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VOLUMES XXI-XX5. 



515 



Geo log- y — 



Anchisaurus, Marsh, ix, 169. 

 Anguilla bone cave, vii. 71 ; xxx, 130. 

 Ann Arbor. Winchell, xxx, 315. 

 Annelid jaws from the Wenlock and 



Ludlow of England, i. 244. 

 Annelids. Silurian of Gotland, v. 392. 

 Anthracite field of Pennsjdvania, sur- 

 vey of, i, 154; ii. 152; v. 157! 387; 



vii. 407. 



of Colorado, iii. 64. 

 in Sotiora. Mexico, iv. 399. 

 mining, ii. 152. 

 Anthracopupa. Whitfield, i. 126. 

 Antlitz der Erde. work on, Suess. vii. 



151; ix. 418. 

 Apatite of the Canadian rocks. Vennor. 



viii, 74. 

 Appalachians, age of, Elliott, v, 282. 



materials of, xxx, 316. 

 Aralo-Caspian basin, xxx, 243. 

 Archaean, divisibility of, Irving, ix, 



237 ; on subdivisions of. Whitney, 



viii, 313. 

 Archseopteryx. the Berlin, viii. 465. 

 Argillite of Newfoundland. Wads- 

 worth, viii. 101. 

 Argillites, Braintree. Dodge, v. 65. 

 Arvonian formation, v, 478. 

 Azoic System, work on. Whitney, viii, 



313. 

 Basrocrinus. Wachsmuth and Springer. 



vi, 365. 

 Bavarian Geology, work on, Giimbel. 



viii. 317. 

 Becraft's mountain. Davis, vi, '381. 

 Bedding, origin of. Dana, viii, 393. 

 Belgium, fossiliferous metamorphic 



rocks, v, 234. 

 Bermuda, Rice, ix. 338. 

 Bernardston fossils, Whitfield, v, 368. 

 Birds. Jurassic, Marsh, i. 341 ; ii. 337. 



toothed, i, 255. 

 Bituminous matter in Ohio shales, 



Orion, iv, 171. 

 Bitumens, origin of, Peckham, viii, 105. 

 Black Hills, Newton, ii, 399. 

 Blue Ridge, near Balcony Falls, 



Campbell, viii, 221. 

 Bosnia, Herzegovina, Geol., v. Mojsiso- 



vies. i. 409. 

 Bowlder clays, see Glacial. 

 Brains of Tert. mammals, vi. 71; ix, 190. 

 Brick-clays making cream-colored 



bricks in Minnesota, iii. 64. 

 British, relation to Scandinavian, 



Judd, xxx, 393. 



Columbia, ii. 75; ix. 444; xxx, 



79. 

 Brontosaurus, restoration of. Marsh. 



vi. 81. 



Geology — 



Buried valleys, ii, 151, 486; v. 472; 



vii, 149. 

 Burlington limestone in New Mexico. 



Springer, vii, 97. 

 California, stratigraphy of. xxx, 399. 

 Cambrian in British Columbia, xxx. 

 79. 



subdivisions of, v, 478; vii, 321. 

 Camptosaurus, Marsh, ix. 1 69. 

 Caribbean Miocene fossils, Gabb, ii, 77. 

 Catskill plateau continued in Pennsyl- 

 vania, v, 471. 

 Caverns. American, work on. Hovey, 



iv. 238. 

 Centre County, Penn., viii. 396. 

 Cephalopoda, new, Dwight, vii, 254. 



on genera of fossil. Hyatt, viii. 

 488. 

 Ceratosaurus. Marsh, vii, 329 ; viii, 



161. 

 Chalk, sponge-spicules from, i, 407. 

 Channel-fillings, Devonian, Williams. 



i, 318. 

 Chemung, fauna of. Williams, v. 97, 



311. 

 China, Work on. Richthofen. vi, 80, 

 152. 

 fossil plants of, Newberry, vi, 123. 

 Cincinnati rocks, fossils of. iii, 65. 

 Cirriped, new Devonian, Clarke, iv, 55. 

 Claiborne, age of. ix. 457 ; xxx, 60. 

 266, 270, 300, 421. 

 fossils of, Mell, i, 157. 

 Clays, sedimentation of. Brewer, ix, 1. 

 Climate and eccentricity, Haughton. 

 iv, 436. 



mild polar, Groll, ix, 20. 138. 

 of later geological time, i, 149, 150; 

 iii, 489; v, 153. 



of Siberia in era of Mammoth, i, 

 148. 



secular changes in, ii, 437. 

 see Glacial Climate. 

 Climatic Changes, work on. Whitney, 



i, 149, 150; iii, 489; v, 153. 

 Climatichnites Fosteri, Todd, v, 233. 

 Coal, Arctic, i, 157. 



borings for, Neb., Hicks, ix, 159. 

 coking, of Colorado, iii, 64. 

 field, Brazos, Texas, ii, 152. 

 Canon City, Col., iii, 152. 

 Deer Creek, Walcott, ix, 338, 

 Flora, Carboniferous, Lesquereux, 

 i, 329, 409; viii, 470; see further 

 under plants. 



regions, Pennsylvania, i. 153. 

 329; ii, 152; v, 387; vii. 407; viii. 

 396, 470; xxx. 160. 

 Coals and lignites of the Northwest 

 Territory, xxx, 77, 



