784 



INDEX. 



Geographical distribution of 

 oceanic species, as illus- 

 trated by the Physio- 

 graphic 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,* 568. 



American, in the Trenton 

 and Hudson periods, 

 222. 



American, in the Triassic, 

 440. 



American, through the 

 Palaeozoic, 386. 



European, in the Creta- 

 ceous, 491. 



European, in the Devo- 

 nian, 301. 



European, in the Juras- 

 sic, 465. 



European, in the Tertiary, 

 533. 



of the Mesozoic, 493. 



of the Post-tertiary, 546. 

 Geology, objects of, 2,g 4. 

 Georgia, Cretaceous in, 469. 



level of, near Milledge- 

 ville, 31. 



Vt., rocks at, 175. 

 Geosaur, 346,§ 462. 

 Geoteuthis, 454,g 464. 

 Germany, Carboniferous in, 

 352. 



Cretaceous in, 481. 



Devoniau in, 295. 



Jurassic in, 447. 



Subcarboniferous in, 318. 



Triassic in, 433. 

 Geysers, 700.§ 



siliceous deposits from, 

 708. 

 Giants' Causeway, 702. 

 Gieseckite, 61.g 



Glabella, 1S8.§ 

 Glacial epoch, 535.g 



scratches, 538, 676, 753. 

 theory of the Drift, 543. 

 Glacier of Mohawk Valley, 753. 

 of Penobscot Bay, 545. 

 of Switzerland, reaching 



to the Juras, 545. 

 of the Susquehanna, 753. 

 of Zermatt, 670* 

 Glaciers, characters, origin, 

 and effects of, 667,* 

 753. 

 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.§ 



clavipes, 566.* 

 Gneiss, 76,§ 78,§ 81.§ 

 Goeppert on number of plants 

 in the Palaeozoic ages, 

 295. 

 Gold-bearing veins, 715. 

 Gold-quartz, age of, 413. 

 Gomphonema gracile, 631.* 

 Goniatites, 284,§ 303, 399. 

 Marcellensis, 285.* 

 parvus, 349. 

 politus, 349. 

 punetatus, 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 marina, 166, 



512* 

 .Grammysia cingulata, 264.* 



Hamiltonensis, 284.* 

 Grammostomum phyllodes, 



164,* 474. 

 Granite, 75,g 76.§ 

 Granulite, 76.§ 

 Graphic granite, 76.g 

 Graphite, 64.§ 



Graptolites, character and re- 

 lations of, 162,£ 190.g 

 last of, 235* 



range of, in time, 398, 400 

 Graptolithus amplexicaulis, 

 212* 

 Clintonensis, 236* 

 Hallianus, 186.* 

 Logani, 190.* 

 pristis, 191,* 220. 

 Grasshopper, 420.$ 

 Gravel, 74.§ 

 Gray band, 232. 

 Great Britain. See England. 

 Greenland, glaciers of, 668. 



Greenland, recent changes of 



level in, 587. 

 Green Mts., an island in the 

 Oriskany period, 268. 

 in the Palasozoic, 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.g 

 Gres bigarre, 433 . 



de Fontainebleau, 523. 

 des Vosges, 412. 

 Grindstone grit, 73.2 

 Grit, 73^ 



Groovings. See Scratches. 

 Gryllacris, 358.g 

 Gryphsea 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.g 



Guelph formation, or Gait, 246. 

 Gulf border region, 413. 

 Gulf of Mexico in the Creta- 

 ceous, 490* 

 of Mexico in the Ter- 

 tiary, 530* 

 of Mexico in the Permian 

 Period, 371. 

 Gulf Stream, 41, 200, 651, 658. 

 Guyot, A., on Africa, 28. 

 on Cosmogony, 742. 

 on the Great Swiss Gla- 

 cier, 545, 752. 

 on the Post-tertiary of 

 Switzerland, 577. 

 Gymnosperms, 166.$ 

 divisions of, 418. 

 Gypseous group of Montmar- 



tre, 523. 

 Gypsum, 63,g* 85.§ 



mode of formation of, 248, 



443. 

 formed on coral islands, 

 443. 

 GyrocerasBurlingtonensis,314. 

 Gyrodus umbilicus, 279.* 



Hadrosaurus Poulkii,473. 

 Hague, A ., on effects of oceanic 

 currents, 661* 

 on formation of gypsum 

 on a coral island, 443. 

 Halicalyptra fimbriata, 749.* 

 Halicore, 423.§ 

 Halitherium, 529.§ 

 Hall, J., on the commencement 

 of the Devonian, 268. 

 on Conularia, 496. 

 on rocks of Iowa, 381. 



