INDEX. 
627 
GIRGENTI. 
Girsceuti, Newer Pliocene of, 207. 
Glacial drift, distribution and nature of, 
IGG. 
-epoch in the Post-Pliocene, IGG. 
-formations of Pliocene age, 189-192. 
Glaciation of Kussia and Scandinavia, 174. 
-of Scotland, 175. 
-of Wales and England, 180. 
-of North America, 182. 
Glaciers, transporting and abrading power 
of, 1G8. 
Glasgow, marine strata near, 146. 
Glauconie grossi^re, 275. 
Glen Tilt, junction of granite and schist at, 
559. 
Globiform pitchstone, 512. 
Glohigerina Milloides, 288. 
Globular structure of volcanic rocks, 510. 
Gl'iptostrobus, Eurojjoeus, (Eningen, 223. 
Gneiss, granite veins traversing, 560. 
-defined and figured, 577. 
-, fundamental, of Scotland, 493. 
Gold mines of Australia and Chili, 616. 
-veins of Russia, 61G. 
- of California, of age of alluvium, 
G17. 
Goldenberg, Professor, on Saarbriick coal 
insects, 406. 
Goldfuss, Professor, on reptiles in coal, 
406. 
Goniatites crenistria, 43G. 
- Listeri, coal-measures, 405. 
Goppert, on American forms in Swiss 
Miocene flora, 223. 
-on petrification, 68. 
-on plants of coal-measures, 398. 
Gorgonia infunclibuh'formis, Permian, 388. 
Graham’s Island, forming ashy conglome¬ 
rate, 549. 
Grampians, Old Red conglomerates of, 73. 
-, trap-rocks of the, 547. 
-, former glaciers in the, 175. 
Grand Canary, Upper Miocene, shelly tuffs 
of, 558. 
Granite, composition of, 552. 
-, graphic and columnar, 553, 554. 
-, how far connected with trap-rocks, 
558. 
-, hydrothermal action in formation of, 
555. 
-metamorphosing fossiliferous strata, 
581. 
-, porphjuutic, 556. 
-, oldest, 574. 
-, protrusion of solid, 574. 
-, passage of, into trap, 558. 
-, schorly, 557. 
-veins, 559. 
-veins in talcose gneiss, 560. 
Granton, angiosperm found in coal at, 429. 
Graptolites of Llandeilo flags, 474. 
Graptolites Murchisonii, Llandeilo flags, 
473. 
Graptolithus 2 )riodon, Silurian, 467. 
Gray’s, Essex, pachyderms found at, 161. 
Great (or Bath) Oolite, 342. 
Greece, Upper Miocene formations of, 226. 
Greenland, continental ice of, 170. 
-, gradual sinking of, 72. 
Greenstone, 505. 
Gres de Beauchamp, Paris basin, 273. 
Gres de Fontainebleau, age of the, 230. 
HEER. 
Griffiths, Sir R., on yellow sandstone of 
Ireland, 441. 
Grit defined, 36. 
Groups, older, rise highest above the sea, 
139. 
-, why the newest to be studied first, 
140. 
Gryllacris lithanthraca, Coal, 405. 
Gryphcpa coated with serpulce, 48. 
- cohimba, Chloritic Sand, 300. 
- convexa, Chalk, 295. 
- incurva {G. arcuata), 54, 354. 
- virgula, Kimmeridge clay, 336. 
Gryphite Limestone, 354. 
Guadaloupe, glass cavities in quartz of, 
555. 
Gulf-Stream, probable abrading power of, • 
Giimbel, M., on RhEetic beds, 366. 
Gunn, Mrs., on pot-stones in the chalk, 
291. 
Gutbier, Colonel, on Permian flora, 393. 
Gymnogens, term explained, 303. 
Gypseous marls of Auvergne, 233. 
Gypsum and gypseous marl defined, 38, 
39. 
Gyrolepis tenuistriatus, Rhaetic beds, 367. 
HAIME, Mr., on palaeozoic corals, 431. 
Hakea silicina and Hakea saligna, (Enin¬ 
gen, 222. 
Hall, Captain Basil, on Cyclopean Isles, 
530. 
-, Sir Jallies, on curved strata, 75. 
-, Mr. J., on Appalachian palaeozoic 
rocks, 110. 
Hallstadt and St. Cassian beds, 376. 
Holy sites catenularis, Silurian, 465. 
Hamilton, Sir W., on eruption of Vesuvius, 
1779, 526. 
Hamites spiniger^ Gault, 301. 
Hancock, Mr., on Protorosaurus in Per¬ 
mian, 390. 
Harkness, Professor, on Silurian metamor- 
phic rocks, 602. 
Harlech grits, fossils of the, 486. 
Harris, Major, on the Salt Lakes, 374. 
Harpactor maculipes^ (Eningen, 224. 
Harpe, M. de la, on Bournemouth Eocene 
flora, 263. 
Hartung, Mr., cited, 496. 
Hartz mountains, mineral veins of, 608. 
-, Bunter Sandstein of, 380. 
Hastings Sands, subdivisions of the, 316. 
Halites Alpes, granite of the, 571. 
Haiiy on isomorphism, 502. 
Headon series, fossils of the, 255. 
Heat, powerful in consolidating rocks, 
65. 
-, rocks upraised and folded by, 92. 
Hebert, M., on age of Sables de Bracheux, 
330. 
-, comparison of Sables Moyens and 
Barton shells, 258. 
-, on pisolitic limestone, 285. 
Hebrides, dikes in the, 514. 
Heer, Professor, on American genera in 
Swiss Miocene, 239. 
-, on age of Madeira leaf-bed, 532. 
-, on Arctic Miocene flora, 269. 
-, on Bear Island flora, 441. 
-, on Bovey Tracey Miocene flora, 247. 
