780 



INDEX. 



Disturbances after the Palaso- 

 zoic, 403. 



preceding the Carbonife- 

 rous, 320. 



after the Mesozoic, 502. 



after tbe Tertiary, 530,533. 



in the age of Man, 586. 

 Diversity of rocks in different 



regions, 377. 

 Dodo, 578.* 

 Dolerite, 89.g 

 Dolomite, 03,$ 85.$ 

 Domite, 88.g 



D'Orbigny's subdivisions of 

 Jurassic, 448. 



subdivisions of Cretace- 

 ous, 480. 

 D'Orbigny on thickness of Me- 

 sozoic, 493. 

 Dorcatherium, U. Missouri, 



519.§ 

 Dorsibranchiates, 154.$ 

 Drepanodon, U. Missouri, 519. 

 Drift, 535.§ 



in Arkansas, 752. 



in Europe, 540. 



in Missouri, 751. 



in North America, 536. 



in South America, 540. 



modified, 536, 549. 



origin of, 541. 



See, further, Glacial and 

 Gxacier. 

 Drift-sand hills, 628. 

 Dromatherium sylvestre, 426, 



429* 

 Dryopithecus, 529.$ 

 Dudley limestone, 260. 

 Dugong, 423.$ 



Eocene, 529. 

 Dunes, 629.$ 

 Dust-showers, 629. 

 Dyas. See Permian. 

 Dyestone group, 384. 

 Dynamical Geology, S.$ 603. 



agencies intensified in 

 the Post-tertiary, 570. 

 Dysaster, 160.$ 



canaliculatus, 464. 



ovalis, 465. 



ringens, 464. 

 Dysyntribite, S2.g 



Eagre, 653.$ 



Earth, relation of, to the uni- 

 verse, 3. 

 form of, and arrangement 



of land of, 10. 

 increase in mass of, above 



the water's level, after 



the Mesozoic, 569. 

 evolution of features of, 



731. 

 system in reliefs of, 23. 

 system in tbe courses of 



feature-lines of, 30, 731. 

 Earth's crust, effects on, of 



contraction, 718. 

 development, examples of 



law of, in geological 



history, 759. 

 Earthquake oceanic waves, 



655, 729. 



Earthquakes, nature and ori- 

 gin of, 728. 



evidence from, of the 

 earth's internal liquid- 

 ity, 684. 

 East Indies, trends of islands 



in, 37. 

 Eatonia singularis, 254,* 255. 

 Ebb-and-flow structure, 93.§ 

 Ecculiomphalus Canadensis, 

 192. 



intortus, 192. 

 Echidnas, 424.$ 

 Echinoderms, 158,$ 159. 



range of, in time, 400. 

 Echinoids, 159.$ 

 Echinoneus, 160.$ 

 Echinorhinus, California, 521. 

 Echinostachys cylindrica, 434. 



oblonga, 434. 

 Echinus, 148.* 



granulatus, 552. 

 Eclogite, 80.$ 

 Edentates, 423.$ 



characteristic of Post-ter- 

 tiary, of South America, 

 565. 



earliest of, 528. 



range of, in time, 572. 

 Ehrenberg, on Diatoms of 

 Richmond, 512. 



on dust-showers, 629.* 



on green-sand, 749. 



on Polycystines, 612, 749. 

 Eifel, Devonian in, 295. 

 Elasacrinus, 274. 

 Elephant family, range of, in 



time, 572. 

 Elephas Americanus, 56.* 



primigenius, 560, 577. 



Miocene species of, 529. 



of U. Missouri, 522. 

 Elevations, causes of, 716. 



of Pacific islands, 587. 



Tertiary, in Europe, 533. 



See Heights. 

 Elotherium in U. Missouri, 



521.$ 

 Emmons, E., on the Triassic in 

 N. Carolina, 417, 426, 

 429. 



sections of Azoic by, 141. 

 Emys, Eocene, 517.$ 

 Enaliosaurs, 346.$ 



Carboniferous, 351. 



Jurassic, 451. 



range of, in time, 402, 572. 

 Encrinal limestone, 252, 281. 

 Encrinites, 161.$ 

 Encrinurus levis, 262. 

 Encrinus liliiformis, 148,* 



435,* 438. 

 Endoceras, 214.$ 



longissimum, 215. 



proteiforme, 214.$ 

 Endogens, 167.$ 

 Endopachys Maclurii, 517. 

 England, Carboniferous in, 

 352. 



Cretaceous in, 479. 



Devonian in, 294. 



disturbances in, 412. 



Jurassic in, 446. 



England, Post-tertiary, life of, 

 560. 



Permian in, 372. 



Subcarboniferous in, 318. 



Tertiary in, 522. 



Triassic in, 433. 



geological map of, 354. 

 Entomostracans, 153.$ 



range of, in time, 401. 

 Entomozooids, 749.$ 

 Eocene, 506.$ 522, 524. 



of Europe, climate of, 534. 



of N. America, climate of, 

 534. 



plants of, in Europe, 525, 

 534. 



See, further, Tertiary. 

 Eocidaris, 374. 

 Eolian limestone, 391, 392. 

 Eopithecus, 529.$ 

 Eosaurus Acadianus, 352.* 

 Eospongia Eoemeri, 209. 



varians, 209. 

 Ephemera, 420.$ 

 Epiaster elegans, 478. 

 Epidote, 57.$ 



Epiornis. See iEpiORNls. 

 Epochs, origin of, 737. 

 Equisetum, 166,$ 334. 



columnare, 420. 

 Equus, 529. 



in Missouri Pliocene, 522. 

 Ericulus, 463. 

 Erinaceus, 529.$ 

 Erosion by action of rivers, 

 635. 



by oceanic movements, 

 655. 



by drift sands, 631. 



extent of, over continents, 

 679. . 



increase of, in the Post- 

 tertiary, 570. 



in New England, 679. 



over continents, when 

 near the ocean's level, 

 665. 



topographical effects of, 

 680. 



of the channel of Niagara, 

 590. 



of the channel of the Co- 

 lorado, 591, 638.* 

 Eruptions, volcanic, 694, 696. 

 Eryon arctiformis, 461.* 

 Eschara, 158* 

 Esopus millstones, 230. 

 Estheria Keuperiana, 438. 



minuta, 436,* 438. 



ovalis, 426* 



ovata, 426 * 



parva, 426* 

 Ettingshausen, climate of Eu- 

 rope in the Tertiary, 534. 

 Eucalyptocrinus decorus, 261. 

 Eucyrtidium Mongolfieri, 749. 

 Eugnathus, 427. 

 Eumys, in U. Missouri, 521.$ 

 Eunotia amphioxys, 631.* 



Argus, 631* 



gibba, 631 .* 



gibberula, 631.* 



granulata, 631.* 



