OCR Text |
Show 108 INDEX, Vela.y, ancieut~nlluviums covered by la\·a at different heights in, 262 Vertical and inclined strata, great line of, from the Isle of Wight to Dieppt", 315, Vesu~· ius, dikes of, 121 -- channels formed by the flowing of lava from, in 1779, 122 -- and Somma, difference in their com-position, 120 Vichy, tertiary oolitic limestone of, 232 -- dip of the lacustrine strata at, 233 Vienna, tertiary formations of, 21, 212 --age of the tertiary strata of, 214 -- basin, fossil shells of the-see Table, Appendix I. Vigol~no, gypsum intcrstratified with subApenuine marls at, }.')!) Villasmonue, shells found in limestone at, 65 -- list of fossil shells from-Appendix II., 54 Villefranche, bay of, tertiary strata found near the, 135 Vinegar river, sulphuric and muriatic :lcids, and oxide of iron, in the waters of the, 252 Virlet, M., on the tertiary strata of the Morea, 170 Viterbo, volcanic tuffs and sub-Apennine marls alternating at, 159 -- age of the volcanic rocks of, 183 Viviani, Professor, on the character of the Sicilian flora, 115 --on the tertiary strata of Genoa, 166 Vizzini, junction of inclined tuff and horizontal limestone near-see diagram No. 8, 70 -- changes caused by a dike of lam in argillaceous strata at, 70 - a bed of oysters between two lavacurrents at, 73 Volcanic breccias in Auvcrgne, how formed, 259 Volcanic conglomerates of the Val di Noto, 73 -- now forming on the shores of Catania and Ischia, 73 Volcanic dikes, strata altered by, 70, 368 Volcanic district of Catalonia, superposition of rocks in the-see wood-cut No. 47, 192 Volcanic line~, modern, not parallel, 349 Volcanic region of Naples, changes which it has undergone during the last 2000 years, 118 Volcanic rocks, distinction between sedi-mentary and, 10 -- relative age of, how determined, 36 --of the Val di Noto, 68 -- of Campania, their age, 126 -- of central France, 257 -- secondary, of many different ages, 335 Volcanic rocks, distinction between plutonic and, 359 Volcanos, mode of computing the age of 97 ' -- sometimes inactive for centuries 98 -- of Olot, in Catalonia, describ~d-sec Frontispiece, 183 -- extinct, of Sardinia, 193 --of the Lower Rhine and the Eifel, 193 -- the result of successive accumulation, 240 -- attempt to divide them into ante-diluvian and post-diluvian 268 Vo!hynia, tertiary formation~ of, 215 Voltz, M., on the loess of the Rhine 151 Von Buch, M.; on the Eifel, 201 ' --on the tertiary formations of Volhynia and Podolia, 215 -- on the general range of volcanic lines over the globe, 349 Von Dechen, M., on the volcanic district of the Lower Rhine, 201 -- on the Hartz mountains, 3-!6 --his objections to the theory of M. de Beaumont, 346, 347 -- on the Cornish granite veins-see wood-cut No. 87, 355 Von Oeynhausen, his map of the Eifel district, 193 -- on the volcanic district of the Rhine 201 I -- on the granite veins or Cornwallsee wood-cut No. 871 355 Walton, section of shelly crag near-see wood-cut No. 31, 174 --lamination of sand and loam nearsee wood-cut No. 34, 175 Warburton, Mr., (HI the Bngohot sand 280 Watt, Gregory, his experiments on m1elted rocks, 124, 372 Weald, denudation of the valley of tht> 285 ' -- second11ry rocks of the, divisible into five groups, 286 -- ~ection of the nlley of the-see wood-cuts Nos. 63 and 64, 287 288 -- clay, it> composition, 286 ' -- gradual rise and degradation of the rocks of the, 289 -- alluvium of the valley of the, 295 --extent of denudation in the valley of the, 303, 313 Wealden, s~condary group, called the, 325 -- orgamc rcmams of the, 325 -- its great extent and thickness 329J . --how deposited, 329 ' Webster, Mr., on the geology of the Isle of Wight, 18, 315 -- ou the tertiary formations of the London and Hampshire basins, 278, ~80 INDEX. 109 Wellington Valley, Australia, breccias containing remains of marsupial animals found in, 143 West Indian Archipelago, tertiary forma-tions of the, 132 Wey, transverse valley ofthe, 298, 299 Whewtl!l, Rev. W., 53 Wildon, thickness of the coralline lime-stone of, 214 Wiltshire, valleys of elevation in, 308 Wily, valley of the, 308 Wind$, ripple-mark5 caused by, on the dunes near Calais-see wood-cut No. 36, 176 Wrotham Hill, height of, 288 Yarmouth, thickness of crag in the cliffs near, 172 Ytrac, fresh-water flin!Js strewed over the surface near, 237 Zaffarana, valleys extending from the summit of Etna to the neighbourhood of, 83 Zocolaro, hill of, lava of Etna deflected from its course by the-see wood-cut No. 18, 86 Zoological provinces, great extent of, 40 Zoophytes, recent .species of, _but little known,47 THR END. London: Printed by W. CLOWII:91 Stnmford·street. |