632 
INDEX. 
MOLASSE. 
Molasse, Middle, or Marine, of Switzer¬ 
land, 223. 
-, Upper, fresh-water, of Switzerland, 
21T. 
-, term explained, 21T. 
Molliisca. See Shells. 
-, longevity of species of, 1G2. 
-of Hallstadt beds, 377. 
-, value of, in classification, 142. 
-of the Carboniferous, 435. 
Monitor of Thuringia, 463. 
Monoclinic feldspars, 501. 
Monod, flora of the Lower Molasse at, 
230. 
Mons, unconformable strata near, 95. 
Mont Blanc, talcose granite of, 568. 
-Dor, Auvergne, extinct volcanoes of, 
232. 
-, age of volcano of, 541. 
Monte Bolca, fossil fish of, 543. 
-Calvo, section of cross stratification, 
44. 
-Mario, age of volcanic deposits of, 
533. 
-Nuovo, formed 1538, 525. 
Montmartre, gypseous series of, 270. 
Monts Dome, Auvergne, extinct volcanoes, 
.495. 
Moore, Mr. C., on Rhaetic beds, 366. 
-, on Upper Trias quadrupeds, 369. 
Moraines described, 169. 
Morea, cretaceous volcanic rocks of, 544. 
Mortillet, M. de, on ice-erosion of lake- 
basins, 184. 
Morton, Dr., on age of American cretaceous 
rocks, 307. 
Mosasaurus Camper Chalk, 284. 
Mountain Limestone, fossils of the, 433- 
438. 
Mull, Isle of, leaf-bed, 247. 
Miinster, Count, on fossils of Solenhofen, 
337. 
Murchison, Sir R., on brackish-water strata 
in coal, 404. 
-, on Devonian series, 439,449, 454. 
-, on Devonian ichthyolites, 4.53. 
-, on Eocene igneous* rocks, 278. 
-, on Llandovery beds, 468. 
-, on Laurentian gneiss of Scotland, 
492. 
-, on metamorphic rocks of North High¬ 
lands, 601. 
-, on Monte Bolca fish-beds, 543. 
-, on name Permian, 385. 
-, on Old Red Sandstone, 449. 
-, on Palaeozoic strata, Queenaig, 112, 
113. 
-, on protrusion of solid granite, 574. 
-, on Silurian, 458, 459,461, 467, 470, 473, 
475. 
-, on Tertiary volcanic rocks of Italy, 
533. 
-, on thickness of chalk in Russia, 287. 
-, on thickness of the Trias, 369. 
-, on the Upper “ Old Red,” 468. 
MurchUonia gracilis, 479. 
Mur ex vagmatus, 204. 
Mnschelkalk, fossils of the, 378. 
Muscovite, or common mica, 499, 501. 
Musk-ox, fossil, in Thames valley, 161. 
Myliobates Edwardsi, Bracklesham, 261. 
Mijtilus septifer, Permian, 387. 
OBOLU8 APOLLIISIS. 
NAPLES, Postpliocene volcanic rocks of, 
525. 
-, escape of carbonic acid near, 604. 
Natica clausa, Scotch drift, 176. 
- helicoides, Chillesford beds, 192. 
Natrolite, 500. 
Nautili^ centralis, London Clay, 266. 
- Danicus, Faxoe Chalk, 286. 
- plicatus, Hythe beds, 309. 
- truncatus. Lias, 356. 
- ziczac {Aturia ziczac), 266. 
Nebraska, Miocene strata of, 248. 
Necker, M., on “underlying” igneous 
rocks, 562. 
-, on dikes in Vesuvius, 526. 
Neocomian, Upper, 308. 
-, Middle, 312. 
-, Lower, 312. 
-, use of the term, 282. 
Neolithic era, 147. 
Neozoic type of corals, 431. 
Nerincea Goodhallii, Coral Rag, 339. 
Nerinsean limestone, 340. 
Nerita conoidea (xV. Schmidellia7ia), 275. 
- costulata, Great Oolite, 345. 
- granulosa, 55. 
Nei'iiina concava, Headon, 255. 
- globulus, 55. 
Neufchatel, coins and iron tools in lake of, 
149. 
Newberry, Dr., on flora of American creta¬ 
ceous rocks, 307. 
Newcastle coal-field, faults in, 90. 
Newfoundland bank described, 106. 
New Jersey, mastodon in, 183. 
New Madrid, “Sunk Country” in, 402. 
New Red Sandstone of Connecticut Valley, 
381. 
-, trappean rocks of the, 545. 
New York, Devonian strata of, 456. 
-, Cambrian strata of, 490. 
-, Silurian strata of, 478. 
-, Laurentian strata of, 491. 
Niagara Limestone, fossils of the, 479. 
Nidau, iron tools in lake of, 148. 
Nile, homogeneous mud of the, 154. 
Ninety-fathom dike in coal, 90. 
Nipadites ellipticus, Sheppey, 264. 
Nodules in strata, how formed, 63. 
Noeggerathia cuneifolia, Permian, 393. 
Nomenclature of rocks, 140. 
-of volcanic minerals, 499. 
Norfolk cliffs, drift of, 190. 
North America. See America. 
Norway, Cambrian of, 489. 
-, foliation of crystalline schists in, 
595. 
-, granite veins in gneiss of, 573. 
-, granite altering fossiliferous Strata 
in, 581. 
Norwich, or Fluvio-marine crag, 193. 
Nova Scotia coal-measures, 409. 
-coal, reptiles and shells in, 414. 
-, folding and denudation of beds in, 
417. 
Nucula Cobboldim, Crag, 194. 
Nummulites Icevigata, Bracklesham, 260. 
- Puschi, Pyrenees, 278. 
- variolaria, Bracklesham, 259. 
Nummulitic formations, 277. 
OBOLUS Apollmis, in Russian grit, 478. 
