INDEX. 
623 
COAL. 
Coal Period, climate of the, 430. 
-field of Virginia, 382. 
-measures of Nova Scotia, 408. 
—— measures, thickness of, in Wales, 397. 
-pipes, danger of, 399. 
-, rainprints in, 416. 
-seams, uniting of, 400. 
Coalbrook-Dale, faults in, 88. 
Cochliodus contortus, 437. 
Cockfield Fell rocks, altered by dikes, 516. 
Coelacanthus gramilatus, Permian, 390. 
Coleoptera of CEningen beds, 223. 
Collyrites ringens, Inf. Oolite, 351. 
Columnar structure of volcanic rocks, 
510. 
-basalt in the Vicentin, 511. 
Compact feldspar, 501. 
Concretionary structure, 63. 
Cone of Tartaret, 527, 542. 
-of Come, 28. 
Cones and craters described, 495. 
-, absence of, in England, 30. 
Conformable stratification, 39. 
Conglomerate or pudding-stone, 36. 
-, Dolomitic, of Bristol, 373. 
Coniferse of the coal-measures, 427. 
Connecticut Valley, New Bed Sandstone 
of, 381. 
Conocephalus striatus, 488. 
Conocoryphe striata^ 488. 
Conrad, Mr., on age of American creta¬ 
ceous rocks, 307. 
Consolidation of strata, 61. 
Continents and oceans, permanence of, 
117. 
Contorted strata, in drift, 178. 
Conularia ornata, Devonian, 453. 
Conulus priscus, Coal, 415. 
Conus deperditus, Bracklesham, 262. 
Conybeare and Phillips on ninety-fathom 
dike, 90. 
Conybeare, Mr., on reptiles of the Lias, 
860. 
Copper lode near Redruth, 607. 
Coprolite bed of Chloritic Series, 299. 
-beds of Red and Coralline crags, 197, 
198. 
Coprolites of fish from the chalky 298. 
Coral Rag, fossils of the, 339. 
Coralline or White Crag, 197. 
Corals of the Devonian, 451. 
-of the Mountain Limestone, 433. 
-, Neozoic type of 431. 
-, Palceozoic type of 431. 
Corhicella {Gyrena) fiuminalis, 54. 
Corbula pisum, Hempstead beds, 245. 
Corinth, corrosion of rocks by gases near, 
586. 
Cornbrash or Forest Marble, 341. 
Cornwall, granite veins in, 561, 582. 
-, lodes in, 615. 
-, mass of granite in, 552. 
-, vertical sections of veins in mine, 
607. 
Coseguina volcano, burying of organic re¬ 
mains by, 523. 
Crag, term defined, 192. 
-of Antwerp, 204. 
-, fauna of, its relation to that of pres¬ 
ent seas, 201. 
:-, Norwich, 193. 
-, Coralline or White, 197. 
BADOXYLON. 
Crag, Red, 194. 
-, tables of marine testacea in, 202. 
-deposits, climate of, 200. 
Crania attached to a sea-urchin, 49. 
- Parisiensis, White Chalk, 294. 
Crassatella sulcata. Barton, 259.. 
Craters and cones described, 495. 
-, Theory of Elevation, 496. 
Craven fault, 90. 
Creeps in coal-mines, 78. 
Cretaceous rocks of United States, 307. 
-Period, error as to continuity of, 288 
-, fiora of the Upper, 802. 
-volcanic rocks, 544. 
-plutonic rocks, 570. 
-Period, distinct mineral character of 
rocks in, 292. 
-rocks, classification of, 282. 
- strata, connection between Upper 
and Lower, 301. 
Crinoidea of Mountain Limestone, 433. 
Croatia, Lower Miocene beds of, 242. 
Croll, Mr., on amount of subaerial denuda¬ 
tion, 114. 
Cromer forest-bed, 191. 
Crop out, term explained, 83. 
Crossopterygidie, or fringe-finned fish, 443. 
Crowfoot, Mr., on shells of Aldeby beds, 
192. 
Crust of the earth defined, 26. 
Crustaceans of Old Red Sandstone, 446. 
Cryptodon angulatum, London Clay, 266. 
Crystalline Limestone, 579. 
-rocks defined, 32. 
-schists, much alkali in the, 587. 
-theory of cleavage, 591. 
Cup and Star corals, 431. 
Curved strata, 73-76. 
Cutch, salt-layers in the Runn of, 375. 
Cuvier, M., on fauna of the Paris basin, 
271. 
-, on Mammalia of Paris gypsum, 231. 
-, on Tertiary series, 141. 
Cyathocrinus caryocrinoides, 433. 
- planus, 433. 
Cyathophyllum ccespitosum, 451. 
Cyclopean isles, beds of tufi* and clay in, 
529. 
-, contorted strata in, 530. 
Cyclopteris Hihernica, Old Red, 441. 
Cyclostigma {Lepidodendron), Old Red, 441. 
Cyclostoma elega^is. Loess, 56. 
Cylindrites acutus. Great Oolite, 345. 
Cypress swamps of the Mississippi, 402. 
Cyprides in the Weald Clay, 315. 
Cypridina serrato-striata, 451. 
Cypris in fresh-water deposits, 57. 
- gibbosa, C. tuberculata, C. leguminella, 
324. 
- striato - punctata, C. fasciculata, C. 
granulata, 325. 
- Purbeckensis, Cypris punctata, 331. 
- spinigera. Weald Clay, 315. 
Cyrena (Corbicella) fiuminalis, 54. 
- cuneifoy'mis, Woolwich Clays, 268. 
- obovata, 54. 
- semistriata, Hempstead beds, 245. 
Cystidese of Silurian rocks, 466. 
Cythere infiata, coal-measures, 405. „ 
DADOXYLON, fragment of coniferous 
wood, 428. 
