. Corals and coral islands. Coral reefs and islands; Corals. ORIQIK OF THE BARRIER REEF, 261 There are two peaks in the lagoon-, precisely as above; and although we have no soundings of the waters in and about it nor sketches of peaks, facts observed elsewhere authorize in every essential point the transverse section here given, which resembles closely, as is apparent, the preceding. The section is made through the line h 6, V b\ of the map. It is unneces- sary to add other illustrations. They may be made out from. ICAP, AND IDEAL SECTION, OP AIVA ISLAND. anv of the eastern groups of the Feeje
. Corals and coral islands. Coral reefs and islands; Corals. ORIQIK OF THE BARRIER REEF, 261 There are two peaks in the lagoon-, precisely as above; and although we have no soundings of the waters in and about it nor sketches of peaks, facts observed elsewhere authorize in every essential point the transverse section here given, which resembles closely, as is apparent, the preceding. The section is made through the line h 6, V b\ of the map. It is unneces- sary to add other illustrations. They may be made out from. ICAP, AND IDEAL SECTION, OP AIVA ISLAND. anv of the eastern groups of the Feejees, the Gambier Group of the Paumotus, or Hogoleu in the Carolines. Wallis's Island is another example of islets of rock in a large lagoon enclosed by a distant barrier. It has been asked, why the interior channels do not become filled by coral reef, as the island sinks, and thus a plane of coral result^ instead of a narrow belt; and this has been urged against the theory. But it is a sufficient reply to such an argu- ment to state the fact that the subsidence admits of no doubt, and that the islands, referred to as exemplifications of it, pre- sent this very peculiarity. It should be received, therefore, as a consequence of it, instead of an objection to the view, for it is the most common feature with all islands that have broad reef-grounds, or in other words, that show evidence of subsi- dence during the gro^^i;h of the reefs. Broad channels, and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dana, James Dwight, 1813-1895. New York, Dodd & Mead
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishernewyo, bookyear1874
