INDEX. 
631 
MAMMALIA. 
Mammalia and testacea, comparative lon¬ 
gevity of, 162. 
Mammoth, rude carving of in Perigord 
cave, 150. 
-in Scotch till, 1T5. 
-. See Elephas primigeniiis. 
Man, antiquity of, 152. 
Manfredi on amount of suhaerial denuda¬ 
tion, 114. 
Mantell, Dr., on iguanodon of Wealden, 
813. 
-, on Oxford Clay belemnites, 340. 
--, on Wealden fossils, 316. 
Mantellia nidiformis, Purbeck, 331. 
Map of Chalk formation in France, 305. 
-of Eocene tertiary basins, 250. 
-of Hallstadt and St. Cassian beds, 3T6. 
Marble defined, 37. 
-of Carrara, metamorphic, 599. 
Marcou, M., on age of Wealden beds, 319. 
Margaric acid, 591. 
Marine fauna of the Carboniferous, 432. 
- beds underlying the London clay, 
269. 
- and brackish-water strata in coal, 
'404. 
-strata, how distinguished from fresh¬ 
water, 53-59. 
Marl from Lake Superior, 63. 
-and marl-slate defined, 38. 
-, red, green, and white, of Auvergne, 
233. 
-slate of Middle Permian, 387. 
Marsupials, extinct, of Australia, 159. 
Marmpites Milleri, White Chalk, 294. 
Massachusetts, plumbago of, 583. 
Mastodon arvernensis, molar of, Norwich 
crag, 193. 
- qiga^iteus, in United States after the 
drift, 183. 
Mayence basin tertiaries, 242. 
May-Hill Sandstone, 468. 
Mechanical and chemical deposits, 60. 
-theory of cleavage, 592. 
Mediterranean, one zoological province, 
127. 
Megalodon cucullatus, Devonian, 452. 
Melania inquinata {Cerithium melanoides), 
55, 268. 
Melania turritissima, Bembridge, 253. 
Melanopsis buccmoidea, 55. 
Melaphyre, a variety of basalt, 504. 
Menevian beds and their fossils, 484. 
Mesozoic, term explained, 123. 
-and Cainozoic periods, gap between 
the, 282. 
-and Palaeozoic rocks, limits of the, 
385. 
Met^fls, relative age of different, 614. 
Metamorphic limestone, 579. 
-strata, origin of, 579. 
-theory, objections to, considered, 587. 
-rocks defined, 32. 
-rocks, 576. 
-, cleavage of, 588. 
-, scarcity of lime in, 604. 
-, ages of, 597. 
-, order of succession of, 602. 
-, uniformity of mineral character 
in, 602. 
Metamorphism, Hydrothermal action pro¬ 
ducing, 584. 
MOLASSE. 
Metamorphosis of trilobites, 471, 487, 
Meteorites, minerals in, 501. 
Mexico, Gulf of, terrestrial remains wash¬ 
ed into, 128. 
Meyer, Mr. Karl, on fossil shells of Madei¬ 
ra, 537. 
-, M. H. von, on reptiles in coal, 407. 
-, on Wealden of Germany, 319. 
Miascite, 558. 
Mica and its varieties, 499, 501. 
-, how deposited, 40. 
—^ schist or micaceous schist, 578. 
Micaceous sandstone, origin of, 36. 
Micraster cor-anguinum, 294. 
Microconchus carbonarius, coal-measiir 
405. 
Microlestes antiquus, Upper Trias, 368. 
Migrations of quadrupeds, 161. 
Miliolite limestone, 274. 
Miller, Hugh, on Old Red Sandstone fish, 
443. 
-, on salt lakes, 375. 
Milne Edwards, Mr., on Palaeozoic corals, 
432. 
Minchinhampton, Great Oolite of, 344. 
Mineral composition a test of age of vol¬ 
canic rocks, 523. 
-a test of age of plutonic rocks, .565. 
-a test of age of strata, 124. 
-character of hypogene rocks, 602. 
-springs of Auvergne, 604. 
-veins, 605. 
-formed in fissures, 606. 
-, successive formation of, 609. 
-, swelling and contraction of, 611. 
-, relative age of, 614. 
-, pebbles in, 608. 
Mineralization of organic remains, 65. 
Minerals in meteorites, 501. 
-, table of the most abundant in hypo- 
gene rocks, 499. 
Miocene of Bordeaux and south of France, 
214. 
- and Eocene, line between the, 230, 
251. 
-, Lower, of England, 244. 
-, Lower, of Germany and Croatia, 242. 
-, Lower, of Central France, 231. 
-, Lower, of Italy, 244. 
-, Lower, of Nebraska, United States, 
248. 
-, terra defined, 143. 
-, Upper, of the Bolderberg, 224. 
-, Upper, of France, 211. 
-, Upper, of Italy, 226. 
-, Upper, of Greece, 226. 
-, Upper, of India, 226. 
-, Upper, of Vienna basin, 224. 
Mississippi, sediment of, used as a test of 
denudation by rivers, 114. 
-valley, deposition and denudation in 
the, 102. 
Mitchell, Mr., on Aralia fruit in Alum Bay, 
Eocene, 263. 
-, Sir T., on Wellington caves, 158. 
-, Rev. Hugh, on Pteraspis, 446. 
Mitra Scabra, Barton clay, 259. 
Mitscherlich, on Isomorphism, 502. 
Modiola acuminata, Permian, 387. 
Moel Tryfaen, shells found at, 181. 
Mohs on isomorphism, 502. 
Molasse, Lower, of Switzerland, 235. 
