630 



INDEX. 



PAGE 



Ganocephala 403 



Ganoids, Carboniferous 402 



Devonian 335 



Jurassic 436 



Gar-fish 338 



Gas, smoke, ani flame from volcanoes 93 



natural 386 



Gasteropods, Carboniferous 392 



Devonian 333 



Cretaceous 480 



Silurian 316 



Tertiary 511 



Gastornis Edwardsii 521 



Gault 424 



Geikie 254 



Genesis of existing orders, families, etc 539 



Geographical Fauna of Quaternary times 575 



Geological chronology, mode of construct- 

 ing 199 



fauna and flora differ more than geo- 

 graphical 197 



horizon, definition 196 



observation, means 166 



period, tested by life-system 196 



period, tested by rock-system 196 



Geology, definition . 1, 2 



departments 1 



dynamical 3 



historical 279 



structural 163 



German Ocean, tides 43 



Geysers, Bunsen's artificial 110 



theories of eruption 106 



Bunsen's investigations of 107 



definition 101 



description 101 



Mackenzie's theory 106 



phenomena of eruption 103 



of the Yellowstone 103 



Gianfs Causeway 213 



Gibson 422 



Gigantitherium caudatum 455 



Gilbert 9, 14, 80, 113, 211, 232, 286, 423 



Giuko, evolution 361 



Ginkophyllum 361, 412 



Glacial epoch 545, 546 



climate, Croll's theory 590 



climate, Wallace's views 592 



epoch, first 563 



epoch, drift-materials 546 



epoch, in Europe 570 



epoch, second 570 



erosion, general results 573 



lakes.-. 58, 574 



scorings 57, 549 



times in America, probable condition 



during 552 



valley, section across 58 



Glaciation 57, 549 



Glacier, great RhOne 571 



Glaciers, advance and retreat 48 



as a geological agent 55 



conditions necessary for 46 



definition 45 



PAGE 



Glaciers, irregularities of surface 51 



earth and stones on surface 53 



evidences of former extension 58 



fissures 67 



general description 50 



graphic illustration 48 



in Western North America 563 



line of lower limit 49 



motion 48 



motion and its laws 59 



motion, theories of 61 



Croll's theory of '. ... 65 



Forbes's theory of 61 



Thompson's theory of 66 



Tyndall's theory of 63 



physical theory of veins 69 



ramifications 46 



structure 66 



transporting power 57 



veined structure 68 



Glaphyroptera gracilis 435 



pterophylli 417 



Globigerina bulloides 162, 472 



ooze 162 



Glyptocrinus decadactylus 312 



Glyptodon clavipes 587 



Glyptolemus Kinairdii , 337 



Gneiss 220 



decay 7 



Gold, auriferous veins 241, 247 



drift in relation to 600 



Goniatites, crenistria 395 



lamellosus 333 



Lyoni 395 



Goniopygns major 478 



Goodfellow 113 



Gorges, how formed 15 



Gossan 239 



Grand Cafion of the Colorado 17 



Granite, decay 7 



graphic. 203 



origin 223 



porphyritic 203 



syenitic 203 



veins 205 



Granitic rocks, chemical composition and 



kinds 203 



rocks, mode of occurrence 204 



Graphite 354 



Graptolites 308 



Clintonensis 303 



Graptolithus Logani 308 



Greenland coasts 136 



Green River Basin, Wahsatch beds 530 



River Basin, Bridger beds 532 



Greensand 474 



Green-stones 206 



Gryphaea calceola 458 



Pitcheri 479 



speciosa 460 



Gulf Stream, probable agency in forming 



reefs 159 



Guppy 160 



Guyot 39 



