INDEX. Cr-Dr 



535 



Crystalline limestone, 377. 



in Scotland, 389. 



Crystals on sand, 94. 

 Cuchullin Hills of Skye, 320. 

 Cumberland haematite, 428. 

 Cumbrian Mountains, dykes of, 335. 

 Cuvier on revolutions of the globe, 75. 

 Cwm, Arthur, 149. 

 Cyathocrinus, figure of, 486. 

 Cypridea, figure of, 494. 

 Cyprina, history of, 465. 

 Cyrena, figure of, 441. 

 Cystiphyllum, figure of, 481. 

 Cystoidea, 487. 



DACITE, 39, 263. 

 Didmahoy, dolerite of, 306. 

 Dames, W., on archaeopteryx, 519. 

 Dana, 22. 



on Crustacea, 491. 



on life of corals, 114. 



on veinstones, 250. 



on volcanoes without cones, 188. 



Dartmoor, 50. 



granite, 230. 



Darwin, 31, 33. 



on classification of coral reefs, 114. 



on crystals in Galapagos lava, 209. 



on earthquakes, 322. 

 on gypsum, 105. 



on growth of reefs, 107. 



on oolite now forming, 48. 



on origin of species, 438. 



on plains in the Andes, 133. 



on South American Coast, 50. 



on water-formed rocks, 45. 

 Daubeny, 2. 



on earthquakes, 321. 



volcanic hypothesis, 201. 

 Daubree on zeolites, 29. 

 on origin of ores, 399. 



on origin of tin, 419. 



on travelled sand, 93. 



on veinstones, 250. 



on water as affecting volcanic rocks, 



177. 



Davidson on fossil brachiopoda, 496. 



J )avy, volcanic hypothesis, 201. 



Debey on flora of Aix-la-Chapelle, 473. 



Dechen (Von), on granite veins at Mouse- 

 hole, 250. 



on metalliferous veins, 411. 

 Decline of volcanic activity, 191. 

 Decomposition of granite, 217. 

 Deer, evolution of, 522. 

 Definition of geology, 1. 



De la Beche on identification of strata, 



450. 



on schists of South Devon, 381. 



on a Trias volcano, 313. 



Delaunay, 11. 



Deltas, 163. 



Demoid types, 437. 



Denbigh grit, 95. 



Density of the earth, 9. 



Denudation of carboniferous limestone, 



147. 



Denudation of Culver Cliff, 47. 



of volcanic regions, 198. 



Deposition simulating upheaval, 331.' 



Depth at which volcanoes originate, 178. 



Derbyshire, carboniferous limestone do- 

 lomite, 109. 



Dermatochelyidse, 512. 



Desaguardero, table-land of, 132. 



Descending streams, 153. 



Deslongchamps, E. E., on teleosauria, 

 513. 



Destruction of marine animals, 444. 



Dettingen, basalts of, 280. 



Devonian grits, 95. 



limestones, 109. 



slates, 100. 



volcanoes of Cornwall, 300. 



Devonshire, iron of, 427. 



Diabase, 40. 



A. Geikie on, 309. 



Diallage, 25. 



rock, relation of serpentine to, 28S. 



Diameter of the earth, 11. 



Dibranchiata, 501. 



Differences between dykes and veins, 

 399. 



Dinosauria, 515. 



Diorite, 40, 225. 



and propylite compared, 256. 



of the Lakes, 237. 



of the Virginia range, 226. 



of Warwickshire, 304. 



Dip, 63. 



Directions of veins, 408. 



Dislocation, proofs of, 330. 

 relative age of, 78. 



Disseminated veins, 404. 



Distinction of stratified and un stratified 

 rocks, 68. 



Distribution of basalt, 281. 



of British iron ores, 426. 



of dykes, 335. 



of earthquakes, 324. 



of elvans, 232. 



of gabbro, 227. 



of gneiss and mica schist, 379. 



of mollusca, 457. 



of plants, 468. 



of quartz augite andesite, 275. 



Disturbance of the strata, 330. 



Ditroite, 224. 



Devitrification, 254. 



D line, 16. 



Dolerite, 40. 

 of Kowley, 278. 



Doleritic rocks, 280. 



Dolichosauria, 512. 



Dollo on Iguanodon, 516. 



Dolomite, 21. 



Domite, 40. 



Donegal, granites of, 242. 



Downthrow, 77. 



Downton sandstone, 46. 



Drachenfels trachyte, 39. 



Drake (Sir F.), 12. 



Drew on Fans, 158. 



Droitwich, 21. 



