276 



INDEX. 



PHI 



Philip, 222 



Philippine archipelago, recently ele- 

 vated, 178 



Philippine archipelago, 235 



Phoenix, 208 



Piguiram, 221 



Pitcairn, 198 



Pitt's bank, 149 



Pitt island, 213 



Platte, 243 



Pleasant, 213 



Porites, chief coral on margin of 

 Keeling atoll, 9 



Postilions, 232 



Pouynipete, 166 



its probable subsidence, 167 



Pouynipete, 220 



Prat as shoal, 238 



Proby, 211 



Providence, 243 



IWfc i?^o, 263 



Pwfo ^wno, 223 



Pumice floated to coral islands, 154 



Pylstaart, 209 



Pyrard de Laval, astonishment at the 

 atolls in the Indian Ocean, 20 



Quoy and Graimard, 



depths at which corals live, 113 



description of reefs applicable 



only to fringing-reefs, 1 73 



Eange of atolls, 165 



Rapa, 203 



Rearson, 205 



Eed Sea, 



banks of rock coated by reefs, 78 

 proofs of its recent elevation, 180 

 supposed subsidence of, 182 



Red Sea, 250 



Eeefs, 



irregular in shallow seas, 77 

 rising to the surface in some, 

 lagoons and all submerged in 

 others, 91 

 their distribution, 80 

 their absence from some coasts, 

 81 



SED 



Revilla-gigedo, 197 



Eing-formed reefs of the Maldiva 



atolls, and theory of, 44, 138 

 Rodriguez, 242 

 Rosario, 225 

 Rose island, 209 

 Rotches, 213 

 Routoumah, 212 

 Roug, 221 

 Rowley shoals, 230 

 Eiippell, Dr., on the recent deposits 



of Eed Sea, 180 



Sable, He de, 242 



Sahia de Malha, 241 



St. Pierre, 243 



Salomon archipelago, 218 



Samoan, or Navigator archipelago, 



elevation of, 176 

 Samoa archipelago, 208 

 Sandbars, parallel to coasts, 73 

 Sandalwood, 229 



Sandwich archipelago, recently ele- 

 vated, 173 



extension of, 189, 208 

 Sandwich Archipelago, 207 

 Sanserot, 223 

 Santa Cruz group, 216 

 Savage island recently elevated, 175 

 Savage, 209 

 Savu, 229 



Say a, or Sahia de Mala, 241 

 Scarborough shoal, 239 

 Scarus feeding on corals, 19 

 Schouton, 219 

 Stilly, 201 



Scoriae floated to coral islands, 154 

 Scott's reef, 230 

 Sections, 



of islands encircled by barrier- 

 reefs, 66, 131 



of Bolabola, 132 

 Sediment, 



in Keeling-lagoon, 19 



in other atolls, 35, 47 



injurious to corals, 87 



transported from coral-islands 

 far seaward, 154 



