552 



INDEX 



Ammonoidea, 402f, Carboniferous, 426; 

 Cretaceous, 486; Devonian, 402; Ju- 

 rassic, 466; Mesozoic, 442 ; Permian, 

 434; Triassic, 452. 



Amorphous minerals, 11. 



Amphibia, Carboniferous, 427; Cenozoic, 

 495; Devonian, 407; Jurassic, 469; 

 Mesozoic, 442; Palaeozoic, 367; Per- 

 mian, 435 ; Triassic, 453. 



Amphiboles, I9f, 194, 289. 



Amphitheatres, 316. 



Amp hither iiun, 473. 



Amygdaloidal texture, 190. 



Analcite, i8f, 202. 



Anaptomorphus, 505. 



Anchisatirus, 455. 



Anchura, 489*. 



Ancodus, 509. 



Ancyloceras, 488. 



Andes, Pleistocene glaciers of, 536; up- 

 heaval of, 483. 



Andesine, i6f, 17. 



Andesite, 20of, 279, 297 ; breccia, 203 ; 

 obsidian, 200; tuffs, 203. 



Angiospermae, Mesozoic, 441. 



Anhydrite, 23. 



Annularia, 421. 



Anomodontia, 455. 



Anoplotheres, 509. 



Anorthic system of crystals, 10. 



Anorthite, i6f, 201. 



Anorthosite, 202. 



Antarctic continent, Eocene, 501 ; ice- 

 sheet of, 108. 



Ant-eaters, fossil, 523, 538. 



Antecedent rivers, 324. 



Antelopes, fossil, 517, 522. 



Anthozoan corals, 463. 



Anthracite, 2i6f, 289, 295, 414. 



Anthracopalcemon ', 424. 



Anthracotherium, 509. 



Anticlinal ridges, 318, 3,19 ; valleys, 319. 



Anticline, 234*, 235*. 



Anticlinorium, 236*. 



Anticosti Island, 378. 



Ants, fossil, 442, 465. 



Apatite, 24f, 193, 198, 199. 



Apennines, upheaval of, 515. 



Aphelops, 517*. 



Apiocrinus, 464. 



Appalachian coal field, 414. 



Appalachian land, 369, 375, 386, 387. 



Appalachian Mountains, 237, 334 ; cycles 

 in, 341 ; denudation of, 103 ; thrust 

 faults of, 254 ; upheaval of, 439. 



Appalachian range, 332. 



Appalachian revolution, 439. 



Aqueous rocks, 205. 



Aragonite, 23-)-, 171, 214, 290. 



Aralia, 515. 



Araucanian formation, series, or stage, 



S23, 524- 



Araucarians, Jurassic, 462 ; Triassic, 449. 



Araucarites, 449. 



Arbor Vitae, 502. 



Area, 434. 



Arcestes, 451*, 452. 



Archaean period, 355, 358f. 



Archaean rocks, theories as to, 360. 



Archceopteiyx, 473*, 492. 



Archegosaurus, 427. 



Archimedes, 419*, 425. 



Arctic, flora and fauna, 537 ; shells in 

 England, 522. 



Arenaceous shale, 208. 



Argillaceous rocks, 207 ; sandstone, 206. 



Arietites, 467. 



Arizona, earthquake of 1887, 63. 



Arkose, 2o6f, 293. 



Armadillos, fossil, 522, 523, 538. 



Artesian wells, 94. 



Arthrodira, Carboniferous, 426 ; Devo- 

 nian, 405^ 



Arthropoda, Cambrian, 372; Carbonif- 

 erous, 424; Cretaceous, 488; Devo- 

 nian, 400; Jurassic, 464; Mesozoic, 

 442; Ordovician, 381; Permian, 432; 

 Silurian, 391 ; Triassic, 450. 



Articulata, 374. 



Artiodactyla, 505, 506, 509. 



Artocarpus, 515. 



Asaphus, 381, 383. 



Asar, 157, 3i2f. 



Asbestus, 20. 



Ashes, volcanic, 5 if, 203. 



Asia, Archaean of, 360 ; Cambrian of, 

 370 ; Carboniferous of, 417 ; Creta- 

 ceous, 484; Devonian of, 398, 399, 

 Eocene, 500 ; Jurassic, 461 ; Miocene, 

 514; Ordovician, 377; Permian, 431 ; 

 Pleistocene, 536 ; Silurian, 388 ; Trias- 

 sic, 448. 





