958 



INDEX 



Foliation continued 



of drift, 852 



ice, 2S2 

 Foraminifera, Carboniferous, 642 



Cretaceous, 768 



Eocene, 794, 795 

 Forbes, J, D., 287 

 Forbesiocrinus wortheni, 609 

 Fordilla troyensis, 498 

 Forel, F. A., 287, 332 

 Formative eon of earth, 435 

 Forster, W. G., 351 

 Ft. Pierre formation, 746 

 Ft. Union formation, 777 

 "Fossil" ore, 538 

 Fossils, 36 



of Proterozoic, 474 

 Fox Hills formation, 746 

 Fraas, E., 798 

 Fredericksburg series, 731 

 Freestone, 83 

 French chalk, 81 

 Fresh-water limestone, 333 

 Friction, source of heat in ice, 



248 



Frontal aprons, 871 

 Fulgar spiniger, 827 

 Fulgurites, 83, 109 

 Fuller, M. L., 201 

 Fundamental complex, 443 

 Fundamental gneiss, 441 

 Fusulina limestone, 642, 659 

 Fusulina secalicus, 658 

 Fusus (?) interstriatus, 796 



texanus, 740 

 Future glaciation, 931 



Gabbro, 29, 60, 83 



Gabbroid, 61 



Gaisa beds, 492 



Galena limestone, 510 



Galenite, 77 



Gangamopteris cyclopteroides, 671 



Gangue, 84 



Ganister, 84 



Ganoids, 579 



Garnet, 77 



Garnetite, 84 



Gas and oil in Devonian, 571 



Ohio, 517 

 Gaseous hypotheses of earth's origin. 



416 

 Gases in igneous rock, 2.'! 



in lava, kinds of, 387 

 rocks, 432 



Gastropods, Cambrian, 498 



Cretaceous, 771 



Eocene, 7!) 1 



Genevieve, 616 



Hamilton, 586 



Helderbergian, 577 



Jurassic, 712 



Kinderhook, 607 



Onondagan, 580 



Ordovician, 526, 527 



Oriskany, 579 



Osage, 610 



Pennsylvanian, 657 



Silurian, 551 



Tertiary, 796, 826 



Triassic, 699 

 Gay Head, 845 

 Geanticlines, 403 

 Geikie, A., 204, 213, 351, 366, 393, 



411, 490, 519, 786 

 Geikie, J., 267, 294, 894, 921, 929, 



930 



Genesee shale, 559 

 Genevieve fauna, 612, 613, 614 



origin of, 611 

 Geodes, 44 

 Geognosy, 1 

 Geology, defined, 1 

 Georgian series, 476 

 Geosaurus suevicus, 718 

 Geosynclines, 403 

 Geotectonic geology, 1, 394 

 Gerber, E., 185 

 Germany, Devonian in, f>7 J 

 Geyserite, 84 

 Geysers, 213 

 Giant Geyser, 214 



Gilbert, G. K., 8, 140, 155, 157, P.M. 

 334, 335, 366, 369, 397. isl. s'.H. 

 893, 905, 913, 930 

 Ginkgoales, Triassic, 691 

 Ginkgos, 670 

 Glacial bowlders, 267, 851 



climate, causes of, 894 



debris, varied nature of, _' V. 



deltas, 273, 871 



epochs, Cambrian, lit'J 

 Devonian, 575 

 early, 429 

 in Europe, x'.M 

 in North America, 874 

 Mississippian, 606 

 Permian, 666 



erosion, topographic rlTrrU >f. 

 256 



