532 



INDEX. An-Be 



Analyses of pyroxene, 368. 



of quartz-hornblende-andesite, 259. 



of rhyolite, 211. 



of sandstones, 210. 



of schists and shales, 285. 



of slates, 225. 



of syenite, 225. 



Ananchytes, figure of, 490. 

 Ancestry of the horse, 523. 

 Ancient and modern volcanic pheno- 

 mena, 168. 



seas, climatal conditions of, 453. 

 Andesine, 23. 



in Scotland, 363. 



Audesite, 40. 



and propylite compared, 262. 



Andesites, 258. 



of the Cheviots, 298. 



Angle of rest of sediments, 331. 

 Anglesey, 129. 



metamorphic rocks of, 381. 



serpentine of, 312. 



Anomodontia, 514. 



Anorthite, 23. 



Ansted on solfataras, 192. 



on bitumen in springs, 193. 



Anticlinal dip, 64. 



valleys, 142. 



Antiquity of the earth, 12. 



Antrim, iron ores of, 51, 435. 



Apatite, artificial formation of, 420. 



Apennines, serpentine of, 288. 



Apes, fossil, 525. 



Apiocrinus, figure of, 487. 



Apophylite, 28. 



Aporosa, Duncan on succession of, 483. 



Aragonite organisms, 106. 



Arans, 294. 



Area, origin of, 440. 



Archaean rocks of America, 396. 



Archaeoniscus, figure of, 491. 



Arctic flora, 469. 



glaciers, 150. 



province, 458. 



region, 461. 



Ardnamurchan, 318. 



Ardtun Head, leaf -beds of, 317. 



Arenig volcanoes, 294. 



rocks, 340. 



Argyll, Duke of, on Ardtun Head, 317. 



on lakes, 136. 



Arnaboll series, 386; 



Arran, general features of, 240. 



Arrangement of materials in lakes, 161. 



of rocks at the surface, 61. 



Art of the miner, 416. 

 Arthur's Seat, 305. 



Artificial groups of strata, Godwin- 

 Austen on, 527. 



manure, 47. 



Asaphus, figure of, 493. 

 Ash-deposits on the ocean floor, 183. 

 Asosan, crater of, 187. 

 Aspect of basalt, 283. 



of lava, 186. 



Asphalt of the Dead Sea, 193. 

 Aspedochelyidae, 513. 



Assynt series, 386. 



Asteroidea, 484. 



Asthenoid types, 437.' 



Atacama, salt plains of, 133. 



Atmospheric denudation, 143. 



Atoll, 116. 



Atwood, Melville, on cinnabar and gold 



of Colusa, 397. 

 Augite, 24. 



in metamorphic rocks, 367. 



Augite-andesite, 40, 259, 274. 



of Ben Shiant, 319. 



dykes, 339. 



Augite-syenite, 223. 

 Australian province, 459. 



region, 465. 



Avicula, figure and characters of, 440. 

 Aymestry, limestone, 109. 

 Ayr, porphyrites of, 299. 

 Ayrshire, Permian volcanoes of, 311. 

 serpentine of, 313. 



BADDELEY on distribution of gold mines, 

 398. 



Bagshot sands, 46, 100. 



Baier. 3. 



Baikal Lake, 135. 



Baily, W. H., on flora of Ballypallidy, 

 317. 



Baku petroleum wells, 193. 



Bala limestone, phosphatite of, 103. 



oolitic, 109. 



Banff granite, 238. 



Baring Islands, shells above sea-level in, 

 326. 



Barmouth grits. 94. 



Barnsley coalfield, iron of, 430. 



Barrande's colonies, 450. 



Barrier reef, 416. 



Bars at the mouth of rivers, 165. 



Basalt, 41, 277. 



in Arran, 304. 



in relation to dolomite, 286. 



of the Clyde basin, 309. 



of the Forth basin, 308. 



of North of Ireland, 315. 



of Eowley Hills, 303. 



Basalt and augite andesite compared, 

 280. 



Basaltic iron ore, 435. 



Base in igneous rocks defined, 254. 



Basic granite of Ardara, 243. 



volcanic rocks, 35. 



Bass Rock, A. Geikie on, 308. 



Bath, oolites near, 71. 



Baths of Leuk, 197. 



Bauerman, H., on copper, 419. 



Bawdon Castle syenite, 233. 



Beaumont, E. de, on European convul- 

 sions, 345. 



Bedding of gneiss, 372. 



Bedford Level, rivers of, 159. 



Bedfordshire chalk hills, 5. 



Beer Head, flints in chalk, 111. 



Belemnitella, 501. 



Bell on Crustacea, 491. 



Ben Cruachan, 335. 



