546 



INDEX. Up-Zo 



Upheaval as affecting volcanic outbursts, 



175. 



forming lakes, 135. 



in the North of Europe, 326. 



Upper Greensand foraminifera, 479. 



Uralite, 25. 



Uses of granite, 36. 



Ussher on raised beaches of Devon and 



Cornwall, 327. 



VALLEYS, 138. 



Vallisneri, 6. 



Varieties of amphibole, 369. 



of granite, 216. 



of pyroxene, 368. 



Veins, age of, 405. 



in granite, 34. 



relation to igueous action, 414. 



Veinstones, 250. 



Velocity of fluid lavas, 186. 



Verde Antico, 23. 



Verde di Prato, 289, 



Vermes, 495. 



Verschoyle, Archdeacon, on trap dykes, 



329. 

 Vertical sequence of rocks, 52. 



strata, 76. 



Vesuvius, 3, 187. 



fossils ejected from, 179. 



Vicary on volcanic rocks of Exeter, 313. 

 Virginia Mountains, propylite of, 256. 

 Viridite, 255. 

 Volcanic ashes, foliation in, 382. 



rocks of North Wales, 293. 



Volcano, its structure, 181. 

 Volcanoes near the sea, 190. 



without cones, 188. 



Voluta, figures of, 499. 



WADHURST clay, iron ore of, 433. 

 Wallace on lead of Alston Moor, 424. 



A. R. , on tropical plants, 471. 



Wallerius, 3. 



Wallich, Dr., on flint, 112. 



on voyage of the " Bulldog," 443. 



Wall on Trinidad, 193. 

 Walls of the vein, 412. 

 Warm temperate zone, 458. 

 Wastdale granite, 235. 

 Waste of cliffs, 126. 



of rocks, 144. 



Waterfalls, 154. 

 Waterformed rocks, 44. 

 Weald, elevation of, 329. 

 Wealden iron ore, 433. 



sands, 97. 



Weaver on Irish metamorphic rocks, 392. 

 Wellingborough iron ore, 433. 

 Werner, 3. 



Werner, his eight systems of veins, 413. 

 West African province, 460. 

 Westbury iron ore, 431. 

 West Chiverton, lead of, 423. 

 West of Scotland, rocks of, 383. 

 Wheal Mary Ann, Le Neve Foster on, 



422. 



Wheal Clifford hot spring, 197. 

 Whitaker on river- valleys of the Weald, 



330. 



White micas, 365. 

 Wicca Pool, slate of, 102. 

 Wicklow, gold of, 418. 

 Wiltshire, Portland sand of, 97. 

 Winchell on Falls of St. Anthony, 156. 

 Wind, a denuding agent, 143. 

 Wolf Kock, phonolite of, 251. 

 Wolkenburg, 262. 



Woodward, Dr. H., on Crustacea, 491. 

 H. B., on volcanic rocks of the 



Mendips, 302. 



J., 6. 



Dr. S. P., Manual of the mollusca, 



498. 



provinces of marine life, 457. 



Woolhope, anticlinal of, 64. 



Work of rivers, 160. 



Wrekin, pre-Cambrian volcano of, 291. 



Wright on British echinoderms, 491. 



on star-fishes, 485. 



Wiinsch, on trees in volcanic ashes, 305. 

 Wyoming, leucite hills of, 284. 



XlPHOSURA, 493. 



YELLOWSTONE GEYSERS, 195. 

 Yorkshire coalfield, iron of, 430. 

 Ouse, 157. 



ZEOLITES, 27. 

 Zellerthal, 25. 

 Zinc, 425. 

 Zircon, 27. 



syenite, 38, 224. 



Zirkel, 22. 



on augite andesite, 275. 



on basalt, 277, 284. 



on classification of igneous rocks, 



212. 



on gneiss, 396. 



on propylite, 262. 



on rhyolites, 270. 



on texture of igneous rocks, 253. 



on trachyte, 266. 



Zittel on sponges, 478. 



Handbuch d. Palseontologie, 480, 



496. 



Zostera marina as a source of metals, 

 399. 



BY BALLANTYNE, HANSON AND CO. 

 EDINHURGH AND LONDON. 



