CORUNDUM CRETACEOUS 65 



rage 



Corundum, Occurrence of ruby 21, T9o 



Cosmos Club, Presideutial address and entertainment by the Geological 



Society of Washington at the 23, 49 



Costa Rica, Geology of 29, 620 



CosTE, E., cited on Ontario oil fields 28, 723 



CoTTA, B., cited on nietamorphisiu 28, 383 



CoTTiNG, J. R., Geological work in Georgia of 25. 173 



CoTTON-cuLTtTRE reports of the Tenth Census 25, 176 



Cottonwood canyon (Big), Utah, Diagram showing the relations of the 



Cambrian and Alonkian quartzites in 21, 522 



CoTYLEDONARY node of Cycadeoidea ; G. R. Wieland 22, 91 



CoxjLTER, J. ;\I., cited on plant development 30, 548 



Council Bluffs, Iowa, and Omaha, Nebraska, Pleistocene of the vicinity 



of 22, 65, 730 



Council, Reiwrt of 21, 35 : 22, 56 ; 23, 38 ; 24, 2 ; 



25, 51 ; 26, 5 ; 27, 5 ; 28, 5 ; 29, 4 ; 30, 4 



ordered printed 21, 34 



■ — Paleontological Society 23. 77 ; 24. 101 : 25, 130 ; 



26, 144 ; 27, 142 ; 28. 192; 29, 123 : 30, 144 



CoupER, J. H., Geological work in (ieorgia of 25, 174 



Covey Hill beaches 25, 237 



Gulf, Location, origin, and features of 23, 471-474 



, Iroquois plane in the region of 24, 224 



revisited ; J. W. Spencer 23, 36, 471-475, 721 



Cowlitz River Valley, Eocene of 27, 174 



— Valley, Washington, Eocene of the 26. 136, 169 



Cox, A. H., cited on pillow lava 25, 601, 603 



CoxE, EcKi^Y B., Method of separating coal from slate devised by. . . . 21, 775 



Craig, J. I., cited on climatic changes 25. 541 



Crandall, a. R., quoted on dikes of Elliott County, Kentucky 26,482 



— and Williams, Report of. Concerning Catinga limestone 22, 202 



Crandall, Roderic, Cited on ants of South America 21, 452, 475, 479 



— , Photographs of ant-hills by 21, 449. 466. 4()7, 468, 481, 483 



Cranial elements in the Permian Tetrapoda, Xomeni'hiture of the.... 28.973 



Crater, Kilauea, a drop-fault 26, 77 



Crawford, J., Geological zones in Nicaragua established by 23, 495 



Crawford, R. D., cited on flow-breccia 26, 400 



Credner, G. R., cited on origin of pillow lavas 25. 637 



■ — ■ pillow structure 25. 596-597 



— , Reference to work of 28. 738 



Credner, H., cited on "Age of Mannnals" 27, 177 



his "Geologie" 27. 176 



monoclines 27. 91 



Cremacrinid.'e, Nomenclature, structure, and classification of the 24. 10!) 



Cresson mine, Cripple Creek, Colorado, Recent remarkal)le gold "strike" 



at 26, 84 



Cretaceo-Eocene age, Wasatch range overthrusts of 21. 5.39, 542 



Cretaceous age of the Potomac group indicated 26, 336 



V — Bull. Geol. Soc. Am. 



