526 
Ophaothrix liitkeni, 100. 
Orbitolites tenwissimus, 91, 194. 
Orbulina universa, 23 
1 
Pecten hoskynsi, 465. 
Pedicellaster typicus, 456. 
Pentacrinus wyville-thomsoni, 186, 443; 
P. asteria, 436; P. P, Miilleri, 442. 
Petermann, Dr., on the Gulf—stream, 287, 
379, 392. 
Pheronema anne, 418. 
Phormosoma placenta, 171, 459. 
Phosphorescence, 98, 148. 
Pierce, Professor, on the Gulf-stream, 
386. 
Platydia anomioides, 146. 
Pleuronectia lucida, 464, 465. 
Polycystina, 98. 
*Poreupine,’ 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 cruise, 101; Holte- 
nia ground, 104; the hempen tangles, 
105; Thorshayn, 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, 190; 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. 
Pourtalesia jeffreysi, 108, 457, 
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.R.S., President of 
the Geological Society : Temperatures 
of the Atlantic, 358 ; on the continuity 
of the chalk, 496. 
Psammechinus ‘microtuberculatus, AD Tawra 
miliaris, 459 
Psolus squamatus, 125. 
Pteraster militaizs, 171. 
R. 
459, 489 ; 
Rhabdammina abyssorum, 75. 
Rhizocrinus loffotensis, 76, 124, 447, 451. 
INDEX. 
Richards, Rear-Admiral, C.B., F.RS., 
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.) 
Ss. 
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 460 fathoms, 33, 268, 
270, 274. 
Schizaster canaliferus, 459. 
Schmidt, Professor Oscar, on Hexactinel- 
lide, 70; Cometella, 114, 268, 416. 
Schultze, Professor Wess on Hyalonema, 
495. : 
Serpula, 273, 
Sharks at great depths, 54. 
Shortland, Captain, k.N., temperatures 
of deep ‘water in the Arabian Sea, 359. 
Smith, Toulmin J., on Ventriculites, 482. 
Solaster furcifer, 119, 456; S. papposus, 
118. 
Spaiongus vaschi, 118; S. purpureus, 
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. 
ay. 
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. 
Thecophora semisuberites, 147; T. cbla, 
148. 
Thecopsammia soctalis, 433. 
Thermometer, Six’s, 288 ; Miller-Casella, 
