v> 



u. 



^5t 



4k 



s 



^-^nt^ 



^ 



F*, ^ 





ta. 



It - 



;i*l 



^ 



%. 



i 



jlWrns^ .; 



. ■ ■-• k 



!•: 



i.i.j 



",v 





i. — J 



^ i Eioiie, 





V 



( 



-':3.i- 



• -■"■ of 



.. a. o;» 



6 



I- 





-.fl'' 



' 4 



f 



■ 111) 



3i 



GENEEAL INDEX. 



623 



DEN 



Penmark, inroads of the sea in, i. 557 

 Denudation and deposition, i. 107 

 Deposition and denudation, parts of the 



same process, i. 107 

 Deposits, stony, of the Ehone delta, i. 



429 



De Saussure on motion of glaciers, i. 369 

 Descloizeaux on Icelandic geysers, ii. 220 

 Deshayes, on fossil shells of Etna, ii. 5 

 Desmarest, his definition of Geology, i. 4 



on volcanos of Auvergne, i. 72 

 Desor, M., on fish found in Artesian 



wells, i. 393 



— glacier motion, i. 371 



tropical aspect of some beds 



associated with flysch, i. 210 

 Deucalion's deluge, i. 593 



Deville, St. Claire, on contraction of 

 granite, i. 134 



— hydrogen in volcanic eruptions, 

 ii. 224 



— contraction of granite in so- 

 lidifying, ii. 236 



Devonian period, supposed ice-action of, 

 i. 230 



— climate of, i. 229 

 Devonshire, waste of coast in, i. 538 

 Dezertas, land-shells of, common to 

 Madeira, ii. 425 



— Monhia edulis, a plant peculiar to 

 the, ii. 418 



Diatomacese in volcanic tuff, i. 644 

 Dikes in Vesuvius, how^ formed, i, 627 



— greenstone of Etna, ii. 9 



— in Val del Bove, on Etna, ii. 16 



rarity of, far from eruptive centres, 

 ii. 17 



Diluvial theories, i. 38, 44 



Diodorus Siculus on Samothracian de- 

 luge, i. 593 



on St. Michael's Mount, Cornwall 



i. 539 



Dion Cassius on Herculaneum and Pom- 

 peii, i. 604 



Disco Island, in Greenland, Miocene 



fossil trees near, ii. 203 

 Dodo, extinction of the, ii. 456 



Dog, different races, how far varvino- 

 ii. 263 ^ "" 



Lamarck on origin of, ii. 250 



— multiple origin of the, ii. 293 



— inherited instincts in, ii. 294 



— introduced in Juan Eernandez, de- 

 stroyed the goats, ii. 450 



Dogger Bank, heaping up of the, i. 569 

 :^oilart, how formed, i. [^^5 

 Dolomieu on basalt of Etna, i. . . 



-— — Calabrian earthquake, ii. 117, 123 

 129, 140 



Domestic races breed together, ii. 284 

 varieties becoming 'feral,' ii. 304 



^3 



EAR 



Domestication, aptitude of some animals 

 for, ii. 301 



— Lamarck on effects of, ii. 250 

 Domesticity eliminating sterility, ii 312 

 Donati on deposits in Adriatic, i. 426 

 bed of Adriatic, i. 57 



Donny, Mr., on the heating of water 



freed from air, ii. 220 

 D'Orbigny. See Orbigny. 



Dorsetshire, landslip and waste of cliffs 

 in, 1. 536 



Dove, Professor, on mean annual iso- 

 thermals, i. 239 



~. <^ii li^at of surface of the earth 



m aphelion, i. 275 



Dover, formation of Straits of, i. 516 



— waste of cliffs of, 515 



Downham, town overwhelmed bv sand 

 flood, ii. 508 



Dranse, Eiver, flood of, i. 354 

 Drift, climate of European, i. 192 

 Drift sand, fossils in, ii. 508 

 Driftwood of Mississippi, i. 646 " 

 Mackenzie Eiver, ii, 526 



Drinkwater on 'Life of Galileo' (note), 

 ]. 83 



Druids, their theory of the universe, i 

 25 



Duchassaing, M., on depth of coral 



growth m the sea, ii. 580 

 Dufr^noy, M., on formation of Monte 



Nuovo, i. 610 



hypothesis of elevation craters, i. 



633 



Dujardin, M., on shells and seeds rising 

 in Artesian wells, i. 393 



Duncan, Dr., on West Indian corals i 

 254 



coral reefs, ii. 606 



growth of corals, ii. 581 



Dunes, hills of blown sand, i. 514 

 Dunwich, destruction of, by the sea i 

 519 



Dwarfs Tower, near Viesch, i. 342 



EAETH, antiquity of the, i. 32 

 — density of the, ii. 202 



section of the, showing outer crust 

 ii. 212 



■ spheroidal figure of, does not prove 

 original fluidity, ii. 199, 240 



■ snpposed central fluidity of, ii. 199 



theories of original formation of the, 

 ii. 200 



Earth-pillars formed by rain, i. 335 



in Switzerland, i. 340 



diagram of formation of, i. 337 



Earthquake at Visp destroyed earth- 

 pillars, i. 341 



focus, depth of, ii. 139 



