INDEX. Mo-Ow 



54i 



Mont Dore, fractures of, 329. 



Monte Nuovo, 328. 



Monte Sooima, 187. 



Monticulipora, 495. 



Monumental stones, 146. 



Moore, Charles, on volcanic rocks at 



Shepton Mallet, 302. 

 Moreton, 6. 

 Morne Mountains, 23. 

 Moro, 3. 



Morpeth dyke, 339. 

 Moseley on fresh-water algae in hot 



springs, 194. 

 Mountain Cork, 314. 

 Mountain ranges, study of, 351. 

 Mountains, effect on strata, 80. 

 Mount Sorel granite, 233. 

 Mount's Bay, dolerites of, 300. 

 Mourn e granite, 243. 

 Mud streams from volcanoes, 184. 



of the Hebrides, 317. 

 Mud volcanoes, 192. 

 Mull, volcano of, 317. 

 Muscovite, 26. 

 Museums, 529. 



use of, 477. 



Myne of the Weald, 434. 



NANTWTCH, 21. 



Naphtha springs, 193. 



Native iron in basalt, 279. 



Natrolite, 28. 



Nature of deposits in gulfs, 164. 



and origin of gneiss. 370. 



of volcanic energy, 168. 



Nautilus, figure of, 500. 



Nearctic region, 462. 



Nebular hypothesis, 17. 



Necropolis hill, dolerite of, 309. 



Neocomian iron ore, 434. 



Neotropical region, 463. 



Nepheline, 23. 

 basalt, 285. 



in polarised light, 253. 



Neumayr on ancient Echinoderms, 452. 



Neusticosaurus, 514. 



Nevadite, 270. 



Newry granites, 244. 



Newton, Prof. Alfred, on Mascarene 

 birds, 443. 



Newton, Sir L, 13. 



New Zealand geysers, 196. 



Nicholson on Borrowdale rocks, 295. 



Nickel, 425. 



Nicol, Prof., on southern slope of Gram- 

 pians, 383. 



Niedermendig, 42. 



Nile delta, 166. 



Ninety-fathom dyke, 333. 



Nipped veins, 411. 



Noachian deluge, 5. 



Non-metallic minerals, 400. 



North American syenite, 222. 



Northampton sand, iron ore of, 433. 



North and West Britain, coasts of, 

 119. 



North Cornwall, lavas of, 301. 



North-east of Ireland, granites of, 243. 

 Northern flora, 469. 

 North of England, iron ores of, 428. 

 mineral veins in, 415. 



North of Ireland, mica slate of, 391. 

 North Wales, dykes of, 336. 

 North-west Highlands, gneiss of, 385. 

 Norway, fossil-bearing schists of, 394. 

 Nottinghamshire coal strata, 5. 

 Nucleolites, figure of, 490. 

 Nucleus of oolitic grains, 48. 

 Nullipores, 49. 

 Nummulina, 48. 

 Nummulites figured, 479. 



OBERSTEIN, 29. 



Obsidian, 37. 



Ocean level, possible changes in, 349. 



Ochills, 299. 



Odontornitb.es, O. C. Marsh on, 520. 



Oldest crinoid, 486. 



cystoidian, 488. 



mammals, 520. 



sponge, 477. 



star-fishes, 484. 



Old red sandstone, 46. 



volcanoes, 297. 



Oldham on earthquakes, 178. 

 Oligoclase, 23, 363. 



in polarised light, 253. 



Olivine, 27. 



diallage pikrite, 286. 



enstatite, 287. 



in basalt, 278. 



in polarised light, 253. 



Oolite, 47, 110. 



Oolitic foraminifera, 479. 



grains in recent limestones, 109. 



group, 54. 



Opacite, 255. 



Open ocean, life of, 443. 



Ophidia, 511. 



Ophioderma, 485. 



Ophiuroidea, 485. 



Orbit of the earth, 14. 



Orbulina, 48. 



Ord of Caithness, 248. 



Oreval, gabbro core of, 319. 



Oriental region, 464. 



Origin of faunas, 447. 



of mineral veins, 397. 



of species, 438. 



Ornithosauria, 517. 

 Orthoclase, 23, 362. 



in polarised light, 252. 



rocks (quartz-free), 38. 



Qsteolepis, figure of, 504. 



Ostracods in primary rocks, 494. 



Ostrea, figure of, 497. 



Ottawa series, 396. 



Outcrop, 66. 



Outlier, 67. 



Overlap, 79. 



Owen, Sir R., on advent of a higher 



type life, 476. 

 on archaeopteryx, 518. 



