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According to D'Entrecasteaux the western shore abounds with coral-reefs, and the smaller islands are said to be attached to the larger ones by reefs; all the before-mentioned islands have been coloured red. BOUKA Islands.
But his self-complacency was well armoured, and he did not hear the jokes of which he was the subject, especially by the little clique of which Black Paul was the centre. But the sailing-master knew his business, and the Revenge was safely, though slowly, sailed among the coral-reefs and islands until she dropped anchor off Belize.
In Captain Owen's chart, and in that in the "Atlas of the Voyage of the 'Favourite'," it appears that the east side of MAHE and the adjoining islands of ST. ANNE and CERF, are regularly fringed by coral-reefs. A portion of the S.E. part of CURIEUSE Island, the N., and part of the S.W. shore of PRASLIN Island, and the whole west side of DIGUE Island, appear fringed.
The high limestone mountains which part Lancashire and Yorkshire the very chine and backbone of England were once coral-reefs at the bottom of the sea. They are all made up of the carboniferous limestone, so called, as your little knowledge of Latin ought to tell you, because it carries the coal; because the coalfields usually lie upon it.
Over the seas on which we were sailing it was necessary, both night and day, to keep a very sharp look-out; not only for whales, but to avoid the dangers of coral-reefs, and islands of all sizes, which in many parts sprinkle it so thickly. "Land ahead!" was shouted from the foretopmast-head one forenoon, as we were slowly gliding over the blue surface of the deep.
I have, however, thought myself compelled, from its large size and symmetrical outline, to colour it blue. Kotzebue, in his "Second Voyage," contrasts the structure of these islands with many others in the Pacific, in not being furnished with harbours for ships, formed by distant coral-reefs. The Rev.
Of this elevation within very recent times we have abundant evidence in the existence of raised coral-reefs and oceanic shell-beds at intervals all along the coast; rising in Peru to a level of no less than 3,000 feet above the ocean, as shown by Alexander Agassiz. Such elevations probably occurred at a time when the volcanoes of the Andes were much more active than at present.
J. Williams, however, informs me, that coral-reefs do occur in irregular patches on the shores of these islands; but that they do not form a continuous band, as round Mangaia, and other such perfect cases of fringed islands. From the charts accompanying La Peyrouse's "Voyage," it appears that the north shore of SAVAII, MAOUNA, OROSENGA, and MANUA, are fringed by reefs. Mr.
It has been already remarked that there are rocks in the interior of continents, at various depths in the earth, and at great heights above the sea, almost entirely made up of the remains of zoophytes and testacea. Such masses may be compared to modern oyster-beds and coral-reefs; and, like them, the rate of increase must have been extremely gradual.
Lyell's anticipation that the theory of coral-reefs would be slow in meeting with general acceptance was certainly not justified by the actual facts. On the contrary the new book was at once received with general assent among both geologists and zoologists, and even attracted a considerable amount of attention from the general public.
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