702 



INDEX 



Eocene epoch — (Continued) 



physical geography of, 574-577. 

 Eocetus, 596. 



Eocystites longidactylus, 415. 

 Eohippus, 608-609. 

 Eolian sandstone, 52. 

 Eolithic man, 675-676. 

 Eoliths, 622, 675. 

 Eosiren, 597. 

 Eotitanops, 604. 

 Epicontinental seas, 405. 

 Equisetales, 495. 

 Equus, 610. 

 Equus giganteus, 672. 



tau, 672. 

 Erosion, by continental glaciers, 182- 

 184. 



by glaciers, 157-159. 



by shore ice, 203-204. 



by streams, 83-89. 



by waves, 202. 



of volcanic cones, 3 14-3 16. 



rate of, by streams, 88. 

 Erratics, 156. 

 Eryon propinquus, 532. 

 Eryops, 486, 487. 

 Escharopora subrecta, 432. 

 Eskers, 180. 

 Eucalyptocrinus crassus, 446. 



el rod i, 446. 

 Eumetria marcyi, 482. 

 Eumicrotis curta, 527. 

 Euparkeia, 560. 

 Eurypterids, 436, 449, 460. 

 Eutheria, 590, 591. 



Evolutional geology, definition of, 22. 

 Exfoliation, 32, 328. 

 Exogyra, 526. 

 Expansion and contraction theory of 



glacial movement, 190. 

 Extrusion of lava, 334-339. 



Fall Line, 92, 224. 

 Falls, 89-95. 



from hanging valleys, 163. 



not the result of erosion, 93. 



of the Ohio, corals at, 456. 

 Falls Creek, travertine dams of, 65. 

 Fan folds, 255. 

 Fault, breccia, 268. 



line, 269. 



rift, 277, 278, 281, 282, 289, 290. 



Fault — (Continued) 



scarps, 265, 266. 



surface, 262. 

 Faulted mountains, 354. 

 Faulting and the direction of streams, 



102. 

 Faults, 261-269. 



definition of, 25. 



detection of, 268. 



influence on topography, 265-268. 



origin of, 269. 

 Faults and fissures, caused by earthquakes 



287, 288. 

 Faults and folds, 359. 

 Favosites, 444, 456. 

 Felsites, 331. 

 Felsitic rocks, 329. 

 Fens of Lincolnshire, marine deposition 



on, 224. 

 Ferns, Carboniferous, 492. 



Mesozoic, 566. 

 Fingal's Cave, StafFa, 209. 

 Fiords, 166, 228. 

 Fire clay, 499. 

 Fisher, E. H., 129. 

 Fishes, Carboniferous, 485. 



comparison of Devonian and modern, 

 466. 



Devonian, 461-467. 



Mesozoic, 533-536. 



Ordovician, 436. 



Silurian, 450. 



Tertiary, 625-626. 

 Fissure eruptions, 310-311. 

 Fissures, caused by earthquakes, 287. 

 Fistulipora micropora, 458. 

 Flint nodules, 77, 524. 

 Flood plains, 119-121, 128. 

 Florissant beds, 580, 629, 634. 

 Flow of rocks, 258. 

 Fluorite, 688. 

 Flying reptiles, 558-560. 

 Folded mountains, 356-358. 



origin of, 358-362. 



topographic features of, 362-363. 

 Folded regions, coasts of, 227. 

 Folds, 254-257. 



and faults, 359. 



origin of, 257. 

 Foliation, 345. 

 Foot wall, 262. 

 Foraminifera, Carboniferous, 482. 



Mesozoic, 524. 



