INDEX. 



ACALKPHS, characters of, 323 



Acontia, 15 



Aiou, 262 



Actinacea, 40 



Actinaria, 40 



Actinoid Polyps, 5 



Aciamsia pall lata, 16 



Admiralty Islands, 264 



Africa, reefs of eastern, 268 



Agassiz, L., on Astrangia, 46 



,, depth of reef corals, 90 



,, coral borers, 95 



,, on Florida reefs, 169 



,, on Bahamas and Salt 



Key Bank, 1 74 et seq. 



Agassiz, A., on Arachnactis, 11, 

 ,, Seaside Studies, 46, 



80 



Ahii, 138 143, 148, 164 



Aitutaki, 288 



Aiva, 224 



Alcyonacea, 58 



Alcyonium, derivation of term, 57 



Alcyonoid, polyps, 57 



Almirante, 268 



Aveopora, 54 



,, spongiosa, 54 

 ,, Verilliana, 54 



Andrews, on Molokai and Maui, 

 292 



Anguilla Key, 179 



Antipathacea, 42 



Antipathes arborea, 41 



Anthea cereus, 19, 36 

 ,, flagellifera, 19 



Anthelia lineata, 59 



Apaiang, elevation of, 134, 294 



Apamama, 132, 294 



Apatite on Mauke, 254. 



Apia on Upolu, harbour of, 204 



Aratica, 143, 146, 166 



Ami Group, 265 



Ascension Island, 306 



Asia, temperature of ocean along 

 the east coast of, 256 



Asia, 262 



Astrrca pallida, 36, 43 

 Astra;acea, 43 



„ distribution of, 84 



Astrangia Dance, 46 

 Atiu, 158, 260, 288, 310 

 Atlantic Ocean, subsidence in, 316, 



317 

 Atolls, structure of, 130, 131, 141 

 Atoll reefs, origin of, 211 



,, origin of lagoons of, 



218, 227 

 ,, completed, 233 

 Aurora Island, 158 

 Australian reefs, 107, 113, 118, 264, 



265, 282 

 Bahamas, 174, et seq. 

 Bahama region, subsidence in, 316 

 Bailey, J. W., on absence of fora- 

 minifers from chalk of Oahu, 



309 

 Baker's Island, 248, 291 

 Balbi, remarks on encircling reefs, 



228 

 Barrier reefs, origin of, 218, 219 

 Beach formations, 149 

 Beechey, on Henderson Island, 159 



,, soundings by, 139 



,, remarks on Gambler 

 Islands, 227 



„ on Elizabeth Island, 286 



,, on Ducie's and Osnaburgh 



,, Islands, 286, 287 



Benaze, rate of growth of reef at 



Tahiti, 2i6« 

 Bermudas, corals of, 88 ; structure 



of islands, 149, 182, 185 



,, geological character of 

 the, 185 et seq. 



,, the result of an upheaval 

 of the ocean bed, 186 



,, former height and extent 

 of, 185, 187, 317 



,, caverns of, 310 

 Beveridge reef, 289 

 Biche-de-Mar, 129 

 Birds of Coral Islands, 242 



