weeks] PETROLOGY, AND MINERALOGY FOR 1892-1900. 
95 
Geologic formations described— Continued. 
Castle granite, Weed, 5946. 
Castle limestone, Weed, 5953. 
Catadupa beds, Hill, 2564. 
Catskill sandstone, Clarke and Schuchert, 
965, 977. 
Cavaniol group, Drake, 1539. 
Cave Creek formation, Cragin, 1128. 
Cayugan, Clarke, 971. 
Cayugan, Clarke and Schuchert, 965, 977. 
Cedar formation, Turner, 5471. 
Ceratops beds, Stanton and Knowlton, 5203. 
Cedar Valley limestone, Udden, 5517. 
Cedar Valley limestone, Williams, 6195. 
Cedar-Valley stage, Calvin, 711, 712, 715. 
Cedar Valley stage, Norton, 4124. 
Ceratops beds, Marsh, 3711. 
Cerro Gordo moraine, Leverett, 3495. 
Chadron formation, Darton, 1328. 
Chalk Mountain nevadite, Emmons, 1712. 
Chamberlain shale, Weed, 5953. 
Champaign moraine, Leverett, 3495. 
Champlain clays, Emerson, 1677. 
Champlainic, Clarke, 971. 
Champlainic, Clarke and Schuchert, 965, 977. 
Chapelton beds, Hill, 2564. 
Chapman sandstone, Williams, 6190. 
Charleston sandstone, Campbell, 741. 
Chase, Beede, 398. 
Chase formation, Prosser, 4495. 
Chattanooga shale, Campbell, 736, 7:;7, 738, 7 in. 
Chautauquan, Clarke, 971. 
Chautauquan, Clarke and Schuchert, 965,977. 
Chazy, Bell, 406. 
Chazy limestone, Clarke, 971. 
Chazy, Cushing, 1245. 
Chazy, Ells, 1661. 
Chazy Marcou, 3663. 
Chazy, Winchell and Ulrich, 6337. 
Chazy limestone, Clarke and Schuchert, 965. 
Chemung, Luther, 3603. 
Chemung, Prosser, 4497. 
Chemung, Hies, 4622, 4623. 
Chemung beds, Clarke, 971. 
Chemung beds, Clarke ami Schuchert, 965. 
Chemung group, Luther, 3602. 
Chemung series, Prosser, 4493. 
Cherokee shales, Crane, 1137. 
Cherokee shales, Haworth, 2375. 
Cherokee shales, Keyes, 3113, 3139, 3148. 
Cherokee shales, Marbut, 3646, 8647, 3649. 
Cherokee shales, Orton, 4170. 
Cherryville shales, Haworth, 2375. 
Chesapeake formation, Clark, 912. 
Cheshire quartzite, Emerson, 1676, 1677, 167.S. 
Chester amphibolite, Emerson, 1676. 
Chesterfield group, Shaler and Woodworth, 
4939. 
Chestnut Hill schists, Rand, 4528. 
Cheyenne sandstones, Gould, 2073, 2075. 
Cheyenne sandstones, Prosser, 4491, 4496. 
Chickamauga limestone, Campbell, 735, 740. 
Chico formation, Fairbanks, 1768. 
Chicopee shale, Emerson, 1676, 1677. 
Chico-Tejon, Marcou, 3664. 
Chitistone limestone, Rohn, 4660. 
Chocolate limestone, Beede, 390. 
Geologic formations described— Continued. 
Chouteau limestone, Keyes, 3156. 
Chouteau limestone, Keyes and Rowley, 3119. 
Chouteau limestone, Shepard, 4946. 
Chuar terrane, Walcott, 5815. 
Churchill sandstone, Tyrrell, 5499. 
Cimarron series, Adams, 12. 
Cimarron series, Cragin, 1128. 
Cimarron series, Jones, 2936. 
Cimarron series, Prosser, 4491. 
Cincinnati, Winchell and Ulrich, 6337. 
Cincinnatian, Clarke, 971. 
Cincinnatian, Clarke and Schuchert, 965, <»77. 
Clark formation, White, 6052. 
Clarksburg formation, Van Hise and Barley, 
5704. 
Clear Creek limestone, Safford and Schuchert, 
4733. 
Clearwater shale, Tyrrell, 5501. 
Clinch sandstone, Campbell, 735, 740. 
Clinton, Bell, 406. 
Clinton beds, Clarke, 971. 
Clinton, Foerste, 1839, 1843. 
Clinton. Gilbert, 1992. 
Clinton formation, O'Harra, 4129. 
Clinton, Ries, 4623. 
Clinton beds, Clarke and Schuchert, 965. 
Clinton formation, Foerste, 1*40. 
Clinton group, Luther, 3603. 
Clinton limestone, Blatehley and Ashley, 496. 
Clinton shale, Luther. 3602. 
Clinton stage, White, 6070. 
Clipper Gap formation, Lindgren, 3547. 
Clitambonites bed, Winchell and Ulrich, 6337. 
Coaledo formation, Diller, 1509. 
Coal Measures, Beede,' 395. 
Coal Measures, Drake, 1539. 
Coal Measures, Fletcher, 1828. 
Coal Measures, Keyes, 3122. 
Coal Measures, McCalley. 3818. 
Coal Measures, White, 6049. 
Coastal series. Hill, 2564. 
Coasters Harbor Island arkose, Shaler, Wood- 
worth, and Foerste, 1940. 
Coatzacoalcos formation, Spencer, 5148. 
Cobre formation, Hill, 2564. 
Coeymans limestone, Clarke, 971. 
Coeymans limestone, Weller, 6003. 
Coeymans limestone, Clarke and Schuchert, 
965, 977. 
Coldwater shale, Gordon, 2069. 
Coldwater shales, Lane, 3394, 3400. 
Coles Brook limestone, Emerson, 1677, 1678. 
Colorado, Bain, 196. 
Colorado formation, Todd, 5421, 5428, 5436. 
Colorado formation, Spurr, 5175. 
Colorado formation, Weed, 5945. 
Columbia formation, Clark, 911. 
Columbia formation, Spencer, 5148, 5152. 
Columbia lava, Lindgren, 3548. 
Columbia lava formation, Russell, 4707. 
Comanche, Gould, 2075. 
Comanche, Prosser, 4491. 
Comanche, Stanton, 5201. 
Comanche Peak limestone, Vaughan, 5739. 
Comanche Feak formation, Hill and Vaughan, 
2562. 
