782 



INDEX. 



Gault, 480. 



Gay Head, fossils of, 511. 

 Gayleureuth Cave, 559. 

 Genera commencing in the 



Cretaceous, 499. 

 Genera commencing in the Ju- 

 rassic, 499. 

 Genesee Falls, section at, 90, 

 231. 



shale, 280. 

 Geoclinal valleys, 722.§ 

 Geographical distribution of 

 life, principles in, 606. 



distribution of oceanic 

 species, as illustrated 

 by the Physiographic 

 Chart, 44. 

 Geography, American, in the 

 Carboniferous, 364. 



American, in the Catskill, 

 293. 



American, in the Cham- 

 plain epoch, 552. 



American, in the Che- 

 mung, 290. 



American, in the Cornife- 

 rous, 278. 



American, in the Creta- 

 ceous, 489. 



American, in the Devo- 

 nian, 299. 



American, in the Hamil- 

 ton. 286. 



American, in the Jurassic, 

 465. 



American, in the Lower 

 Helderberg, 255. 



American, in the Niagara, 

 243. 



American, in the Oris- 

 kany, 268. 



American, in the Per- 

 mian, 371. 



American, in the Pots- 

 dam, 196. 



American, in the Salina, 

 249. 



American, in the Subcar- 

 boniferous, 316. 



American, in the Tertiary, 

 530* 



American, in the Trenton 

 and Hudson periods, 

 222. 



American, in the Triassic, 

 440. 



American, through the 

 Palasozoic, 386. 



European, in the Creta- 

 ceous, 491. 



European, in the Devo- 

 nian, 301. 



European, in the Jurassic, 

 465. 



European, in the Tertiary, 

 533. 



of the Mesozoic, 493. 



of the Post-tertiary, 546. 

 Geology, objects of, 2,§ 4. 

 Georgia, Cretaceous in, 469. 



level of, near Milledge- 

 ville, 521. 



"Vt., rocks at, 175. 



Geosaur, 346.2, 462. 

 Geoteuthis, 454.2, 

 Germany, Carboniferous in, 

 352. 



Cretaceous in, 481. 



Devonian in, 295. 



Jurassic in. 447. 



Subcarboniferous in, 318. 



Triassic in, 433. 

 Geysers, 700.g 



siliceous deposits from, 

 708. 

 Giants' Causeway, 702. 

 Gieseckite, 61.2 

 Glabella, 188.g 

 Glacial epoch, 535.2, 



scratches, 538, 676, 751. 



theory of the Drift, 543. 

 Glacier of Mohawk Valley, 751. 



of Penobscot Bay, 545. 



of Switzerland, reaching 

 to the Juras, 545. 



of the Susquehanna, 751. 



of Zermatt, 670* 

 Glaciers, characters, origin, 

 and effects of, 667,* 

 751. 



increase of, in the Post- 

 tertiary, 570. 



of Connecticut River and 

 Hudson River valleys, 

 540, 544. 

 Glaris, fishes at, 529. 

 Glauconie grossiere. 523. 

 Glauconite, 470.§ 



See Green-sand. 

 Glen Roy, benches of, 558.§ 

 Globigerina rubra, 164.* 

 Glyphea dubia, 358. 

 Glyptocrinus, 191. 



decadactylus, 220.* 

 Glyptodon, 423.2, 



clavipes, 566* 

 Gneiss, 76,g 78,£ 81.g 

 Goeppert on number of plants 

 in the Palaeozoic ages, 

 295. 

 Gold-bearing veins, 715. 

 Gold quartz, age of, 413. 

 Gomphonema gracile, 631.* 

 Goniatites, 284.2, 303, 399. 



Marcellensis, 285* 



parvus, 349. 



politus, 349. 



punctatus, 285. 



retrorsus, 297.* 



uniangularis, 285. 



first of, 284. 



range of. in time, 401. 

 Gonioceras anceps, 214, 215. 

 Gorgonia, 163.$* 

 Gothland. See Scandinavia. 



Niagara in, 260. 

 Grammatophora oceanica, 

 512.* 



parallela, 631 * 

 Grammysia cingulata, 264.* 



Hamiltonensis, 284.* 

 Grammostomum phyllodes, 



164,* 474. 

 Granite, 75.g 76.g 

 Granulite, 76.§ 

 Graphic granite, 76.§* 



Graphite, 64.2, 



Graptolites, character and re- 

 lations of, 162,2, 190.2 

 last of, 235* 



range of, in time, 398, 400. 

 Graptolithus amplexicaulis, 

 212* 

 Clintonensis, 236 * 

 Hallianus, 186* 

 Logani, 190* 

 pristis, 191,* 220. 

 Grasshopper, 420.2 

 Gravel. 74.2, 

 Gray band, 232. 

 Great Britain. See England. 

 Greenland, glaciers of, 668. 

 recent change of level in, 

 587. 

 Green Mts., an island in the 

 Oriskany period, 268. 

 in the Palaeozoic, 388. 

 Green-sand, composition of, 

 470. 

 connection of formation 

 of, with Rhizopods, 749. 

 Cretaceous, 468, 470, 480. 

 L. Silurian, 174, 176, 216. 

 Rhizopods in, 201^ 216. 

 Greenstone, 78.§ 

 Gres bigarre, 433. 



de Fontainebleau, 523. 

 des Vosges, 412. 

 Grindstone grit, 73.2 

 Grit, 73.2, 



Groovings. See Scratches. 

 Gryllacris, 358.2, 

 Gryphaaa arcuata, 449, 453,* 

 464. 

 Cymbium, 453, 464. 

 dilatata, 459,* 465. 

 lateralis, 479, 487. 

 Pitched, 474,* 478. 

 vesicularis, 474,* 479, 487, 



488. 

 Vomer, 479. 

 first of, 450. 

 last of, 472. 

 Gryphite limestone, 449. 

 Guadaloupe, skeletons of, 580, 



581.* 

 Guano, 66.2, 



Guelph formation, or Gait, 246. 

 Gulf border region, 413. 

 Gulf of Mexico in the Creta- 

 ceous, 490* 

 of Mexico in the Tertiary, 



530.* 

 of Mexico in the Permian 

 Period, 371. 

 Gulf Stream, 41, 651, 658. 

 Guyot, A., on Africa, 28. 

 on Cosmogony, 742. 

 on the Great Swiss Glacier, 



545, 752. 

 on the Post-tertiary of 

 Switzerland, 577. 

 Gymnosperms, 166.2, 

 divisions of, 418. 

 Gypseous group of Montmar- 



tre, 523. 

 Gypsum, 63.g* 85.g 



mode of formation of, 248, 

 443. 



