Corals and Coral IslandsDodd & Mead, 1872 - 398 ページ |
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Actinia afford animal Apamama Astræa atolls AUTHOR'S REPORT Bank barrier reefs beach sand-rock beds bottom branches budding calcareous Cape Chagos Bank change of level channels character coast compact coral islands coral reef-rock coral reefs coral rock corallum currents Dana Darwin débris deep deposits depth detritus diameter east Echinoderms elevation evidence extent facts fathoms Feejees feet high Florida formation fragments fringing reef Gilbert Islands gradually Group growing corals growth guano Gulf Stream harbor Hawaian height high islands hundred feet inch inner reefs islets lagoon land layers lime limestone living corals Madrepores Maldives margin masses miles nearly Oahu observed ocean oölite outer reef Pacific patches Paumotus polyps Porites Raraka region Salomon Islands sand shallow shells shore platform side slope sometimes species streams submerged subsidence surface Tahiti tentacles thick tion Tongatabu unchanged Upolu Verrill volcanic waves yards zoöphytes