308 



INDEX. 



Darwin, Mr. C., on gradual rise of parts 

 of S. America, 63. 



, on coral islands, 64. 



, on formation of mould, 83. 



, on shivering of rocks in Chili by 



earthquakes, 83. 



, on transportation of rocks by ice, 



87,88. 



, on slaty structure in refuse of 



gold mine, 142. 



, on structure of Andes, 284. 



, on recent strata near Lima, 171. 



, on origin of chalky mud in Pa- 

 cific, 186. 



, on drifting of stones in roots of 



trees, 187. 



, on stones attached to sea- weed, 



188. 



, on living saurian of the Galapa- 

 gos, 229. 



, on subsidence in Pacific, 233. 



De la Beche, Mr., on calcareous no- 

 dules in Lias, 53. 



-, on rocks altered by granite, 145. 



, on dirt-bed in Portland, 206, 207. 



, on saurians of the Lias, 228. 231. 



, on trap rocks of New Red sand- 

 stone, 278. 



, on metamorphic rocks, 296. 



Delta of Indus, recent changes in, 208. 



, the Niger, its size, 209, 210. 



Deluge, fossils attributed by some to, 17. 



Denmark, cretaceous coral reef in, 188. 



Denudation defined, 79. 



, its great amount, 80. 



, valleys of, 80. 



, on a great scale in Ross-shire, 81. 



, proofs of, from levelled surface of 



districts where great faults occur, 81. 



, connexion of alluvial formations, 



and, 82. 



, proofs of from trap-dikes, 115. 



Deshayes, M., his identifications of re- 

 cent and fossil shells, 165, 166, 167. 

 177. 



Deoxydation of mineral waters by or- 

 ganic matter, 58. 



Devonshire, trap rocks of, 278. 



Diagonal stratification explained, 31. 



Diallage, 102. 



Diallage rocks, 100. 



Diceras arietina, 219. 



Diceras limestone, 219. 



Didelphys, fossil, 222. 



Dikes, volcanic, described, 19. 103. 



, more crystalline in the centre, 105. 



, fragments of subjacent rocks in, 



106. 



, changes caused by, 19.21. 104. 107. 



, granitic, 125. 



Diluvium, ancient alluviums called, 85. 



Dimyary mollusca, 44. 



Dionte and dioritic porphyry, 100. 



Dip, term explained, 69. 



, how to measure, 70. 



, reversed, how caused, 73. 



Dirt-bed in isle of Portland, 205. 

 Dolerite described, 96. 100. 

 Dolomite described, 28. 

 Dolomitic conglomerate, fossils of, 240, 

 Domite, 100. 



Drift-wood of American rivers, 260. 

 Dudley, altered coal shales of, 145. 

 Dufrenoy, M., on rocks altered by gra- 

 nite, 145. 



Earth's crust, term explained, 14. 

 , composed of distinct substances, 



13. 



, its successive formation, 13. 



, arrangement of its materials, 14. 



, not increasing in thickness, 157. 



Echini from the Chalk, parasitic fossils 



on, 37. 



Edinburgh coal-field, fossils of, 245, 246. 

 Ehrenberg, Professor, on infusoria, 39. 



41, 42. 



Eifel, volcanic rocks of the, 276. 

 Elbeuf, needles and grooved pillars of 



chalk at, 194. 



Elevation of land, gradual, proofs of, 62. 

 Encrinites fossil in Oolite, 216, 217. 

 Endosiphonites carinatus, 270. 

 England, tertiary strata of, 172. 180. 

 Enstone, fossil bone from, 222. 

 Eocene, term whence derived, 166. 



strata, in England, 178. 



volcanic rocks, 276. 



Epidote, 102. 



Equisetacece, 237. 247. 250. 255. 



Erratic blocks, distribution of, 86. 



, transported by ice, 86. 



Escarpments of oolites, &c., 234. 



Esckara dislicJia, 185. 



Estuary deposits, 16. 



Etna, lavas, tuffs, and dikes of, 273. 276. 



Eunomia radiata, 215. 



Euphorbiacece, 252. 



Euphotide, 100. 



Eurite and euritic porphyry described, 



122.134. 

 Exogyra butta, 201. 



Falconer, Dr., on fossil monkey, 180. 

 False stratification explained, 32. 

 Fascicularia aurantium, 176. 

 Faults described, 75. 

 cause apparent alternations of 



strata, 77. 



, great amount of some, 78. 82. 



, origin of, 77, 78. 



, grooved surfaces of, 78. 



, denudation proved by, 81, 82. 



Faxoe limestone and its fossils, 188. 



Felspar, varieties of, 92. 102. 



, its decomposition affords silex in 



solution, 59. 

 Felspar-porphyry, 100. 

 Findheim.land shells in limestone of, 43. 

 Fish killed by submarine eruptions, 



floods, &c., 231. 

 Fissures, polished surfaces of, 75. 78. 



