

778 



Coal-measures,dirt-bedsof,326. 



division of, 329. 



false, 309. 



section of, near Nesque- 

 honing, Pa., 403. 



section of, at Trevorton 

 Gap, Pa., 404. 



origin of, 359. 



vegetation, character of, 

 333. 

 Coal-period, summary of, 368. 

 Coal-plants, 359. 



distribution of genera of, 

 355. 



number of, 342. 



growth of, 363. 

 Coan, T., on eruptions on Ha- 

 waii, 697, 699. 

 Coast-barriers, 250, 662. 

 Coast-formations, 660. 

 Coast-outline of Atlantic, 441. 

 Cocconeis atmospherica, 631.* 



lineata, 631.* 

 Cocconema cornutum, 631.* 



Lunula, 631.* 

 Coccosteus, 279,g 298. 

 Coccoteuthis, 460.§ 

 Cochliodus, 278.§ 



contortus, 315,* 319. 



nobilis, 314* 

 Coecilians, 344.§ 

 Coelacanthus elegans, 350. 

 Cohesive attraction, 625. 

 Coins, fossil, 580, 581* 

 Coleopters, 420.§ 

 Colorado, Canons of, 569, 638. 



Upper, Cretaceous in, 469. 



Upper, Jurassic in, 445. 



Upper, Triassic in, 417. 

 Colors, original, on fossil 



shells, 264, 319. 

 Colossochelys Atlas, 526. 

 Columnaria, 212.§ 



alveolata, 209,* 211. 

 Columnar surfaces in Niagara 

 group, 239. 



in Onondaga salt group, 

 247. 

 Comanche Peak group, 470. 

 Comatula, 161.g 458. 

 Comprehensive types, 203, 595. 



types becoming extinct, 

 397. 



types, examples of, 395, 

 397, 500, 754. 

 Compsemys, Eocene, 517.$ 

 Concbifers, 157.§ 



first of, 191. 



range of, in time, 401. 



siphonated, 397. 

 Concretionary structure, 96.§ 

 Concretions, origin of, 626. 

 Cones, fossil, 335. 

 Conferva;, 333.§ 

 Conglomerates, 70, 73,? 377. 

 Conifer, earliest in Britain,295. 

 Conifers, 418.? 



of Tertiary, 514. 



pith of, 337. 



structure of, 166.§ 

 Coniston group, 260. 

 Connecticut, Carboniferous in, 

 409. 



INDEX. 



Connecticut, Devonian in, 409. 

 trap dikes of, 20,* 430. 

 Triassic in, 416. 

 River valley, submarine 



continuation of, 544. 

 valley, terraces in, 557. 

 valley trap dikes, origin 

 of, 703. 

 Conocardium, 397. 



Blumenbachii, 191. 

 dipterum, 216 * 

 immaturum, 213. 

 trigonale, 275. 

 Conocephalus minutus, 188.* 

 Conrad, on Tertiary shells, 517, 



521. 

 Consolidation of strata, 409. 



causes of, 704. 

 Continent, definition of, 29.§ 

 erosion over, when near 



the ocean's level, 665. 

 of progress, the Orient the, 

 585. 

 Continents and oceans, early 

 outlined, 732. 

 arrangement of, 11, 13. 

 distinctive animal types 



of, 585. 

 mean heights of, 15. 

 submerged borders of, 12. 

 system in reliefs of, 23. 

 Contraction, change of level 

 from, 718. 

 effects of, in a cooling 

 sphere, 718. 

 Conularia, 215,2 496 -§ 

 gracilis, 215.* 

 last of, 455. 

 Conus adversarius, 522. 



tortilis, 517. 

 Cook, G. H., on New Jersey 

 Cretaceous, 469. 

 on elevation of U. S. coast, 

 587. 

 Copper, boulders of, 536. 



of Lake Superior, 195. 

 Copper-glance, 64.§ 



ore in the Oneida, 230. 

 Coprolites, 66.§ 



analyses of, 67. 

 in Triassic, 428, 438. 

 Saurian, 457.* 

 Corallian group, 449. 

 Corallines, 67, 147.§ 

 Coralline Crag, 523. 

 limestone, 238, 242. 

 limestone, fossils of, 242. 

 Corallium nobile, 67. 

 Corals, range of, in time, 400. 



rate of growth of, 752. 

 Coral islands, chalk on, 488,753. 

 islands, evidence from, of 

 change of level in the 

 Pacific, 587. 

 islands, gypsum on, 443. 

 limestone, 85,§ 617. 

 rag, 448.? 



reef, ancient, 239, 270, 272. 

 reefs and islands, forma- 

 tion of, 614. 

 reefs of Florida, 752. 

 reefs, rate of increase of, 

 591. 





Coral reef seas, isothermal line 

 limiting, 42. 



rocks, 85, 617. 



rock, oolitic, at Key "West, 

 201, 752. 

 Corbicula intermedia, 517.* 

 Corbula bicarinata, 517. 



gibbosa, 517. 



mactriformis, 517.* 

 Cordaites, 356. 



angustifolia, 283. 



borassifolia, 342. 



Robbii, 290. 

 Cornbrash, 448.§ 

 Corniferous limestone, 269. 

 Corsica range, elevation of, 533. 

 Coiwphodon, 529.g 

 Coscinodiscus, 630.* 



apiculatus, 512.* 



gigas, 512.* 

 Cosmogony, 741. 

 Cotopaxi, 686* 

 Crania, 184,g* 399. 



divaricata, 216.* 

 Crassatella alta, 517.* 



Mississippiensis, 518. 

 Craters, 685.§* 



See, further, Volcanoes. 

 Creations since that of Man 



unknown, 586. 

 Crematopteris, 355. 

 Crepidula costata, 521.* 

 Cretaceous beds, equivalency 

 of American and Euro- 

 pean, 480. 



formation, thickness of, 

 504. 



N. American, map of, 489. 



period, 467.§ 



species, distribution of,487. 

 Cricodus, 279.* 

 Crinideans, 161 .g 



number in L. Silurian, 212. 



range of, in time, 400. 

 Crinoidal epoch, 310. 

 Crinoids, 159, 161.§ 



range of, in time, 494. 

 Crioceras, 472.g 



Duvalii, 485* 

 Cristellaria rotulata, 474. 

 Crocodiles, first of, 473. 



first European, 483. 



Tertiai-y, 526. 

 Crocodilians, 346.g 

 Crocodilus, 498. 



basifissus, 478. 



basitruncatus, 478. 



clavirostris, 478.* 



macrorhynchus, 519. 



range of in time, 572. 

 Crotalocrinus rugosus, 263.* 

 Crustaceans, 153.g 



range of, in time, 401. 



rank of earliest, 396. 

 Crustacean tracks of Triassic, 

 427* 



tracks of Potsdam, 185. 

 Cryptoceras, 214. 



undatnm, 214.* 

 Cryptogams, 165.§ 



existing, 333. 

 Crystalline rocks, formation 

 of, 706. 



