956 



INDKX 



Earthquake fissures. ;!I7 



rift of California, 808 



vibrations, amplitude of, 310 



waves, propagation of , 342 

 Earthquakes, 33X 



causes of, 338 



destruction by, 341 



distribution of, 344 



epicentra, 342 



foci of, 3:19 



geologic effects of, 344 



vibrations, amplitude, 7, 340 

 Earth's history, early stages of, 420, 



431 



Earth's history, stages of, 13.~> 

 Eastern Interior coal field, 626 

 Eatonia medialis, 576 

 Eccentricity of the earth's orbit and 



climate, 895 



Eccyliomphalus triangulus, 526 

 Echinocaris punctata, 585 

 Echinoderms, Cambrian, 499 



Cretaceous, 770 



Devonian, 577, 580, 584 



Jurassic, 714 



Mississippian, 607, 609, 611, 613, 

 615 



Ordovician, 530, 532 



Pennsylvania!!, 657 



Silurian, 548, 549 



Triassic, 700 



Echinoids, Mississippian, 615 

 Economic geology, 2 

 Ecphora quadricostata, 827 

 Ectenocrinus grandis, 530 

 Edentates, Eocene, 787, 792 

 Elbe, mineral matter in, 204 

 Eldridge, J. H., 601, 808 

 Electricity, effects of, 108 

 Elephants, Miocene, 819 



Pleistocene, 719 



Pliocene, 843 

 Elephas antiquus, 921 

 Elephas primigenius, 843 

 Eleutherocrinus cassedayi, 585 

 Ellensburg formation, 839 

 Elotheres, 803 

 Emmons, S. F., 601 

 Empire beds, 810 

 Enchanted Mes:i. 15!) 

 "Encrinital limestone." GO!) 

 Kudothyra bailcyi, 01 1, 61.1 

 Englacial debris, 2 .IX 



load of glaciers, 251 

 Ensis direct us, 825 



Enstatite, 77 



Knteletes hemiplicata, 658 

 Entrenched meanders, 171 

 Eocene chalk, 783 



climate, 797 



fauna, 787-796 



flora, 786 



formations on Atlant ic coast , 77 1 



geography of, 7S3 



life, general features of, 7S 1 



mammals, 787 



non-marine deposits of, 77C> 



of Africa, 783 

 Asia, 783 

 Australia, 7s.". 

 Europe, 780 

 Oregon, 779 



of Pacific coast, 77 I. 77 .1 

 South America, 7S3 



period, 772^804 



close of, 780 



duration of, 778 



system, thickness of, 770 

 Eolian deposits, 900, 910 



rocks, 83 



Eoscorpius carbonari us, (i.1.1 

 Eotrocus concavus, (>1 1 

 Epeirogenic movements, 3.12 

 Epicontinental seas, 9 

 Epidote, 77 

 Equisetales, 646 



Carboniferous, 647 



Triassic, 691 

 Equisetum, 616 

 Equus, Pliocene, S 13 

 Eretmocrinus remibrachiut us. 6 ') > 

 Erian series, 559 

 Erosion, by running water, ,< 

 of, 140 



and climate, 1 .10 



by glaciers, 252, 2.1 1 



by waves, 299 



by wind, 100 



rate of, 11!) 

 Eskers, 273, S71. 872 

 Esmeralda formation, S12 

 Esopus grit. .1.1'.). 5 H 

 Eucalyptocrinus erassus. .ii! 

 Euconulus fulviis. g 

 Kugnathus athostoniii^, 717 

 Kumetria marcyi, '! 1 



jmieitfs gracilisj .13:; 



varians. .1:;.". 



Eupachycrinus magi>tcr. >.is 

 I'luphoberia anuigera 



