. Corals and coral islands. Coral reefs and islands; Corals. 6o CORALS AND CORAL LSLANDS. Other Alcyonoids are much branched, with die branched thick and finger-like, and soft or tlexible, and the polyps small and wholly retractile into the mass. The branches, bare of polyps, are usually of some dull pale colour, and on account of this fact some of these Alcyonia go by the common name of dcad-jnetis fingers. Some of the species form thick lobed plates over the rocks ; and occasionally they are brightly coloured, even when the polyps are unexpanded. The above kinds secrete granules or spicules
. Corals and coral islands. Coral reefs and islands; Corals. 6o CORALS AND CORAL LSLANDS. Other Alcyonoids are much branched, with die branched thick and finger-like, and soft or tlexible, and the polyps small and wholly retractile into the mass. The branches, bare of polyps, are usually of some dull pale colour, and on account of this fact some of these Alcyonia go by the common name of dcad-jnetis fingers. Some of the species form thick lobed plates over the rocks ; and occasionally they are brightly coloured, even when the polyps are unexpanded. The above kinds secrete granules or spicules of carbonate of lime in the tissues, and are harsher or softer in texture according to the proportion of these granules. Some species form branching tubes, rising from an incrusting base, which are rather firm owing to the calcareous spicuh^s present. Such species are referred to the genus Telesto—one. LINEATA, S F. 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. London : Sampson Low, Marston, Low and Searle
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Keywords: ., bookauthordanajame, bookcentury1800, bookdecade1870, bookyear1875
