INDEX. 



629 



PAGE 



Ephemera, larva 453 



Epicentrum, determination 130 



Equus 541 



Eras 281 



prehistoric 285 



Erosion, average 10, 275 



by glaciers 55 



by rain and rivers 10 



general . , 273 



glacial, some general results 573 



examples of great 12 



of continents, rate 10 



Erosive power of water, law of variation 11 



Eruption, modes of 208 



Eruption of volcanoes 89 



Eruptive rocks 206 



Eryon arctif ormis 434 



Barrovensis 434 



Estuaries 31 



deposits in , 32 



mode of formation 31 



Etna, volcano 88 



Eumicrotis Hawnii 411 



Euomphalus subqnadratus 395 



Euphoberia armigera 397 



EuproOps Dana? 396 



Eurypterids, Devonian 333 



Silurian 326 



Eurypterus remipes 325 



Evolution, general process 280 



in geologic history 280 



of coal plants 372 



of early reptiles 404 



of early birds 444 



of early mammals 448, 538 



of organic kingdom, illustrated by De- 

 vonian fishes 343 



the central idea in geology 405 



Ewing 129 



Exogyra Texana 479 



F 



Fagus ferrnginea 508 



polyclada 475 



Faults 228 



cause 232 



in coal-measures 349 



law of slip 231 



two kinds 231 



Fauna and flora, geological 195 



first distinct , 301 



Quaternary mammalian, in North Amer- 

 ica 581 



Quaternary mammalian, of England 581 



still changing 605 



Favosites hemispherica 331 



Favre 256, 473 



Faye 169 



Feldspar 7, 204 



Felis atrox 582 



Fenestella elegans „ 310 



Ferns, coal 362 



Ficus pyrif ormis 513 



PAGE 



Fingal's Cave 213 



Fiords, how formed 573 



Fire-clay 347 



Fire-damp 356 



Fisher 100, 264 



Fishes, age of 327 



Cretaceous 482 



Carboniferous 398 



Devonian 334-344 



Jurassic 436 



sudden appearance 344 



Tertiary 518 



Triassic 416 



Fissures 227 



cause 228 



Flabellina rugosa 471 



Flint-flakes from Miocene ,. 608 



Flint-veins in gneiss 5 



Flood-plain deposits 24, 557 



Florida reefs 156 



compared with other reefs 159 



formation 157 



history of changes 157 



Fluor-spar 236 



Flustra truncata 309 



Folding 174 



Fontaine 477 



Foraminif ers 161 



of chalk. 471 



shells of living 472 



Forties's theory of glaciers 61 



Forbesiocrinus Wortheni 392 



Fordilla Troyensis 299 



Forel 49 



Forest, fossil, ground plan of Carboniferous. 375 



fossil, Jurassic 425 



Formation, geological, definition 181, 196 



Formica lignitum 514 



Fossils, definition 189 



degrees of preservation 191 



— — distribution in strata 194 



increasing likeness to existing forms.. . . 196 



nature determined by age 195 



nature determined by country where 



found 195 



nature determined by kind of rock 194 



origin and distribution 190 



primordial, American 299 



primordial, foreign 300 



stratified rocks classified by means of . . 198 



Fouque 116 



Fractures 22? 



Free crinoid, living 311 



Frost, geological action 8 



Fusing-point, not the same for all depths in 



earth 86 



G 



Gabbro 204 



Gailenreuth Cave 576 



Galerites albogalerus 478 



Galesaurus planiceps 420 



Ganges, average erosion 11 



