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" ... made by worms. But however efficient these boring animals may be in preparing the coral stems for decay, there is yet another agent, perhaps still more destructive. We allude to the minute boring-sponges, which penetrate them in all directions, until... "
Report of the Superintendent ... Showing the Progress of the Work - Página 137
por U.S. Coast and Geodetic Survey - 1852
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Senate Documents, Otherwise Publ. as Public Documents and ..., Volumen5

United States. Congress. Senate - 1852 - 624 páginas
...basis of a Macandrina, measuring less than two feet in diameter, we have counted not less than fifty holes of the date-fish — some large enough to admit...they appear at last completely rotten throughout. * * » » * * • Skip Channel. The broad channel extending the whole range of the reef, between the...
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Corals and Coral Islands

James Dwight Dana - 1872 - 430 páginas
...fifty holes of the date-fish — some large enough to admit a finger — besides hundreds of small ones made by worms. But however efficient these boring...directions, until they appear at last completely rotten through." On the other hand Serpulas and certain kinds of barnacles (of the genus Creusja, etc.) penetrate...
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The Parallel Roads of Glenroy: Their Origin and Relation to the Glacial ...

James Macfadzean - 1883 - 188 páginas
...fifty holes of the date-fish — some large enough to admit a finger— besides hundreds of small ones made by worms. But however efficient these boring...directions, until they appear at last completely rotten through." [Oana.] Here we have examples of the existing checks to the growth of coral reefs ; and a...
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Toilers in the Sea

Mordecai Cubitt Cooke - 1889 - 408 páginas
...fifty holes of the date-fish—some large enough to admit a finger —beside hundreds of small ones made by worms. But however efficient these boring...directions, until they appear at last completely rotten through." l Yet the coral animals would seem to contribute themselves a little protection from their...
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Corals and Coral Islands

James Dwight Dana - 1890 - 476 páginas
...fifty holes of the date-fish — some large enough to admit a finger — besides hundreds of small ones made by worms. But however efficient these boring animals may be in preparing the coral steins for decay, there is yet another agent, perhaps still more destructive We allude to the minute...
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Corals and coral islands

James D. Dana - 1899 - 474 páginas
...fifty holes of the date-fish — some large enough to admit a finger — besides hundreds of small ones made by worms. But however efficient these boring animals may be in preparing the coral steins for decay, there is yet another agent, perhaps still more destructive. We allude to the minute...
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House Documents, Otherwise Publ. as Executive Documents ..., Volumen4,Parte1

United States. Congress. House - 606 páginas
...holes of the date-fish — some large enough to admit a finger — besides hundreds of small hole* made by worms. But however efficient these boring...Ship Channel, The broad channel extending the whole razige of the reef, between the main keys and the outer reef, is rather uniform, having the same width...
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