INDEX. 



801 



Table of fossil mammalia older than Paris gyp- 

 sum, 38T. 



of fossiliferons strata, 101. 



of Permian strata, 458. 



Tabular view of fossiliferous strata, 102. 



Tails of homocercal and heterocercal fish, 

 461. 



Talcose granite, 70S. 



gneiss, 736. 



gneiss granite veins, 713. 



schist, 736. 



Tarannon shale, thickness of, 560. 



Tartaret, cone and lava-current of, 638. 



Teeth of extinct mammalia, 133-135. 



Teleostei, term explained, 534. 



Tellina obliqua, Norwich crag, 197. 



proximo., Scotch drift, 154. • 



Temnechinus excavatus, Coralline crag, 204. 



Temnopleurus excavatus, 204 



Teneriffe, view of Peak of, 614 



Tentaculites annulatus, Silurian, 561. 



Tephrine, 607. 



Terebellum sopita {Sera2>hs convolution), 

 2S7. 



■ fusiforme, Barton, 2S7. 



Terebraiula porrecta, 539. 



digona, Bradford clay, 405. 



■ sella, 341. 



camea, White Chalk, 327. 



fimbria, Inferior Oolite, 412. 



hastaia, 518. 



Wilsoni, Aymestry, 554. 



Terebraiula blplicata, Cretaceous, 327. 

 Terebratulina striata, White Chalk, 327. 

 Terebrirostra lyra, 331. 



Teredina personata, fossil wood bored by, 



24 

 Teredo navalis boring wood, 24. 

 Tertiary formations, classification of, 178. 

 — — term defined, 1S2. 



■ of Paris, 297. 



volcanic rocks of Auvergne, 637. 



Termites of (Eningen, 257. 



Terra del Fuego, clay slates of, 755. 



Testacea of plastic clays, 295, 296. 



Tete d'Homme, Andelys, 354, 355. 



Texas, chalk in, 340. 



Thallogens, term explained, 333. 



Thamnastraia, Coral-rag, 398. 



Thanet sands, 297. 



Thecodontosaurus, tooth of, 447. 



Thecosmilia annularis, Coral-rag, 398. 



Thelodus, shagreen scales of placoid fish, 



552. 

 Thickness of Laurentian rocks, 5S3. 

 Thirria, M., on Oolitic group, 429. 

 Thompson, Dr., on nummulites of Thibet, 



303. 

 Thurmann, M., on anticlinal ridges of Jura, 



366. 



cited, 55. 



on Bernese Jura Oolite, 404 



Thylacotheriwm Prevostii, Valenc, 407. 



Tilestones of Silurian strata, 551. 



Tilgate Forest, remains in, 349. 



Till, described, 137. 



Tin, whence obtained by ancients, 112. 



veins, age of, 780. 



Toadstone, 607. 



Tongrian of Dumont, 237, 23S. 



Torelh Dr. Otto, on icebergs, 144. 



Touraine, faluns of, 213. 



Tourhouer, It, on Lower Miocene shells, 232. 



Trachyte, 599, 607. 



porphyry, 599. 



Trachytic lava, age of, 657. 



tuffs of Madeira, 653. 



Transition, term explained, 88. 



Transverse valleys, 362. 



Trap, term explained, 592. 



between limestone and shale, Durham, 



616. 



dike, intercepting strata covered with 



alluvium, 621. 



51 



Trap dikes, 609. 



intrusion of, between strata, 616. 



of New Eed Sandstone period, 696. 



passage of granite into, 70S. 



relation of, to active volcanic products, 



620. 



rocks, name and origin of, 592. 



spheroidal, of Madeira, 653. 



tuff, 602, 607. 



veins in Airdnamurchan, 610. 



Trappean rocks, 88. 



relation to lava, 620. 



Trass of Lower Eifel, 6S2. 



term explained, 607. 



Travertin, how deposited, 34. 



inferieur, 302. 



Tree-fern from Brazil. 469. 



from Isle of Bourbon, 469. 



Tree, fossil, oblique in Coal, 483, 486. 

 Trees, erect, in Coal, 479, 4S2. 

 Tremadoc slates, fossils of, 776. 

 Trenton limestone, fossils of, 571. 

 Trezza, beds of clay and lava at, 658. 

 Trias of United States, 451. 



nomenclature of, 432. 



in Cheshire and Lancashire, 443. 



subdivisions of, 432. 



Triassic group in England, 440. 

 Triconodon in Middle Purbeck, 385. 

 Trigonellites latus, Kimmeridge clay, 395. 

 Trigonia caudata, 344. 



gibbosa, Portland-stone, 394. 



Trigonocarpum ovatum, 477; T. olivaiforme, 



477. 

 Trigonotreta imdulaia, 460. 

 Trilobites of primordial zone, 5S0. 



in Devonian strata, 537. 



in Cambrian, 574 



. metamorphosis of, 5S0. 



Triloculina inflata, Eocene, 304. 



Trimmer, Mr., on shells of Moel Tryfaen, 



153. 



on contorted strata, 157. 



on sand-galls, 82. 



Trinucleus concentricus (T, ornatus), TH- 



nucleus Caractaei, 563. 

 Trionyx, carapace of, Bembridge, 282. 

 Tripoli composed of Diatomacese, 24. 

 Tristram, M., on submergence of Sahara, 



176. 

 Trodioceras giganteus, Silurian, 555. 

 Trophon clathratum, Clyde drift, 153. 

 Tuffs of Ischia, 189. 



volcanic and trap, 6, 602. 



of Lower Llandeilo, 567. 



- — described, 607. 



Tuomey, Mr., on burr-stone strata, 312. 



Tupaia Tana, Oolite, 408. 



Turner, Dr., on chemical decomposition, 41; 



42. 

 Turrilites costatus, Chalk, 326. 

 Turritella multisulcata, 290. 

 Tuscany, springs from spent volcanoes, 766. 



Older Pliocene volcanic rocks of, 673. 



Tyndall, Dr., on slate cleavage, 752. 



Tynedale fault, 64. 



Tynemouth cliff, limestone at, 459. 



Tyrol, junction of plutonic rocks with Oolitic 



strata, 724. 

 Typhis pungens, Barton clay, 287. 



TJncontoemable stratification, 60, 61. 

 Underlying, term applied to granite, 7. 

 Unger, Prof., on Planera Eichardi, 266. 



on Miocene Atlantis, 269. 



on Miocene plants of Croatia, 245. ' 



— — on Swiss Miocene, 248, 256. 

 Ungulite or Obolus grit of Russia, 569. 

 Unio littoralis (recent), 28. 



■ Valdensis, 350. 



United States, Eocene strata in, 309. 



Cambrian strata of, 581. 



cretaceous rocks of, 338. 



coal-fields of, 496. 



