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書籍 ... made by worms. But however efficient these boring animals may be in preparing... の書籍検索結果 7 件中 1 - 7 件目
" ... 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 - 108 ページ
1852
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Senate Documents, Otherwise Publ. as Public Documents and Executive ...

United States. Congress. Senate - 1852
...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...

Corals and Coral Islands

James Dwight Dana - 1872 - 398 ページ
...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...

The Parallel Roads of Glenroy: Their Origin and Relation to the Glacial ...

1883 - 149 ページ
...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...

Toilers in the Sea

Mordecai Cubitt Cooke - 1889 - 373 ページ
...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...

Corals and Coral Islands

James Dwight Dana - 1890 - 440 ページ
...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...

Corals and coral islands

James D. Dana - 1899
...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...

House Documents, Otherwise Publ. as Executive Documents: 13th ..., 第 4 巻、第 1 部

United States. Congress. House
...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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