538 



INDEX. Gu-In 



Gumbel on Iherzolite, 287. 

 Giinther, Dr., on palaeichthyes, 501. 

 Gypsum, 21, 105. 



HADDINGTON district, volcanoes of, 



308. 



Hade, 77. 



Haematite of Cumberland, 428. 

 Hahn, Otto, 19. 

 Hamilton, 2. 



on serpentines of Tuscany, 289. 



on Tuscan springs, 196. 



Sir w., on Vesuvius, 188. 



Haplite, 36, 217. 



Hardman on rhyolite of Tardree, 211, 



315. 



Harlech grits, 46. 

 Hartley dyke, 339. 

 Harz Mountains, 4. 

 Harzburg Forest, 25. 

 Haughton, S., on Carlingford syenite, 



205. 



on Donegal granites, 243. 



on eruptive granites, 247. 



on sranite of Cornwall, 229. 



on Ross of Mull, 239. 



and Bonney on minette, 237. 



Hayden on geysirs, 195. 

 Haytor iron mines, 427. 

 Headlands, 123. 

 Hebbnrii dyke, 339. 

 Hebridean gneiss, 385. 

 Hebrides, Inner, 130. 



strike of rocks in, 382. 



Heddle on Hebridean gneiss, 385. 



on inclusions in granite, 372. 



on minerals in metamorphic rocks, 



361. 



on serpentines, 367. 



Heim on elevation in the Grisons, 352. 

 Heliolites, figure of, 481. 

 Helix, figure of, 442. 

 Helston, tin near, 421. 

 Helvellyn rhyolite, 236. 

 Hennock, dolerites of, 302. 

 Hensborough granite, 230. 

 Henslow on metamorphism, 359. 



on dykes at Plas Newydn, 338. 



Herodotus, 2. 

 Herschel, Sir W., 17. 



Sir J., on volcanic energy, 202. 



Hertfordshire pudding-stone, 97. 

 Hesperornis, 519. 

 Heterocercal tail, figure of, 502. 

 Hetts dyke, 339. 

 Heulandite, 28. 

 Hexacoralla, 482. 

 Hexactinellid sponges, 478. 

 Hicks, Dr. H., on Berwynia, 473. 



on St. David's, 291, 385, 396. 



High force, columnar basalt, of, 337. 



Green dyke, 339. 



Higher orders succeed lower, 476. 



Highlands, mica schist in, 383. 



Hill and Bonney on Charnwood Forest, 



233, 293. 

 Hinde, Dr. G. J., on sponges, 478. 



Hinde, Dr. J. G., on receptaculites, 478. 



on vermes, 495. 



Hochstetter on geysers, 196. 

 Holopea, figure of, 499. 

 Holoptychius, figure of, 504. 

 Homceosauria, 512. 

 Homotaxis, 449. 

 Hope series, 386. 



Hopkins, W., on pressure of steam, 328. 

 theory of elevation, 177, 328. 



Hordwell Cliff, sands of, 97. 

 Horizontal sequence of rocks, 51. 

 Hornblende, 25, 369. 



andesite, 261. 



granite, 221. 



slates in Scotland, 388. 



syenite, 222. 



Hornblendic schists like diorite, 380. 

 Horse, Marsh and Huxley on the, 523. 

 Hot springs, 196. 

 Hudleston on serpentine, 312. 

 Huggins, W., 17. 



Hughes, M 'Kenny, on glauconite, 98. 

 on gnarled schists, 381. 



Hulke, J. W"., on dinosaurs, 516. 

 Hull on Mayo granite, 248. 

 Humboldt on bombs, 185. 



on earthquakes, quoted, 321. 



on gneiss of the Andes, 394. 



on volcanic mud streams, 184. 



Humboldtilite at the Lowther Iron 



Works, 203. 



Humidity, wasting influence of, 145. 

 Hungarian dacite, 263. 

 Hunstanton Carstone, 97. 

 Hunt, Sterry, on eruptive rocks, 202. 



on veinstones, 250. 



Huronian series, 396. 

 Button, work of, 529. 

 Huxley, Prof. T. H., 44. 



on homotaxis, 450. 



on lacertilia, 512. 



on persistent types of life, 451. 



text-books of, 491. 



Hyalomelane, 281. 

 Hybodus, figure of, 503. 

 Hydrocorallina, Prof. Moseley on, 480. 

 Hydrozoa, 480. 

 Hymenocaris, figure of, 494. 

 Hypersthene, 24. 

 Hypothesis of magmas, 169. 



ICEBERGS, 151. 

 Iceland, 28. 



geysers of, 194. 

 Ichthyornis, 519. 

 Ichthyosauria, 515. 

 Ideal section, 35. 



Identification of strata by fossils, 448. 

 Idocrase, 27. 

 Igneous evolution, 201. 

 Igneous rocks related to sandstones, 211. 

 Illsenus, figure of, 492. 

 Imperfection of the geological record, 



445. 



Inclination of strata, 63. 

 Inclined strata, not so deposited, 331. 



