INDEX. 



681 



Cambrian seas, spread of, 229 



237 

 sections of, 225, 263 

 sedimentation, 246 

 sponges, 287 

 stratigraphy and correlation, 



239 

 subdivisions of, 219 

 system, distribution of. 252 



outcrops of, 252 



thickness of, 252 

 Tasmania, 300 



Ten Mile region, Colorado, 264 

 Tennessee, 247 

 thickness of, 252 

 Tintic region, Utah, 267 

 trilobites, 281. 297 

 Upper, annelids, 299 



brachiopods, 299, 300 



cephalopods, 299 



corals, 299 



cystids, 299 



gastropods. 299, 300 



limit of. 243 



pelecypods, 299 



trilobites. 299. 300 

 vermes. 286 

 Vermont, 264 

 Wasatch mountains, 266 

 Wisconsin, 251 

 Camden chert. 422 

 Camerata, Osage. 522 

 Campbell, M. R., cited, 254, 319, 



434. 546, 557, 559- 560 

 Canaan formation, 503 

 Canada, Archean of, 146 

 Canadian system, 310 

 Caney shale, 504. 5" 

 Canyon series. 563 

 Carabocrinus vancortlandii, 359 

 Caradoc beds, 342 

 Carbon dioxide, a climatic factor 



in Permian, 661 

 amount of, in Mississippian 



limestone, 661 

 effect on temperature, 670 

 influence on plant growth, 



605 

 of air and ocean, equilibrium 



between. 665 

 of atmosphere, effect on 



moisture, 670 

 Carbonic acid gas of ocean, and 



agitation, 667 

 and temperature, 667 

 Carboniferous (see also Penn- 



sylvanian) 

 brachiopods, 615 

 bryozoans, 618 

 cephalopods, 615, 616 

 corals. 616 

 crinoidea. 616, 617 

 ferns, 593 

 fishes, 613 



flora, distribution of. 601 

 fresh-water iife, 612, 614 

 gastropods, 615, 616 

 igneous rocks. European, 588 

 insects. 610 

 land animals, 606 



Carboniferous land shells, 614 



marine life, 613 



mollusks, 615 



myriapods, 611 



pelecypods, 615, 616 



period, 559 



plants, 591-606, 611 



protozoa, 616. 618 



scorpions, 611 



spiders, 611 



terrestrial life, 614 



trilobites, 616, 618 

 Cardiocarpus, Mississippian 6ot 

 Carolina gneiss, 152 

 Caryocrinus ornatus, 403 

 Case, E. C, cited, 620 

 Catazyga headi, 356 

 Catskill formation, 433 

 Cauda Galli grit, 424 

 Cayugan series, 370 

 Central compression heat from, 



101 

 Cephalaspis, 482. 483, 485 

 Cephalopods, Cambrian, 283 



Carboniferous, 615, 616 



Devonian, 465, 477 



Genevieve, 532, 533 



Helderbergian, 454 



Kinderhook, 520, 521 



Mississippian, 525 



Ordovician, 352 



Permian, 653, 654 



Silurian, 403, 405 



Upper Cambrian, 299 

 Ceratiocarids, Silurian, 408 

 Ceratodus,. 487 

 Ceratopsis chambersi, 351 



oculifera, 351 

 Ceraurus pleurexanthemus. 349 

 Chain coral, Silurian, 407 

 Chamber lin, R. T., cited, 95 

 Chamberlin, T. C, cited, 198, 



302, 323, 337, 414. 613 

 Champlainic system, 310 

 Charleston sandstone, 559 

 Chautauquan series, 433 

 Chazy fauna, 365 



limestone, 310 

 Cheiracanthus, 490 

 Cheirolepis trailli, 489 

 Chemung brachiopods. 478 



fauna, 477 



formation, 433 



gastropods, 478 



pelecypods, 478 



pteropods, 478 

 Cherokee shales, 561 

 Chester beds, 500, 503 

 Chickamauga limestone, 316 

 Chilonyx. 650 

 China, coal of, 590 

 Chonetes, 465, 615 



cornutus, 403 



coronatus, 471, 472 



granulifera, 617 

 Chordata, 484 

 Chouteau or Kinderhook lime* 



stone. 500, 561 

 Chuar formation, 153 

 Cincinnati arch, 330, 335 



Cincinnatian series, 310 

 Circularity of orbits, evolution of, 



67 

 Cisco series. 563 

 Cladodoxylon, 595 

 Cladodus. 536 



springeri, 521 

 Cladoselache, 536 

 Clark, W. B., cited, 319 

 Clark formation, 559 

 Clarke, J. M., cited, 391, 45t, 

 478, (and Schuchert) 310, 

 370, 420 

 Clarksburg formation, 186, 187 

 Claypole, E. W., cited, 425 

 Clear Fork formation, 623 

 Clements, T. M., cited, 150, 151, 



180, 194 

 Clepsydrops, 649 

 Cbmacograptus bicornis, 362 

 Climate, Cambrian. 273 



Mississippian, 518 



Ordovician, 342 



Permian, 669 



Salina, 387 



Silurian, 396 

 Climatius. 490 



scutiger, 490 

 Clinoceras mumiaeforme, 352 

 Clinton formation, 370, 375 



iron ore of, 377 

 Clitambonites anomala, 356 

 Coa), Arizona, 552 



China, 590 



composition of, 570 



European, thickness of, 585 



Great Britain, 586 



Narragansett basin 549 



New Mexico, 552 



occurrence of, 517 



origin of, 564, 565 



Pennsylvania, 627 

 Coal-bearing shale, 562 

 Coal-beds, European, 585 



faulted, 580 



history of, 571 



number of, 572 



Rhine basin, 587 



Russia, 587 

 Coal-field, Donetz, 515 



Eastern Interior, 548 



Moscow, 515 



Northern Interior, 548 



Western Interior, 548 

 Coal-fields, productive, 546, 547 

 Coal flora, 591 



Coal formation, effect on atmos- 

 phere. 664 

 Coal Measures, "541 



African. 590 



Asian, 589 



Australian, 590 



Central American, 591 



European, deformation of, 

 588. 589 



New Zealand, 590 



South American, 591 



sections of, 550 



thickness of, 582, 588 



unconformities in, 574 



