802 



INDEX. 



United States, Devonian strata of, 543. 



Lower Miocene of, 279. 



Older Pliocene and Miocene formations 



in, 277. 



section of geological structure of, 497. 



Silurian strata of, 570. 



Trias of, 451. 



IJnstratification of Nile deposits, 118. 

 Upheaval, theory of violent, considered, 723. 



of calderas, theory of, 635. - 



of the Weald, 366. 



Upper Green sand, 331. 



Miocene sea in area of Downs, 371. 



Yal d'Arno, newer Pliocene strata of, 



196. 

 Upraised marine strata in Sardinia, 121. 

 Upsala, erratics on modern marine drift near, 



150. 

 Ural Mountains, quartz veins of, 779. 



gold of, 779. 



TJrsus spelams, molar of, 135. 



Urville, Oapt. d 1 , on size of icebergs, 146. 



Val ni Koto, inland cliffs in, 76. 



volcanic formations of, 665. 



igneous rock of, 621. 



Valleys, origin of, 70. 



— - transverse, of "Weald, 362. 



Valorsine granite, 713. 



Valvata, Pleistocene, 29. 



Vanessa Pluto, Croatia, 245. 



Vegetation of Middle Eocene period, 290. 



of Devonian period, 546. 



Veins, granite, rocks altered by, 709. 



mineral. See Mineral Veins. 



chemical deposits in, 775. 



Veinstones in parallel layers, 772. 



Velay, volcanic formations of, 692. 



Venericardia planicosta (cardiia plani- 

 costa), 288. 



Venetz, M., on Alpine glaciers, 142. 



Ventriculites radiatus, Chalk, 329. 



Verneuil, M. de, on Permian flora, 462. 



on glacial drift of Eussia, 149. 



■ on Lower Silurian, United States, 571. 



Vertebrata, absence of, in oldest fossiliferous 

 rocks, 585. 



absence of, in lower rocks, 585. 



fossil, progress of discovery of, 588. 



Vesuvius, Newer Pliocene beds of, 189. 



age of lavas of, 658. 



dikes of, 663. 



depth of crater of, 645. 



Vicentin, columnar basalt in, 618. 



Vicenza, basaltic column near, 618. 



Victoria Land, erratics of, 146. 



Vienna basin, Upper Miocene of, 244. 



View of volcanoes of Olot, 668. 



of lava-current of Chaluzct, 690. 



of Isle of Cyclops, 659. 



of Gemunder Maar, 680. 



Virginia, coal-field of, 451. 



Miocene strata of, 273. 



Virlet, M., on corrosion of rocks near Corinth, 

 741. 



on cretaceous traps of Greece, 696. 



on inland cliffs, 73. 



volcanic dikes, 6. 



— — mountains, form of, 5. 



Viterbo, Older Pliocene volcanic rocks of, 

 673. 



Vitreous lava, 607. 



Volcanic rocks of Olot, 666. 



breccia, 602, 603. 



carboniferous rocks, 698. 



dike at St. Helena, 617. 



dikes of Sicily, 192. 



Eocene rock, 694. 



formation of Val di Noto, 665. 



mountains, form, structure, and origin of, 



623. 



mountains, form of, 623. 



rocks, synonyms and mineral composition 



of, 604-607. 



Volcanic rocks, 592. 



rocks of Auvergne, 684. 



rocks, Cambrian, 700. 



rocks, Cretaceous, Oolitic, and Lias, 696. 



columnar and globular structure of, 616. 



rocks, Laurentian, 701. 



rocks, structure of, 616-619. 



rocks, Silurian, 700. 



tuff, 6, 602, 607. 



Volcano of Puy de Come, 689. 



of Verigojo, height of, 642. 



Volcanoes, extinct, 6. 



of Auvergne, 684. 



of Canaries, 627. 



of Java, 626. 



of Sandwich Isles, 623. 



Voltzia heterophylla (brevifolia), 439. 

 Volume of hidden plutonic rocks, 722. 

 Voluta Zaniberti, Touraine Ealuns, 215. 



ambigua, Barton clay, 287. 



athleta, Barton, 287. 



Zamberti, Coralline and Eed Crag, 204. 



nodosa, Highgate, 293. 



Selse'imsis, 290. 



Von Buch, on Caldera of Palma, 634. 



on land rising, 45. 



on Silurian plutonic rocks, 725. 



Wacke. 607. 



Wael, M. de, on testacea in Antwerp crag, 



207. 

 Wagner, M„ on Miocene of Greece, 247. 

 Walchia piniformis, Permian, 463. 

 Wales, glaciation of, 158. 

 Walker, Dr., on Sequoia, 262. 

 Waller, quoted, 88. 

 Wallich, Dr., on Atlantic mud, 320. 

 Water, action of, in distributing heat, 742. 

 Waterhouse, Mr., on Tupaia Tana, 408. 

 Watt, Mr. Gregory, on cooling of metals, 



663. 



on fusion, 739. 



Waves, action of, on limestone, 78. 



Weald, map to illustrate denudation of, 357. 



valley, denudation of, 357, 367. 



Wealden formations, 345. 



term explained, 365. 



area of the, 351. 



plants and animals of, 333, 349. 



theory of fracture and upheaval of, 366. 



Webster, Mr. T., on tertiary strata, 182. 

 — — on Headon series, 284. 

 Weisstein, term explained, 708. 

 Wellington Valley caves, 126. 

 Wenlock formation, fossils of, 557-560. 



limestone, 557. 



shale, fossils of, 559. 



Werfen beds, composition of, 435. 

 Werner, on classification of rocks, 87. 



on plutonic formations, 767. 



Westerwald, igneous rocks of, 679. 



Westwood, Mr., on Lias beetles, 428. 



Wexford, veins of copper at, 777. 



Whinstone, 607. 



White Chalk, 12. 



Mountains, centres of erratic dispersion, 



166. 



sand of Alum Bay, 12. 



sands and Barton clay, 287. 



Wigham, Mr., on jaw of Mastodon, 198. 



Williamson, Prof., on calamites, 472. 



Wood, fossil and recent, perforated by mollus- 



ca, 24. 



fragment of, in Lias, 428. 



Wood, Mr. Scarles, on fish of Headon series, 



285. 



on Voluta Lamberti, 215. 



Woodstock, bone of reptile found at, 406. 

 Woodward, Dr. S. P., tables on marine testa- 

 cea, 205, 206. 



on Bridlington fossils, 199. 



on Hallstadt fossils, 436. 



on Madeira and Canarian shells, 675, 



676. 



