588 



INDEX. 



Climate, Cambrian, ii 273 



Comanchean, iii, 129 



Cretaceous, iii, 161, 172 



Early Cretaceous, iii, 129 



Glacial, hypotheses of, iii, 424 



influence on erosion, i, 127- 

 132 



Jurassic, iii, 79 



Miocene, iii, 261, 281 



Mississippian, ii, 518 



Ordovician, ii, 342 



Permian, ii, 669 



post-Pliocene elevation and, 

 iii, 316 



Salina, ii, 387 



Silurian, ii, 396 

 Climatic conditions of Trias, iii, 



29 

 Climatic effects of carbon di- 

 oxide, i, 643 



of life, i, 643 



of water vapor, i, 643 

 Climatius, ii, 490 



scutiger, ii, 490 

 Clinch sandstone, iii, 548 

 Clinkstone, i, 468 

 Clinocerasmumiaeforme, ii,352 

 Clinometer, i, 501 

 Clinton formation, ii, 370, 375 



iron ore of, ii, 377 

 Clinton limestone, iii, 554. 556 

 Clitambonites anomala, ii, 356 

 Clypeaster, iii, 294 

 Coal, i, 468 



Alaska, map of, 111, 203 



Arizona, ii, 552 



burnt, of Wyoming, iii, 153 



China, ii, 590 



Colorado, iii, 159 



Comanchean, iii, 124 



composition of, ii, 570 



Cretaceous, iii, 159 



Eocene, iii, 202 



European, thickness of, ii, 

 585 



Great Britain, ii, 586 



Jurassic, iii, 78 



Lias, iii, 73 



Middle Jurassic of England, 

 iii, 73 



Narragansett basin, ii, 549 



New Mexico, ii, 552 



Newark, iii, 4 



occurrence of, ii, 517 



Oligocene, in Europe, iii, 25 



origin of, ii, 564. 565 



Pennsylvania, ii, 627 



Richmond, iii, 40 



Triassic, iii, 4 



of Virginia, iii, 17 

 Coal-bearing shale, ii, 562 

 Coal-beds, European, ii, 585 



faulted, ii, 580 



history of, ii, 571 



number of, ii, 572 



Rhine basin, ii, 587 



Russia, ii, 587 

 Coaledo formation, iii, 202, 

 203 



Coal-field, Donetz, ii, 515 

 Eastern Interior, ii, 548 

 Moscow, ii, 515 

 Northern Interior, ii, 548 

 Western Interior, ii, 548 

 Coal-fields, productive, ii, 546, 



547 

 Coal flora, ii, 591 

 Coal formation, effect on atmos- 



sphere, ii, 664 

 Coal Measures, ii, 541 

 African, ii, 590 

 Asian, ii, 589 

 Australian, ii, 590 

 Central American, ii, 591 

 European, deformation of, ii, 



588, 589 

 European, thickness of, ii, 588 

 New Zealand, ii, 590 

 section of, ii, 550 

 South American, ii, 591 

 thickness of, ii, 582 

 unconformities in, ii, 574 

 Coal Period, ii, 539 (see also 

 Pennsylvanian) 

 duration of, ii, 582 

 Coal plants, climatic implications 

 of ii, 603 

 var eties of, ii, 576 

 Coast-lines, i, 353, 363-366 

 effect of gradation on, i, 333, 



363 

 effect of subsidence on, i, 329, 



332 

 effect of vulcanism on, i, 332- 



33 

 forms of, i, 329. 333. 363. 364 

 Coast ranges, crustal shorten ng 



due to folding of, i, 549 

 Coastal Plain, Pbistocene of, iii, 



447 

 Coasts, natural bridges on, i, 



351 

 Cobb, C, cited, i, 36 

 Cobleskill limestone, ii, 370, 389 

 Coccosteus decip.ens, ii, 487 

 Cochran formation, iii, 550 

 Ccelacanthidae, iii, 86 

 Coelenterata, Cambrian, ii, 286 

 Devonian, ii, 456, 463, 470, 



476 

 geologic contribution of, i, 661 

 Mississippian, i, 521, 523, 530 

 Ordovician, ii, 360, 361 

 Silurian, ii, 407 

 Coldwater shales, iii, 553 

 Coleman, A. P., cited, ii, 151, 181 ; 



iii, 482, 490, 491 

 Collier, A. J., cited, ii, 390 

 Collins, A. L., cited, i, 474 

 Collision, origin of nebulae by, 

 ii, 21 

 of planetesimals, ii, 66, 72 

 of stars, ii, 53 

 Colodon, iii, 253 



Colorado, Canyon of, i, 98, 233; 

 iii, 312 

 coal, iii, 159 



sections of strata in, iii, 570, 

 572 



Colorado series, iii, 72, 142, 148, 



155. 157. 166, 568 

 Columbia formation, iii, 447, 450 



fossils of, iii, 451 



origin of, iii, 452 



stratigraphic relations, iii, 451 

 Columbia river, i, 171 

 Columbus limestone, iii, 554 

 Columnar structure, i, 498-500 



effect on weathering, i, 153, 

 154 

 Columnaria alicolata, ii, 361 

 Comanchean cephalopods, iii, 136 



corals, iii, 135 



echinoids, iii, 135 



fauna of Texas, iii, 135 



fresh-water fauna, iii, 134 



gastropods, iii, 134, 135, 136 



land-animals, iii, 133 



marine faunas, iii, 134 



pelecypods, iii, 134, 135, 136 

 Comanchean period, iii, 106 



climate of, iii, 129 



close of, iii, 124 



distinct from Upper Creta- 

 ceous, iii, 125 



life of iii, 130 



terrestrial vegetation of, iii, 

 130 

 Comanchean system, iii, 107, 

 108, no 



Atlantic and Gulf border, iii, 

 108 



Arizona, iii, 117 



chalk of, iii, 117 



coal of, iii, 124 



Mexico, iii, 118 



north of United States, iii, 123 



northern interior, iii, 119 



Pacific border, iii, 122 



Panama, iii, 124 



Texas, iii, 115 

 Comarocystis punctatus, ii, 



359 

 Comets and meteorites, relations 



of, ii, 36 

 Common springs, i, 235 

 Como beds, iii, 97, 119 (see also 

 Morrison) 



position of, iii, 66 

 Compression joints, i, 514 

 Compsacanthus, ii, 614 

 Compsognathus, iii, 97 

 Comstock, T. B., cited, ii, 221, 



265 

 Concave tracts of crust, i, 585, 



586 

 Concretions, i, 438, 468, 490 



loess, iii, 409 

 Condon, T., cited, iii, 310 

 Condylarthra, iii, 224, 229 

 Conemaugh series, ii, 542, 557 



560; iii, 554 

 Cones, cinder, i, 608 



composite, i, 610 



formation of, i, 608 



geyser, i, 237 



lava, i, 608 



spatter, i, 610 



tufa, i, 611 



