Part 42

Gabian, Bituminous Springs of, 60. Gailenreuth, Caves of, 429, 430. Galacynus Œningensis, 339. Ganoid Fishes, 181, 217, 246. Garonne Valley, 428. Gastornis, 332. Gault, 281, 300, 309. Gavials of India, 259, 291. Geikie, Prof., on Till, 457. Gemerelli on Fossils, 6. _Geological humus_, 271. „ Inferences, Hypothetical Nature of, 3. Geological Record, Complexity of, 30. Geology, Objects of, 2, 3. „ a Recent Science, 3. „ its Influence on other Sciences, 3. „ How to be Studied, 3. Geosaurus, 256. Geoteuthis, 259. Gerilea protea, 318. _Geysers of Iceland_, 16, 67. Giants’ Causeways, 49. „ „ _in the Ardèche_, 48. „ Legends of, accounted for, 5. Gigantology, 384. Glacial Action during Permian Period, 174. „ Deposits of Northern England and Wales, 457. „ Period, 372, 378, 435. „ Evidences of, 463. „ Regions of Europe, 451. „ Theory of Martins, 462. Glacier System of Wales, 106. „ Systems, 440. Glaciers of Scotland, 454. „ of Switzerland, 449. „ of the British Isles, 457. Glauconie, or Glauconite, 300. Glaucous Chalk, 300, 310. Glenroy, Parallel Roads of, 456. Globe, Modification of Surface of, 26. Glyptodon, the, 401. Glyptolepis, 120. Gneiss of Cape Wrath, 32. „ Laurentian, 74. „ Composition of, 96. Goniatites, 127. _Goniatites evolutus_, 145. Goulet, Great and Little, 299. Granite, 182. „ Mineral Composition of, 32, 96. „ How Formed, 33. „ of St. Austell, 39. „ of Christiana, 36. „ of Dartmoor, 79. „ of Cornwall and Devon, 36, 38. „ Eruptions of, 90, 92, 98. „ Stratified or Foliated, 97. „ Qualities of, 32. „ How Formed, 33. „ _Veins of, at Cape Wrath_, 32. _Granitic Eruptions_, 92. Gran Seco, 410. Graptolites, 107. _Gravesend Chalk, under Microscope_, 278. Great Animal of Maestricht, 304. Great Oolite, 243, 250. „ Reptiles of, 250. Great Year, the, 436. Green, A. H., on Glacial Deposits, 458. Greensand, Upper and Lower, 275, 281, 297, 309. Greenstone, 35. Grès Bigarré, 37, 185. Grès de Beauchamp, 333. Grès des Vosges, 178. Grotta del Cane, 64. _Grotto des Demoiselles_, 433. Grotto of Cheeses, Trèves, 50. Gryphæa dilatata, 264. „ virgula, 269. „ _incurva_, 212. Gulf Stream, 435. Gymnogens, Plants with Naked Ovary, 152. Gymnosperms, 193, 283, 300. Gypseous Formation, 333. Gypsum Quarries of Montmartre, Fossils in, 73, 325. Gyroceras, 108.

Haidingera speciosa, 194. Hakea, 318. Hallstadt Beds, 205. _Halysites catenularius_, 113. _Hamites_, 288, 297. Hannibal’s Elephants, 387. Harkness, Prof., on Glacial Deposits, 458. Harlech Sandstones, 101. Hastings Sands, 287. Hawaii, Volcanoes of, 59, 69. _Head of Cave-bear_, 398. „ _of Cave-hyæna_, 399. „ _of Mosasaurus Camperi_, 306. „ _of Rhinoceros tichorhinus_, 360. Headon Beds, 330, 332. _Hemicosmites pyriformis_, 108. Hennessey, on the Earth’s Crust, 89. Hepaticas, 315. _Herbaceous ferns_, 131. Herbivora, Eocene, 325. Heterocercal, 175. Hippopotamus, 360, 379. Hippurites, 301, 310. Holl, Dr., on Malvern Rocks, 78. Holoptychius, 154. Homo diluvii testis, 367. Homocercal, 175. Hopkins, Evan, on Earth’s Antiquity, 20. „ „ on Terrestrial Magnetism, 22. „ W., Theory of Central Heat, 17. „ „ on the Earth’s Crust, 88. Horse, 379, 399, 417. Horse-tails, 134, 202. Hot Springs, 64. Hughes, T. McK., Discovery of Glutton by, 431. Hull, Prof., on Trias, 185. „ on Glacial Deposits, 458. Human Jaw, 472. „ Period, 474. Hunt, Rob., Electric Experiments of, 79. „ Prof. Sterry, on Formation of Crystalline Schists, 96. Hutton’s Theory of the Earth, 3. Hyæna Spelæa, 398, 417. „ _head of_, 399, 417. Hyænodon, 396. Hybodus, 217. Hyera, Island of, 70. Hylæosaurus, Lizard of the Woods, 205, 207, 225, 290. Hymenoptera, 225.

Iceland, Geysers of, 16, 65, 67. „ Lava Streams in, 60. „ Volcanoes of, 60, 67. Ichthyodorulites, 217. Ichthyosaurus, 218, 229, 255, 256. Ichthyosaurus, Coprolites of, 12. _Ichthyosaurus communis_, 218. „ _platydon_, 219, 222. Igneous Rocks, 31, 182. Iguana, 293. Iguanodon, 292. „ Mantelli, 285. „ _Teeth of_, 293. _Illænus Barriensis_, 112. Incandescence of the Globe, 17. „ of the Sun, 17. Indian Traditions of the Father of the Ox, 347. Inferior Oolite, 249. Infra-Lias, 209. _Injected Veins of Granite_, 32. Insects, 157, 225, 334. „ of Coal-measures, 151. „ of Oolites, 255, 266. Iron Age, 478. „ Ore in Coal-measures, 165. „ „ in Orgonian Beds, 298. _Ischadites Kœnigii_, 118. Islands, Sudden Appearance of, 70. Isle of Bones, 388. „ Lächow, 388. „ Portland, 270. „ Purbeck, 271. „ Wight Alligator, 326.

Jamieson, T. F., on Glenroy, 454. Jarrow Colliery, 139. Java, Volcanic Mountains of, 67, 69. „ Valley of Poison, 64. _Jaw and Tooth of Megalosaurus_, 291. „ _of Phascolotherium_, 245. „ _of Thylacotherium_, 245. Jet, 274. Juglandites elegans, 283. Jukes, J. B., on Devonian and Old Red Sandstone, 129. Jura Mountains, 243, 273. Jurassic Limestone, 243. „ Distribution of, 272. „ Reptiles of, 220. „ Plants of the, 238. „ Series, Distinguishing Features of, 215.

Kangaroo, 245. Kea, Mauna, 61, 69. Kellaways Rock, 264. Kent’s Hole, 380, 472. Kentish Rag, 287. Keuper, 199, 293. „ Rock Salt in, 199, 204. Kilauea, Volcano of, 56. „ Eruption of, 69. „ Crater of, 56, 59. Kimeridge Clay, 19, 243, 266, 269. King, Prof., on Permian System, 174. Kirkdale Cave, 380, 398, 429. Kjökken-Mödden, 477. Koessen Beds, 208. Kupfer Schiefer, 170.

Labradorite, 44. Labyrinthodon, 190. „ _pachygnathus_, 12. _Labyrinthodon restored_, 193. La Coupe d’Ayzac, Crater of, 45. Lacunosus laciniatus, 184. Lacustrine Habitations, 472. Ladies’ Fingers, 216. Lake Dwellings, 472. Lamellibranchs, 266. Landscape Stone, 208. Land-turtles, 190. Laplace’s Theory of the Earth, 17, 80. Lasmocyathus, 146. Laurentian Formation in Britain, 10, 79. „ Gneiss, 74. Lava Formations, 39, 51, 59. „ Streams of, 59. Lecoq, on Triassic Vegetation, 194. „ Keuper Flora, 202. „ Cretaceous Flora, 282. „ Tertiary Flora, 316. „ Flora of Miocene Period, 336. „ the Vegetation of Pliocene Period, 357. Leibnitz’ Fossil Unicorn, 386. Lepidodendra, 134, 138, 157, 173. Lepidodendron carinatum, 134, 138. „ _elegans_, 140. „ _Sternbergii_, 139, 141. „ _Sternbergii restored_, 142. Lepidoptera, 255. _Lepidostrobus variabilis_, 140. Lepidotus, 266, 272. „ gigas, 217. Leptæna Murchisoni, 127. _Le Puy, Chain of_, 51. Lias, The, 211; „ Lower, Upper, and Middle, 212. Liassic Period, 211, 217. „ Fauna, 213. „ Flora, 239. Libellula, 243. Licorn Fossil, 386. Life, First Appearance of, 99. „ Abundance of, in Upper Silurian Times, 104. Lignite, 337, 354. Lima gigantea, 212. „ striata, 189. „ proboseilea, 246. Limestone, 212. „ of La Beauce, 355. „ of Solenhofen, 243, 273. „ Metamorphism of, 73, 75. Limnæa, 272, 334. Lingula, 107. „ Credneri, 175. „ Flags, 101, 107. Lions with Curly Manes, 184. Lipari Isles, 55, 68. Lithographic Limestone of Solenhofen, 343. _Lithostrotion_, 181. „ _basaltiforme_, 145. _Lituites cornu-arietis_, 108. Lizard of the Meuse, 305. Llanberis Slates, 101. Llandeilo Flags, 109. Llandovery Rocks, 107. Loa, Mauna, 55. _Locarno, Fissures of_, 57, 58. Logan, Sir W., on Laurentian Gneiss of Canada, 10, 74. Logan, Sir W., on Underclay of Coal Measures, 161. Lomatophloyos crassicaule, 134, 138. _Lonchopteris Bricii_, 134, 144. London Clay, Flora of, 331. Longmynd Hills, 101. _Lonsdalea floriformis_, 145. Lophiodon, 325, 333. Lower Cretaceous Period, 286, 297. „ Keuper Sandstone, 186, 204. „ Neocomian, 297. „ Lias, 212. „ Silurian Rocks, 104. „ Oolite Fauna, 244. „ Oolite Rocks, 249. „ Greensand, 281, 287. Lucerne, The Giant of, 385. Ludlow Bone-beds, 112. „ Rocks, 111. _Lupea pelagica_, 354. Lycopodiaceæ, 134, 151. Lycopods, 123, 134. Lyell, Sir Charles, on Formation of Granite, 33, 36. Lyell, Sir Charles, on the Upper Cretaceous Flora, 300. Lyme Regis, 219, 225.

Machairodus, 379. „ _Tooth of_, 380. Macrorhynchus, 265, 272. Madrepores, 266. Maestricht Quarries, 285. „ Animal of, 302. „ Beds, 303, 304, 309. Magnesian Limestone, 170, 178. Magnetism, Terrestrial, Evan Hopkins on, 22. Malvern Hills, Dr. Holl on, 78. Mammals, First Appearance of, 207, 244. „ of Pliocene Period, 358. Mammaliferous Crag, 372. Mammiferous Didelphæ, 245. Mammoth, 347. „ of Ohio, 347. „ of the Unstrut, 386. „ Origin of Name, 388. „ Siberian Accounts of, 387-395. „ _restored_, 395. „ _Skeleton of the_, 383, 394. „ Teeth and Tusks of, 342. „ Tooth of the, 384. Man and Animals Compared, 465. „ First Appearance of, 382. „ Antiquity of, considered, 478. „ Age of St. Acheul Beds, 479. „ Morlot’s Calculation, 479. Mantell’s, Dr., Discoveries, 290. Marble, 74. „ Carrara, 73, 76. „ Cipoline, 76. „ of France, 76. Marbre de Flandres and M. de petit Granit, 150. Mare’s-tail, 134. Marl, 199. Marl-slate, 160. Marlstone of the Lias, 212. Marsupial Mammals, 207, 245, 250, 263. Martins, C., on Glaciers, 462. Mastodon, 341, 356, 360. „ its Discovery, 342. „ Opinions of Naturalists, 343. „ Difference from Mammoth, 341. „ Molar Tooth of, 346. „ Arvernensis, 372. „ angustidens, 347. „ _restored_, 345. „ _Skeleton of_, 344. „ _Skeleton of the Turin_, 359. „ _Teeth of_, 341, 342. Mauna Loa and Mauna Kea, 56, 69. Mazuyer’s Pretended Discovery, 348. _Meandrina Dædalæa_, 251. Mechanical Theory of the Earth, 15. Megaceros Hibernicus, 184, 400. Megalonyx, 371, 382, 400, 411. Megalosaurus, 291. „ _Jaw of_, 291. „ _Tooth of_, 291, 380. Megalichthys, 154. Megatherium, 382, 401, 418. „ _Pelvis of_, 407. „ _Restored_, 409. „ _Skeleton of_, 403. „ „ _foreshortened_, 406. Megatheroid Animals, Habits of, 413. Mendip Hills, Denudation of, 28. Mesopithecus, 339, 350. „ _restored_, 349. „ _Skeleton of_, 349. _Metallic veins_, 91. Metamorphic Rocks, 4, 71. Metamorphism, Special and General, 65, 71, 74. „ Action of, on Limestone, 71, 72, 75. „ of Combustible Materials, 14, 72. „ of Argillaceous Beds, 73. „ Cause of, 78. _Meudon Chalk under Microscope_, 277. Mexican Deluge, 485. Mezen, Le, Peak of, 44. Mica, Composition of, 96. Mica-schist, 77, 377. Microdon, 266. Microlestes, 207. „ Discovery of teeth of by Mr. C. Moore, 208. Middle Lias, 212. „ Oolite, 255. Miliola, 329. Millepora alcicornis, 240. Miller, Hugh, How he became a Geologist, 10. „ First Lesson in Geology, 124. Milliolites, 333. Mimosa, 318. Mineral Masses composing the Earth’s Crust, 27. Mines, Greatest Depths of, 88. Miocene, Meaning of, 314. Miocene Period, 336. „ Vegetation, 336, 339, 353, 381. „ Fauna, 339, 350. „ Volcanoes of, 51. „ Foraminifera, 356. „ Rocks of Greece, 339. Moel Tryfaen, 459. _Molar Teeth of Mastodon_, 346. Molasse, or Soft Clay, 338, 355. Mollusca, 245. „ of Pliocene, 371. „ of Eocene, 319. „ of Miocene, 350. „ of Crag, 373. „ Gasteropodous, 266. _Monitor Niloticus_, 305. Monocotyledons, 151, 266. Montmartre, Gypseous Series of, 333. „ Cuvier on Fossils of, 7. Mont Dore, 40, 43. Moraines, 444. Moro, Lazzaro, 6. Mortillet on Glaciers, 449. Mosaic Account of Creation, 24. Mosasaurus, 285, 302, 305. „ _Camperi_, 306. Mosses, 336. Moulin-Quignon, Chalk Beds of, 476. _Mount Ararat_, 480. „ Hecla, 67. „ Idienne, 64. „ Sion, 449. Mountain Limestone, 149. Mountains, First Appearance of, 90. „ Chains, Formation of, 28. Mud Volcanoes, 59. „ of Italy, 60, 63. Murchison, Sir R. I., Founder of Silurian System, 10, 102. _Murex Turonensis_, 350. Muschelkalk, 185, 188. Mussels, 189. Mylodon, 382, 400, 410, 413, 418. „ _Lower Jaw of_, 412. „ _restored_, 411. Mytilus, 189.

Nabenstein, Cavern of, 432. Naïdaceæ, 266. Nantwich Salt-works, 204. Nasal Horn of Iguanodon, 292. Natica, 189. Nautilus, 215. Nebular Theory of the Earth, 15. Nenuphar, 316. Neocomian Beds, 287, 297. „ „ of France, 286, 287. „ Formation, 286. „ Fauna of, 287. Neptunian Rocks, 30. „ Theory, 6. Nereites Cambriensis, 108. Neuroptera, 250. Neuropteris elegans, 194. „ _gigantea_, 143, 176. New Red Marl, 186. „ Period, 185. „ Sandstone, 185, 187. „ Plants of, 193. „ Colour of, 201. „ Fauna of, 201. New Zealand, Birds of, 184. Newer Pliocene, 372. „ „ of Alps, 377. „ „ of Sicily, 374. Nicol, Prof., on Ben Nevis, 90. Nilssonia, 194, 239. Nöggerathia, 177. Norfolk Forest Bed, 372. Northern Deluge, 424. Norwich Crag, 372, 478. Nothosaurus, 190, 196. Nummulites, 313, 326, 333. Nummulitic Formation, 334. „ Limestone, 326. Nympheaceæ, 315.

Odontaspis, 294. _Odontopteris Brardii_, 144. „ Cycades, 212. Œchmodus Buchii, 217. Œningen Formation, 338. „ Limestone, 367. _Ogygia Guettardi_, 107. Old Red Sandstone, 119. „ „ Colour of, 120. „ „ Period, Vegetation of, 120. „ „ Fishes of, 124. „ „ Rocks of, 128. „ „ Conglomerate of, 129. Older Pliocene, 372. Oldhamia, 101. Oldhaven Beds, 331. Olivine, 44. Oolite, 243, 272. „ of Solenhofen, 273. „ Upper, 243. „ Lower, 243, 244. „ Middle, 243. „ Great, 243. „ Conifers of, 249. „ Rocks, 249. Oolitic Fauna, 244. „ Mollusca, 246. „ Echinoderms, 247. „ Insects, 255, 266. „ Period, 243. „ Flora of, 248, 249, 255, 266. „ Mammals of, 255. „ Reptiles of, 256. „ Corals of, 247. „ Zoophytes of, 247. Ophiopsis, 246. Opossum, 245. Orgon Limestone, 297, 298, 299. Ornithorhynchus, 223, 245. Orthoceras, 141. „ Disappearance of, 205. „ _laterale_, 145. Orthoceratites, 104. Orthoclase, 33, 96, 418. Orthopithecus, 418. _Osmeroides Mantelli_, 294. Ossiferous Beds of Sansan, 350. „ Breccia, 2, 432. Ostrea deltoidea, 269. „ distorta, 272. „ liassica, 207, 212. „ _longirostris_, 350. „ Marshii, 246. „ virgula, 269. _Otopteris acuminata_, 248. „ _dubia_, 248. „ _obtusa_, 248. „ _cuneata_, 248. Ovid a geologist, 6. Owen, Prof., on Megatheroid Animals, 413. „ on Plesiosaurus, 228. Ox, 382, 399. Oxford Clay, 243, 264. Oysters, 175, 213.

Pachyderms, 312, 319, 418. Pachypteris microphylla, 255. Palæocoma Furstembergii, 213. Palæoniscus, 175. Palæontology, the Study of Ancient Life, 5. Palæontology Defined, 14. _Palæophognos Gesneri_, 421. Palæotherium, 319. „ _magnum and P. minimum, Skeletons of_, 322. „ _Skull of_, 321. Palæoxyris Münsteri, 202. Palæozoic Fishes, 173. Palissy, Bernard, on Fossils, 5. Pallas on the Siberian Rhinoceros, 361. „ on the Siberian Mammoth, 386. Palmacites, 315. Palms, 282. „ absence of, in Pliocene Period, 358. „ of Tertiary Epoch, 336. „ of Cretaceous Period, 283, 297. „ _Fossil, restored_, 284. Paludina, 272. Pampean Formation, 411. Pandanaceæ, The, 249. Pandanus, 255. Pappenheim, Lithographic Stone of, 273. _Paradoxides Bohemicus_, 100. _Parallel Roads of Glenroy_, 456. Parian Marble, 76. Paris Basin, Sir C. Lyell on, 329. Parkfield Colliery, 159. _Patella vulgata_, 205. _Peaks of the Cantal Chain_, 40. Pear Encrinite, 250. Peat-deposits and Shell-mounds, 472. Pecopteris, 120, 202, 252, 315. „ _lonchitica_, 143. Pecten, 201, 272. „ _Jacobæus_, 371. „ _orbicularis_, 202. „ Valoniensis, 207. Penarth Beds, 186, 205, 207. Pennine Chain, 115. _Pentacrinites Briareus_, 183, 214. Perched Blocks, 449. Permian Flora, 174. „ Rocks, 177, 186. „ Ocean, 180. „ Period, 15, 170. „ Fauna and Flora of, 183. _Perna Mulleti_, 288. Phascolotherium, 245, 255. Philadelphia Museum, 346. Phillips, Prof. J., on Rate of Formation of Coal, 132. Phillips, Prof. J., on Thickness of Carboniferous Limestone, 130. Phonolite, 43. _Physa fontinalis_, 266. Phytosaurus, 190. Pic de Sancy, 41, 43. Pimpinellites zizioides, 337. Pinites, 239. Pisolitic Limestone, 311. Pithecus antiquus, 339, 350, 356. Placodus gigas, 189. Planorbis, 266, 272, 334. „ _corneus_, 488. Plants, First Appearance of, 99. „ _of Devonian Period_, 123. „ _of the Palæozoic Epoch_, 114. Plastic Clay, 330. Platemys, 255. Platycrinus, 146. Platysomus, 174. Pleistocene Period, 378. Plesiosaurus, 221, 226, 255. „ Cramptoni, 230. „ _Sternum of_, 228. „ _Skull of_, 226. „ _Skeleton of_, 229. Pleuronectes, 326. _Pleurotoma Babylonia_, 246. Pleurotomaria conoidea, 246. Pliocene, Meaning of, 314. „ Period, 357. „ Birds of, 369. „ Series, 372. „ Vegetation of, 357. „ Fauna of, 359, 369. „ Reptiles of, 367. „ Mollusca of, 371. Plombières, Alkaline Waters of, 64. Plutonic Rocks, 31. „ Theory, 6. „ Eruptions, 31. „ Ancient Granite, 31. _Podophthalmus vigil_, 353. Pœcilopleuron, 265. Poikilitic Series, 199. Polyphemus, Supposed Bones of, 384. Polypodium, 315. Polyps of Carboniferous Period, 141, 246, 255, 286, 301. Polyzoa, 141, 143, 175, 307. Pontgibaud Mines, 64. Porphyritic Granite, 33. Porphyry, 33, 37. „ Definition of, 37. „ Components of, 37. Portland Isle, 270. „ Dirt Bed, 271. „ Sand, 243, 266. „ Stone, 243, 269. Posidonia, 189. Post-pliocene Period, 378. „ Animals of the, 382. „ Birds of the, 417. „ Carnivora of, 417. „ Deposits in Britain, 417. Post-Tertiary Epoch, 378. Potamogeton, 315. Pravolta, 447. Pre-glacial deposits, 418. Preissleria antiqua, 202. Prestwich, J., on Glacial Deposits, 459. PRIMARY EPOCH, 99. „ „ Retrospective Glance at, 180. „ „ Vegetation of, 182. Proboscideans of Crag, 372. Producta, 173, 175. „ _horrida_, 149. _Producta Martini_, 145, 205. „ subaculeata, 127. Protogine, 35. Protopteris, 283. Psammodus, 141. Psaronius, 174. _Psilophyton_, 123. Pteraspis, 129. _Pterichthys_, 125. Pteroceras, 269. Pterodactyles, 221, 233, 240, 243, 245. „ _brevirostris_, 235. „ _crassirostris_, 234, 256. Pterophyllum, 239, 249, 255. „ Jägeri, 202. „ Münsteri, 202. Pterygotus, 110. „ _bilobatus_, 113. Ptylopora, 146. Purbeck Beds, 269, 271, 279. „ Marble, 272. „ Isle of, 271. Puy-de-Dôme, 40, 43. _Puy-de-Dôme, Extinct Volcanoes of_, 53. Puys, Chain of, in Central France, 51. Pycnodus, 190. Pygopterus, 174.

Quadersandstein, 211. QUATERNARY EPOCH, 378. „ „ Animals of, 382. Quartz, 96. Quartziferous Porphyry, 33. Quartzite, 77.

Rain, First Fall of, 95. _Raindrops, Impressions of, in Rocks_, 14, 102, 173. Raised Beaches, 488. _Ramphorynchus_, 255, 259, 269. Ramsay, A. C., on the Lower Oolite, 252. „ „ on Formation of Keuper Marls, 201. „ „ on Colour of Red Rocks, 101. „ „ on Denudation, 28. „ „ on Formation of Granite, 33. „ „ on Glacial Deposits, 458. Reading Beds, 330. Recent or Historical Period, 378. Re-construction of Fossil Animals from a Part, 7. „ Difficulties Attendant on, 8. Red Crag, 372. Reindeer, 379. _Relative Volume of the Earth_, 83. _Remains of Plesiosaurus macrocephalus_, 229. Reptiles, Prevalence of during Secondary Epoch, 201, 220. „ „ during Cretaceous Period, 285. „ „ during the Pliocene Period, 358, 366. Rhætic Strata, 180, 205, 267. Rhinoceros, 360. „ Discovery of, Entire, in Siberia, 361, 379. „ _Head of_, 360. „ tichorhinus, 360, 428. Rhombus minimus, 326. _Rhyncholites_, 181. Rio Chapura, Humidity of, 337. Ripple-marks, 15. „ on Sandstone, 173, 204, 252. River, Great, of Cretaceous Period, 279. Roc, 361. Roches moutonnées, 443, 447. Rock, in Geology, 28. Rocks composing the Earth’s Crust, 27. „ formed during the Carboniferous Limestone Period, 149. „ Crystalline, 28. Rock Salt, its Origin, 199. „ Quantity produced in England, 304. Rocking Stones, 35. Rosso Antico, 37. Rostellaria, 189. Rothliegende, 170, 174. Rudistes, 301. Runn of Cutch, 200.