952 



INDEX 



Cinder cones, 372, 380 



Cirque, Plate XVII 



Circumferential shortening, 35s, 3.V.) 



Cladodus springeri, (i()S 



Cladoselache t'yleri, 010 



Claibornian formation, 77 I 



Claosaurus annectens, 704 



Clark, W., 750 



Clark, W. B., 728, 742, 71 I, 795, 807 



Clarke, F. W., 23 



Clarke, J. M., 587 



Clarno formation, 778 



Clastic rocks, 36, 38, 82 



Clay, 82 



Clay ironstone, 82 



Claypole, E. W., 359 



Clear Fork formation, 661 



Cleavage, 17, 54 



Clements, T. M., 461 



Cliff glacier, 232, 235 



Climacograptus bicornis, 531 



Climate and erosion, 150 



Climate of Cambrian, 492 



Comanchean, 737 



Cretaceous, 759 



Devonian, 575 



Eocene, 797 



Glacial, causes of, 894 



Jurassic, 710 



Miocene, 818, 827 



Mississippian, 606 



Ordovician, 545 



Pennsylvanian, 651 



Permian, 666, 677 



Proterozoic, 474 



Silurian, 545 



Triassic, 686 



Climatic changes of earth, 429, 849 

 Clinkstone, 82, 86 

 Clinometer, 400 

 Clinton beds, 537, 538 



iron ore, 538 

 Coal, 38, 83, 630 

 Coal beds, number of, 641 



chemical changes in the production 

 of, 635 



Comanchean, 734 



( 'retaceous, 748 



in Africa, 643 



in Asia, 642, 709 



in Brazil, 013 



in Europe, 641, 736 



in Montana series, 749 



in Pottsville conglomerate, 020 



in South America, 13 



Coal beds continue/ 



Jurassic, 70!) 



Larumic, 750 



Measures, (if):;, 021 

 period, 590 



origin of, 030 



Penusylvaniaii, 624 



plants, climatic implications of 

 651 



purity of, 030 



Tertiary, 771, 775, 770 



Triassic, 689 



varieties of, 637 

 Coaledo formation, 779 

 Coal-field of Moscow, 604 

 Coal-fields, 620 



extent of, 037 

 Coast-lines, length of, 317 



shape of, 306 

 Coast Ranges, 359, 70S 

 Coastal Plain, Pleistocene 



of, 900 

 Cobleskill limestone, 537 

 Coccosteus decipiens, 591 

 Coelenterata, Cambrian, -199 



Devonian, 576, 580, 585 



Jurassic, 714 



Mississippi, 608, 015 



Ordovician, 532 



Silurian, 551 

 Coeymans limestone, 559 

 Coleman, A. P., 474, 910 

 Coleopters, 051 

 Colorado series, 746, 747 

 Columbia series, 901, 902 

 Columnar structure, 17, 400 

 Columnaria alveola! a. 531 

 Comanchean angiosperma, 73,s 

 Comanchean period, 727 



climate of, 737 



close of, 735, 737 



fauna of Texas, 740 



flora of, 737 



Comarocystis punctatus. r>:;o 

 Common salt, 32 1 

 Comobeds, 705, 721. 7:52 

 Composition of rain-water, 1 K) 



river-water, 1 10 

 Compound alluvial fan, 181 

 Compsognot \\\\<, 720 

 Concretions, 1 1. *3 



Cretaceous. 7 IS, 719 



Condylarthra, Kocenr. 7s7 



Concniaugh series 020 

 Conglomerate. :; 



