INDEX. 



803 



Fresh-water action, 635, 756. 

 Friable rocks, 68. § 

 Frigid Zone, 41 § 

 Fringing reefs, 622. §* 

 Fritsch, life of Archaean, 159- 

 Frog, 121§,592, 599. 

 Frondicularia annularis, 131.* 

 Fruits, Carboniferous, 325* 326, 

 328,* 329, 330. 



Tertiary, 497,* 498. 

 Fuci, 135. § 



Fucoidal sandstone, 163. 

 Fucoids. 135,§ 169, 176, 177, 

 198* 223* 242, 255 * 257, 

 296. 

 Fucoides Cauda-galli. See Spi- 

 rophtton. 



duplex, 178. 

 Fucus, content of phosphoric 



acid, 61. 

 Fuller's-earth group, 435. 

 Fumaroles, 708. 

 Fungi, 133,§ 321, 331, 365, 366, 



608. 

 Fungia, 621. § 

 Fusulina. 131,* 307, 332. 



cylindrica, 131,* 308, 332,* 

 341, 350. 



gracilis, 341. 



robusta, 308, 341, 350. 

 Fusus, 508, 611. 



antiquus, 519. 



contrarius, 533. 



Labradorensis, 551. 



Newberryi, 477.* 



tornatus, 551. 



Gabb, W. M., California Creta- 

 ceous, 457, 458. 

 California Tertiary, 508. 510. 

 San Domingo Tertiary, 524. 



Gabbro, 71. § 



Gadus, 508. 



Galapagos Islands, 485. 

 temperature of, 41, § 42. 



Galastes, 448. 



Galathea, 350. 



Galena, 59.§ 



Galena limestone, 163, 196, 197, 

 377, 378. 



Galenite, 59,§ 197. 



Galeocerdo, 510. 

 latidens, 509, 510, 519. 



Galerites, 474. 

 albogalerus, 476. < 



conicus, 476. 



Galerus, 508. 



Gait limestone, 221. 



Gampsonyx fimbriatus, 350.* 



Ganges, sediment of, 648. 



Gangue, 113.§ 



Gannet, 503. 



Ganocephala, 338. § 



Ganoids, 262,§* 301, 336, 343, 



349, 371, 411, 427, 441, 450, 



462, 475, 484, 502, 516, 592, 



597. 



a comprehensive type, 382, 



597. 

 range of, in time, 388,* 589* 



Ganoid teeth, structure of, 

 264.* 



Gardeau shales, 276. 



Gardiner's River Springs, 692. 



Garnet, 57, §* 726, 727, 728. 



Garnet-euphotide, 71. § 



Garnet-felsyte, 71. § 



fiametiferous rocks, 64.5 



Gars, 278,§ 510, 592, 594, 595. 



Gas-wells, 268. 



Gaspe, Hamilton, at, 267. 



limestone, 221, 255, 256. 



Lower Helderberg at, 238. 



Niagara at, 221. 



Oriskany at, 256. 

 Gasteropods, 125,§ 189, 253,§ 

 342, 472, 482, 608. 



culmination of, 483, 598. 



dental apparatus of, 208, 

 257.* 



number of Silurian, 249. 



range of, in time, 387.* 

 Gastornis Parisiensis, 519. 

 Gastridium vetustum, 509. 

 Gastrocbsena, 608. 

 Gault, 470. 

 Gavialis Dixoni, 519. 



minor, 509. 

 Gay Head, Tertiary at, 495. 

 Gay-lussite, 630. 

 Geanticlinal, 740, § 751. 

 Geinitz, on Permian, 371, 373. 

 Gemellaria loricata, 127.* 

 Genera commencing in the 



Cretaceous, 483. 

 Genera commencing in the 

 Jurassic, 482. 

 modern, in Silurian, 253. 

 Genesee epoch, 254, 266. 



Falls, section at, 79* 219* 



shale, 257, 266. 

 Genesis, cosmogony of, 767. 

 Geodes, 222. § 



Geographical distribution of life, 

 principles in, 609. 



of oceanic species, as illus- 

 trated by the Physiographic 

 Chart, 43. 

 Geography, as a science, 2. 



Carboniferous, 354. 



Catskill, 281. 



Cenozoic, 586. 



Champlain, 551, 555. 



Chemung, 279. 



Corniferous, 265. 



Cretaceous, 478. 



Devonian, 286. 



Glacial, 539. 



Hamilton, 275. 



Jurassic, 450. 



Lower Helderberg, 240. 



Mesozoic, 481. 



Niagara, 230. 



Oriskany, 243. 



Paleozoic, 389. 



Permian, 368. 



Primordial, 180. 



Quaternary, 586. 



Recent, 560. 



Salina, 235. 



Subcarboniferous, 304. 



Tertiary, 520,* 586. 



Trenton, 208. 



Triassic, 422. 



Upper Silurian, 250. 

 Geological map of United States, 



144. 

 Geological record imperfect, 



60O.§ 

 Geology, methods of reasoning 

 in,4.§ 



does not explain Creation, 

 757. 



objects of, 2,§ 4. 



subdivisions of, 7.§ 

 Georgia, Archaean in, 150. 



Cretaceous in, 455. 



glaciers, 537. 



Georgia, in Cretaceous, 479. 



Tertiary in, 491. 

 Georgia (Vt.) shales, 163, 166. 

 Geosynclinal, 740, § 748, 750, 



751- 

 Geoteuthis Bollensis, 449. 

 Germany, Carboniferous in, 344, 

 346. 



Cretaceous in, 469. 



Devonian in, 282. 



Jurassic in, 433. 



Permian in, 369. 



Quaternary in, 532. 



Subcarboniferous in, 307. 



Triassic in, 424. 

 Geryon, 611. 

 Gervillia, 475. 



anceps, 475. 



crassa, 448. 



ensiformis, 456. 



inflata, 429. 



longa, 342. 



socialis, 426* 428, 429. 

 Gesner, A., on modern changes 



of level, 583. 

 Geysers, 719.§ 



action of, 721. 



siliceous deposits from, 612, 

 719. 

 Geyser-basins of Yellowstone 



National Park, 611, 719. 

 Giants' Causeway, 107, 716. 

 Gibraltar, currents at, 659. 

 Gieseckite, 156.§ 

 Gilbert, G. K., on Lake Erie 

 outlet, 540. 



Rocky Mountain Carbonifer- 

 ous, 296. 

 Gill, T., on Reptiles, 337. 

 Glabella, 123,§ 174.§* 

 Glacial Period, 527, 571, 756. 



Drift, supposed, in the Per- 

 mian, 370. 



era, second, 556, 561, 574. 



scratches, 535, 684. 



theory of the Drift, 535. 

 Glacier of Switzerland, reaching 

 to the Juras, 533. 



of Zermatt, 677.* 



regions, 675. 

 Glaciers, characters, origin, and 



• effects of, 675, 676,* 677.* 



conditions favoring increase 

 of, 678. 



increase of, in the Quater- 

 nary, 540. 



investigators of, 680. 



limit of, 679. 



motion of, 536. 



Quaternary in America, 537. 

 Glaphyroptera, 428. 

 Glaris, fishes at, 529. 

 Glass state, 702. 



volcanic, 708. § 

 Glauber salt, 630. 

 Glauconie grossiere, 512. 

 Glauconite, 58,§ 458,§ 759. § 



See Green-sand. 

 Gleditschia, 515. 

 Glen Roy, benches of, 555. § 

 Globigerina, 477, 611, 615. 



bulloides, 477- 



ooze, 611. 



rubra, 131.* 

 Globuliferous rocks, 63 § 

 Glossoceras, 228. 



desideratum, 250. 

 Glyphea dubia, 350. 



Liassina, 449. 



