49G 



INDEX. 



De la Beche, Sir Henry, procures 

 the formation of the Museum of 

 Economic Geology, 68; his Manual, 

 69 ; his Geological Chart, 70. 



Delphinus, 317. 



Deltas, 136, 351. 



Deluge, the, fossil shells considered 

 an evidence pf, by the Fathers, 

 22. 



Degrading and elevating causes, 136. 



Denudation of the Chalk, 393 ; the 

 Wealden, 407. 



valleys of (illustration), 

 154. 



Deposits, arrangement of, 113, 146 ; 

 fossiliferous, 1 14 ; in Great Britain, 

 1 19, 124 ; similarity of contiguous, 

 132 ; arenaceous and argillaceous, 

 134. 



Devonian group, the, 451 ; subdi- 

 visions, 451 ; fossil fishes, 454. 



Diacosaurus, 300. 



Didelphis, 316. 



Didelphous mammalia, 314, 315. 



Dicotyles, 226. 



Digitigrade carnivora, 338. 



Diluvial caves containing human 

 remains, 341. 



Dinornis, 310. 



Diodon, 279. 



Diodontidae, 279. 



Dinotherium (illustration), 318. 



Dip (illustration), 147. 



qua-qua-versal, 148. 



Diptera, 266. 



Dipteridse, 282. 



Dipterus, 282. 



Dirt-bed of Portland, forest of the, 

 397 ; upper series, 398 ; middle 

 series, 399 ; lower series, 399. 



Disjointed strata (illustration), 140. 



Disturbance of strata (illustrations), 

 139, 141. 



Dodo, 312. 



Dogs, fossil, 338. 



Dolphins, fossil, 317. 



Donati establishes the generic distri- 

 bution of fossils, 33. 



Dorsetshire, landslip in, 347. 



Dremotherium, 32 1 . 



Drift, how classified, 133; groups in 



England, 134. 

 theory of the coal formations, 



438. 



Drobua, 264. 

 Dromidse, 265. 

 Durocher on the mode of transport 



of erratic blocks, 43. 

 Dusa, 264. 

 Dysplanus, 262. 



E. 



EAGLES, fossil, 309. 



Earth, various opinions on the origin 

 of the, 55 ; internal heat, 57 ; the 

 Earth's Crust (Erdrinde), 58 ; 

 order and succession of rocks, 58 ; 

 tropical climate of the ancient, 

 59 ; its changes, 60 ; Arctic cli- 

 mate, 61 ; extinction of various 

 genera of animals, 62 ; existing 

 causes of change, 62. 



Earthquakes, effect of, 36, 365. 



Echinida, 225. 



Echinites, superstitions regarding, 

 in the middle ages, 24. 



Echinodermata, the true type of the 

 Radiata, 224 ; abundant in the 

 chalk, 384. 



Echinostachys, 196. 



Echinus, 384. 



Economic Geology, Museum of, 68. 



Edentata, 332. 



Elasmotherium, 32G. 



Elateridaj, 269. 



Elder, 264. 



Electricity applied to produce crys- 

 tals, 130. 



Elementary substances, general 

 qualities of, 80. 



Elevating causes, 136. 



Elevation, valleys of (illustration), 

 154. 



of the land in various 

 countries, proved, 363, 364. 



Elephants, fossil, 329; teeth of (illus- 

 tration), 331. 



Elephas, 329, 331. 



africanusj tooth of (figure), 

 331. 



