MAURITIUS, fringing-reefs of. Depths at which corals live there. Recently elevated. Mauritius. MAURUA, section of. Maurua. MENCHIKOFF atoll. Mendana archipelago. Mendana isles. Mexico, gulf of. MILLEPORA COMPLANATA at Keeling atoll. Mindoro. Mohilla. (Mohila.) MOLUCCA islands, recently elevated. Mopeha. MORESBY, Captain, on boring through coral-reefs. Morty. Mosquito coast. MUSQUILLO atoll. Mysol. NAMOURREK group. Natunas. NAVIGATOR archipelago, elevation of. Navigator archipelago. Nederlandisch. NELSON, Lieutenant, on the consolidation of coral-rocks under water. Theory of coral-formations. On the Bermuda islands. New Britain. NEW CALEDONIA, steepness of its reefs. Barrier-reef of. New Caledonia. New Guinea (E. end). New Guinea (W. end). New Hanover. NEW HEBRIDES, recently elevated. New Hebrides. NEW IRELAND, recently elevated. New Ireland. New Nantucket. Nicobar islands. Niouha. NULLIPORAE at Keeling atoll. On the reefs of atolls. On barrier-reefs. Their wide distribution and abundance. OBJECTIONS to the theory of subsidence. Ocean islands. Ono. Onouafu. (Onouafou.) Ormuz. Oscar group. OSCILLATIONS of level. Ouallan, or Ualan. (Oualan.) OULUTHY atoll. Outong Java. Palawan, S.W. coast. N.W. coast. Western bank. Palmerston. Palmyra. Paracells. Paraquas. Patchow. Pelew islands. PEMBA island, singular form of. Pemba. Penrhyn. Peregrino. PERNAMBUCO, bar of sandstone at. PERSIAN gulf, recently elevated. Persian gulf. PESCADO. Pescadores. Peyster group. Philip. PHILIPPINE archipelago, recently elevated. Philippine archipelago. Phœnix. Piguiram. Pitcairn. PITT’S bank. Pitt island. Platte. Pleasant. PORITES, chief coral on margin of Keeling atoll. Postillions. POUYNIPETE. Its probable subsidence. Pouynipète. Pratas shoal. Proby. Providence. Puerto Rico. Pulo Anna. PUMICE floated to coral-islands. Pylstaart. PYRARD DE LAVAL, astonishment at the atolls in the Indian Ocean. QUOY AND GAIMARD, depths at which corals live. Description of reefs applicable only to fringing-reefs. RANGE of atolls. Rapa. Rearson. RED SEA, banks of rock coated by reefs. Proofs of its recent elevation. Supposed subsidence of. Red Sea. REEFS, irregular in shallow seas. Rising to the surface in some lagoons and all submerged in others. Their distribution. Their absence from some coasts. Revilla-gigedo. RING-FORMED REEFS of the Maldiva atolls, and theory of. Rodriguez. Rosario. Rose island. Rotches. Rotoumah. Roug. Rowley shoals. RUPPELL, Dr., on the recent deposits of Red Sea. Sable, ile de. Sahia de Malha. St. Pierre. Sala. Salomon archipelago. (Solomon.) SAMOA, or Navigator archipelago, elevation of. Samoa archipelago. SAND-BARS parallel to coasts. Sandal-wood. SANDWICH archipelago, recently elevated. Sandwich archipelago. Sanserot. Santa-Cruz group. SAVAGE island, recently elevated. Savage. Savu. Saya, or Sahia de Malha. Scarborough shoal.