INDEX. 



211 



Oceanic basins, Agassiz, L., on, i. 4. 



Kriinimel on, i. 12(J. 



permanence of, i. 125. 



pressure on rocks below, i. 182. 



soundings in, by "Challenger," i. 260. 



temperature of, i. 24(). 



Thomson, C. Wyville, on, i. 4. 



topography of, i. 107. 

 Oceanic circulation, tradewind theory of, i. 

 247. 



Thomson's theory of, i. 247. 

 Oceanic currents, theories of, i. 247- 



in past ages, i. 128. 



slow movements of, i. 302. 

 Oceanic deposits, organic ooze and red clay 



of, i. 264. 

 Oceanic districts, .salinity of, i. 248. 

 Oceanic islands, i. 117. 

 Oceanic realms, specialization of, i. 160. 

 Oceanic temperature, distui'bing factors of, i. 



248. 

 Ocyroe cristallina, ii. 120. 

 Ocyroij, Fewkes, J. W. , on, ii. 129. 

 Ocyroe maculata, ii. 129. 

 Oersted on bathymetrical belts, i. 162. 

 Old Bahama Channel, i. 2. 

 Old-fashioned types in shallow water, i. 



156. 

 Oolitic and breccia limestone at Loggerhead 



Key, i. 76. 

 Oolitic limestone, modern, i. 286. 

 Ooze adapted for preservation of animals, i. 



170. 

 Oijhiactis swarming on sponges, ii. 113. 

 Ophidiidse, ii. 56. 

 Ophidium cervinum, ii. 26. 

 Ophiernns, ii. 5. 



Ophiocamax hystrix, ii. 5, 110, 111, 114. 

 Ophioconis miliaria, ii. Ill, 112. 

 Ophiocreas, ii. 5. 



Ophiocreas spinulosus, ii. 109, 114. 

 Ophiohelus umbella, ii. 116. 

 Ophiolipus Agassizii, ii. 115. 

 Ojahiomastus secundus, ii. 113. 

 Ophiomitra valida, ii. 11.5. 

 Ojjhiomusium Lymani, ii. 114. 

 Ophiomusium planum, ii. Ill, 112. 

 Ophiomyces fruteetosus, ii. Ill, 113. 

 Ophiomyxa flaccida, ii. 1 13. 

 Ophioptepale Goesiana, ii. 111. 

 Ophiophyllum petilum, ii. 110. 

 Ophiothrix, colonies of, ii. 113. 

 Ophiozona nivea, ii. 5, 110. 

 Ophiura Elaps, ii. 111. 

 Ophiurans, ii. 109. 



bathymetrical range of, ii. 114. 



Ophiurans, known previous to ' ' Blake ' ' Ex- 

 pedition, ii. 5. 



phosphorescence of, i. 199. 



Keport on, by T. LjTuan, i. xxi. 

 Ophiuridie, Lyman on, ii. 109. 

 Opisthoteuthis Agassizii, ii. 58. 

 Oplophorus, ii. 47. 

 Orbiculina adunca, ii. 160. 

 Orbitolites, ii. 160, 161. 

 Orbulina, i. 194. 

 Orbulina universa, ii. 166, 1G7. 



Krohn on, ii. 167. 



Pourtalcs on, ii. 167. 

 Organic matter, at distance from shore, lim- 

 ited supjjly of, i. 269. 



as food for deep-sea life, i. 313. 



held in sixspension near shore, i. 269. 

 Organs of sense, in deep-sea fishes, ii. 22. 



gTeat development of, in embryos, i. 176. 

 Organs of vision of deep-sea invertebrates, i. 



165. 

 Orthagoriscus, i. 193. 

 Oscillations of earth's surface, i. 126. 

 Ostracods, ii. 51. 

 Ostraconotus spatulipes, ii. 42. 

 Otoliths of fishes, in bottom deposits, i. 281. 



in fine muds, i. 145. 

 Otter, von, i. 42, 1.39 ; ii. 142. 

 Oxygen and carbonic acid in sea water, i. 297. 

 Oxygen in sea water, Dittmar on, i. 295. 



Jacobsen on, i. 295. 



Pacific and Atlantic isotherms, i. 248. 



Pajlopatides confundens, ii. 88. 



Paguroidea, ii. 40. 



Palsecliinidae, ii. 94. 



Palaeotropus Josephinie, ii. 100. 



Paleopneustes hystrix, ii. 100. 



Palimirus, i. 175. 



Pallenopsis, ii. 50. ' 



Panceri on phosphorescence of marine ani- 

 mals, i. 198. 



Pandalus, ii. 46. 



Paracyathns confertus, ii. 149, 1.50. 



Para.sitic algse, Geza Entz on, i. 214. 



Parasitic fungus, P. M. Duncan on, i. 166. 



Parasitism, different kinds of, i. 215. 



Parry on deep-.sea temperatures, i. 46. 



Passage of littoral to abyssal regions, ii. 7. 

 ! Passages between Windward Islands swept 

 clean, i. 23(). 



Patterson, Carlile P., i.vii, 49. 



Patterson Deep, i. 106. 



Pecten Dalli, ii. 72. 



Pecten phrygiuni. ii. 72. 



Pecten Pourtalesianum, ii. 73. 



