890 was less than the number caught in 1880. This may have been due to a diminution in the number of fish, but it may also have been due to storms during the fishing season of 1890. Statistics to be conclusive should enable us to compare the average yield for the ten years 1870 to 1880 with the average yield for the ten years 1880 to 1890. "No such continuous series of statistics is in existence, so that.the assertions concerning a diminishing yield of whitefish rest either on a comparison of these statistics of isolated years or on the statements of fishermen concerning certain localities. "If we inquire into the facts concerning the sufficiency of the present methods of artificial propagation, we find that so far as concerns the whitefish there is no question as to the success of the earlier stages of the process. Several hundred million ova are taken annually and placed in the hatcheries and of these usually from 80 to 90 percent are hatched and placed in the waters of the Great Lakes - 165,000,000 in Lake Erie alone in 1888. "This is very nearly all that is known about these young whitefish. About their food habits we know only that in captivity that they eat certain species of Crustacea. Whether in their natural habitat they eat other animals in addition to these Crustacea or in preference to them we do not know. It is uncertain at what age they begin to take food or how much they require. We do not know their natural enemies. We do not know whether they thrive best in running water or in standing water, in shallow water or in deep water, whether at the surface or near the bottom. What changes of habitat or of food habits the fish undergo as they grow older is a still deeper mystery. "Our problem is to place young whitefish in the Great Lakes under such conditions that as large a number as possible of them shall grow into adult fish. It is clear that of one of the elements in this problem namely, the whitefish, we know but little. "What, then, do we know of the other elements of the problem, the Great Lakes themselves? About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
Author: Leslie Main Johnson
Publisher: Athabasca University Press
ISBN: 189742535X
Category : History
Languages : en
Pages : 269
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Book Description
This sensitive examination of the meanings of landscape draws on the author's rich experience with diverse enviornments and peoples: the Gitksan and Witsuwit'en of norwestern British Columbia, the Kaska Dena of the southern Yukon, and the Gwich'in of the Mackenzie Delta. Johnson maintains that the ways people understand and act upon land have wide implications, shaping cultures and ways of life, determining identity and polity, and creating and mainting environmental relationships and economies. Her emphassis on landscape and ways of knowing the land provides a particular take on ecological relationships of First Peoples to land.
Author:
Publisher:
ISBN:
Category : Monographic series
Languages : en
Pages : 3328
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Author: Graham MacDonald
Publisher: Athabasca University Press
ISBN: 1897425376
Category : Biography & Autobiography
Languages : en
Pages : 265
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Book Description
This book explores a relatively small, but interesting and anomalous, region of Alberta between the North Saskatchewan and the Battle Rivers. Ecological themes, such as climatic cycles, ground water availability, vegetation succession and the response of wildlife, and the impact of fires, shape the possibilities and provide the challenges to those who have called the region home or used its varied resources: Indians, Metis, and European immigrants.
Author:
Publisher:
ISBN:
Category : American literature
Languages : en
Pages : 798
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Book Description
