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 Books LLC
|Country of origin:
New South Wales Fisheries
||246 x 189 x 1mm (L x W x T)
||Paperback - Trade
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