524 



INDEX. 



Coralline Zone, 16. 

 Crinoidea, 434. 



Croll, James, on ocean currents, 376, 

 381. 



D. 



Dacrydium vitreum, 465. 



Darwin, Charles, M.A., F.R.S., 'Origin 



of Species,' 8. 

 D'Aubuisson, on deep-sea temperatures, 



360. 



Davis, Captain, R.N., testing thermo- 

 meters, 290, 295. 



Dayman. Joseph, Commander R N., 

 23, 229, 302 ; temperatures of the 

 Atlantic, 359. 



Deep-sea Sounding, 205 ; cup-lead, 210 ; 

 Brooke's deep-sea sounding apparatus, 

 211, 213 ; the 'Bulldog' sounding- 

 machine, 215 ; the ' Fitzgerald ' sound- 

 ing machine. 217 ; the 'Hydra ' sound- 

 ing-machine, 218 ; donkey-engine, 221 ; 

 derricks, 221 ; the 'accumulator,' 

 222 ; observed rate of descent of the 

 sounding instrument, 22-3 ; Massey's 

 sounding-machine, 225. 

 Deep-sea Temperature, doctrine of, 35 ; 

 distribution of heat in the sea, 36 ; 

 cold wall, 37 ; minimum temperature 

 of the sea, 38 ; proximity of warm 

 and cold areas, 131 ; great uniformity 

 of temperature at all depths in the 

 Mediterranean, 191, 285 ; serial 

 soundings for temperature, 309-325. 

 Depth of the Sea, 1 ; first successful 

 dredgings at great depths, 3 ; animal 

 forms found at depths of from 70 to 1,200 

 fathoms, 27 ; animal life abundant at 

 the bottom of the sea, 31 ; average 

 depth of the sea, 31 ; absolute stillness 

 at great depths, 37 ; penetration of 

 light, 45 ; abundance of the genera 

 Astropecten and Archaster, 121. 

 Despretz, M., researches on the maxi- 

 mum density of saline solutions, 35 ; 

 temperature of greatest density of sea- 

 water, 307. 



Dorynckxu thomsoni, 174. 

 Dredging Apparatus : Muller's dredge, 

 239 ; Ball's dredge, 240 ; deep-sea 

 dredges, 246 ; derrick, 247 ; accumu- 

 lator, 247 ; Aunt Sallies, 249 ; dredge- 

 rope, 249 ; dredging in shallow water, 

 244, 245 ; dredging in deep water, 

 253 ; hempen tangles, 256, 257 ; empty- 

 ing the dredge, 259 : dredging-sieves, 

 260. 

 Dredging Committee, members of, 265 ; 



Belfast Dredging Committee, 266. 

 Dredging Operations, on the coast of Ire- 

 land, 266 ; of England, 266 ; of Shet- 

 land and the Hebrides, 266 ; of Por- 

 tugal and the Mediterranean, 267 ; of 

 the North-east Atlantic, 267 ; of Nor- 

 way, Sweden, and Denmark, 268 ; of 



the Adiiatic, 268; of Algeria, 268; 



Spitzbergen, 269 ; Malta, 27U; Finland 



and Loffoten Islands, 270; United 



States, 277. 

 Dredging Paper, 281. 

 Duncan, Professor P. Martin, F.R.S., on 



deep-sea corals, 431. 



E. 



EcMnocucumistypica, 125, 175; Echino- 

 cyamus angulatus, 117, 459 ; Echino- 

 thuridse, wide distribution of, 171 ; 

 Echinus elegans, 76, 459 ; E. escu- 

 lentus, 458 ; E.jlemingii, 116, 458 ; E. 

 melo, 459 ; E. microstoma, 171, 459 ; 

 E. norvegicus, 76, 116, 459 ; E. rari- 

 spina, 459 ; E. rarituberculatus, 116. 



Ethma granulata, 176. 



Euplectella, 73. 



Eusirus cuspidatus, 125, 126. 



Evolution, doctrine of, 9. 



F. 



Findlay, A. G., on the Gulf-stream, 390. 



Fishes, new species of, 130. 



Flabellum distinctum, 432. 



Florida, fauna of the Strait of, 171. 



Foraminifera, 115, 166, 415, 478. 



Forbes, David, F.R.S., analysis of the 

 white chalk of Shoreham, 469 ; of the 

 Folkestone grey chalk, 469 ; on speci- 

 mens of Atlantic mud, 514-518. 



Forbes, Edward, F.R.S., 4; on the dis- 

 tribution of marine forms, 6 ; on the 

 immutability of species, 6 ; specific 

 centres of distribution, 7 ; the law of 

 representation, 8, 13 ; zones of depth, 

 15 ; representative forms, 17 ; inverted 

 analogy between the distribution of 

 the fauna and flora of the land and of 

 the sea, 44 ; on dredging, 266. 



Fossil Echinidse, 162. 



Frankland, Dr., F.R.S., analysis of sea- 

 water, 511-513. 



Fusus sarsi, 464. 



G. 



Geryon tridens, 88. 



Globigerina bulloides, 22, 416. 



Gonoplax rhomboides, 87. 



Goodsir, Henry, deep dredging in Davis' 



Strait, 21. 

 Gray, Dr. John Edward, F.R.S., on 



Hyalonema, 422. 

 Gulf-stream, 286, 356 ; description of, 



379; progress and extension of, through 



the North Atlantic, 385. 



H. 



Haeckel, Professor Ernst, 9 ; biological 



studies, 408. 

 Halichondridae. 74. 



