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Articles on the Propagation of Oysters (Paperback) Loot Price: R273
Discovery Miles 2 730
Articles on the Propagation of Oysters (Paperback): New South Wales Fisheries
Articles on the Propagation of Oysters (Paperback): New South Wales Fisheries

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Articles on the Propagation of Oysters (Paperback)

New South Wales Fisheries

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Loot Price R273 Discovery Miles 2 730

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1885. Excerpt: ... The history of the oyster fisheries of Arcachon is not less instructive. The Bay of Arcachon may be almost said to be made for oysters. It has the shape of an equilateral triangle, nine or ten miles on the side; and it debouches by a channel, 30 fathoms deep at the mouth, situated at its northernmost angle, into the Bay of Biscay. The winds and waves of this stormy region have thrown up a range of high sand dunes along the western boundary, and these dunes, covered with pines, shelter the bay from the violence of the westerly gales. The difference of height between high and low water (ordinary tides) is 15 to 16 feet. At flood tide, the whole surface of the bay, except an island in the middle (He des Oiseaux) is covered, but, at ebb tide the greater part is dry, except in so far as it is traversed by narrow channels, varying from 40 to 10 feet in depth, formed by the water as it retires into the deep outer passage at the ebb and returns at the flood. The interspaces between the channels thus laid bare at each ebb are called "cressats." The bottom is composed of sand and shells, with more or less mud. The quantity of the latter constituent is said to be gradually increasing; and, in many parts, old oyster beds are silted up and covered with mud. The salinity varies, being least in the northern angle, where much fresh water flows in. Elsewhere the saline constituents amount to 3 per cent, or more, and in hot and dry seasons they may exceed those of the Atlantic water outside. M. Tolle says, in his report to the German Government on the oyster fisheries of France: --"The cressats are the old oyster beds of Arcachon, once thought to be inexhaustible, which yearly yielded seventy to seventy-five million oysters of different kinds and sizes, of the value of 225, ...

General

Imprint: General Books LLC
Country of origin: United States
Release date: February 2012
First published: February 2012
Authors: New South Wales Fisheries
Dimensions: 246 x 189 x 1mm (L x W x T)
Format: Paperback - Trade
Pages: 22
ISBN-13: 978-1-235-67520-1
Barcode: 9781235675201
Categories: Books
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LSN: 1-235-67520-3

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