526 



INDEX. 



Ophiollirix liitkeni, 100. 

 Orbitolites tenuissimus, 91, 194. 

 Orbulina universa, 23. 



P. 



Pecten hoslcynsi, 465. 



Pedicellaster typicus, 456. 



Pentacrinus ivyville-thomsoni, 186, 443 ; 

 P. asteria, 436 ; P. P. Miilleri, 442. 



Petermann, Dr., on the Gulf -stream, 287, 

 379, 392. 



Pheronema annce, 418. 



Phormosoma placenta, 171, 459. 



Phosphorescence, 98, 148. 



Pierce, Professor, on the Gulf- stream, 

 386. 



Platydia anomioides, 146. 



Pleuronectia lucida, 464, 465. 



Polycystina, 98. 



' Porcupine,' first cruise of the, 82 ; equip 

 ment of the vessel, 83 ; results of the 

 first dredging, 86 ; first trial of the 

 Miller-Casella thermometers, 88 ; Por 

 cupine Bank, 88 ; trip to Rockall, 89 ; 

 second cruise, 93 ; dredging at the 

 depth of 2,435 fathoms, 95 ; return to 

 Belfast, 100 ; third cruhe, 101 ; Holte- 

 nia ground, 104 ; the hempen tangles, 

 105 ; Thorshavn, 106 ; discovery of 

 Arctic stream, 110 ; Shetland plateau, 

 111 ; predominance of the Arctic fauna, 

 131 ; fauna of the warm area off the 

 north coast of Scotland, 177 ; return 

 to Belfast, 178 ; fourth cruise of the 

 ' Porcupine,' 179 ; cruise in the Medi 

 terranean, 193 ; fauna near the African 

 coast, 192 ; Adventure Bank, 192 ; 

 Malta, 194 ; temperature soundings 

 near Stromboli, 195 ; return to Cowes, 

 196. 



Porocidaris purpurata, 102, 459. 



Pourtales, Count L. F. de, deep-sea dredg- 

 ings across the Gulf-stream off the coast 

 of Florida, 277. 



1'ourtalesia j'ffreysi, 10S, 457, 459, 489 ; 



P. phiale, 90, 459. 

 Predominance of protozoa, 47. 

 Preservation of specimens, 261. 

 Pressure, conditions of, at great depths, 

 32 ; methods of testing the actual pres 

 sure, 34 ; effect of pressure on the 

 thermometer, 294. 



Prestwich, Joseph, F.K.S., President of 



the Geological Society : Temperatures 



of the Atlantic, 358 ; on the continuity 



of the chalk, 496. 



Psammechimts microtuberculatus, 457 ; P- 



miliaris, 459. 

 Psolus squamatus, 125. 

 Pter aster militaris, 171. 



R. 



Rhabdammina abyssorum, 75. 

 Rhizocrinvs loffotensis, 76, 124, 447, 451. 



Richards, Rear- Admiral, C.B., F.R.S., 

 Hydrographer to the Navy, 3. 



Ross, Sir James Clark, R.N., deep 

 dredgings in the Antarctic Sea, 20 ; 

 temperature observations, 304. 



Ross, Sir John, voyage of discovery in 

 Baffin's Bay, 18 ; machine for taking 

 up soundings from great depths, 209 ; 

 temperature observations during the 

 Arctic voyage, 300. 



Rossella velata, 419. 



Royal Society, letter to, from Dr. Car 

 penter, recommending a systematic 

 course of deep-sea dredging, 53 ; letter 

 from the Secretary of, to the Secretary 

 of the Admiralty, 55 ; reply from the 

 Admiralty, 56 : (see also 133-141.) 



3. 



Sabine, General Sir Edward, K.C.B., 



extracts from private journal, 18, 300. 

 Sars, Professor Michael, list of animals of 



all the invertebrate groups living at a 



depth of 300 to 400 fathoms, 33. 268, 



270, 274. 



Schizaster canaliferns, 459. 

 Schmidt, Professor Oscar, on Hexactinel- 



lidaj, 70 ; Cometella, 114, 268, 416. 

 Schultze, Professor Max, on Hyalonema, 



425. 



Serpula, 273. 



Sharks at great depths, 34. 

 Shortland, Captain, R.N., temperatures 



of deep water in the Arabian Sea, 359. 

 Smith, Toulmin J., on Ventriculites, 482. 

 tiolaster furo'fer, 119, 456; S. papposus, 



118. 

 Spatangus raschi, 118 ; S. purpurem, 



459. 



Spirorbis, 273. 

 Spratt, Captain, R.N., dredging in the 



Mediterranean, 270. 

 Steenstrup, Professor, additions to the 



knowledge of marine zoology, 268. 

 Stylocordyla borealis, 114. 

 Surface-temperature, mode of determin 

 ing the, 287 ; distribution of, in the 



North Atlantic, 362. 



Tanks for the transportation of living 



fish, 59. 



Tellina calcarea, 462 ; T. compressa, 464. 

 Temperature of the crust of the earth, 



404. 



Terebratula septata, 130. 

 Tliecophora semisuberites, 147; T. ibla, 



148. 



Thecopsammia socialis, 433. 

 Thermometer, Six's, 288 ; Miller-Casella, 



