528 



INDEX. 



Tertiary formations of Sonthofen and the valley 



ofthelller, 329. 

 Tertiary series, between the Alps and the plains of 

 the Danube, enormously thick, 375. 



Thin-bedded limestone of the red sandstone series, 

 description of, 75. 



Thuringcrwald, same species of Palseothrissum 

 found in the marl slate of, and Durham, 77. 



Thurso, structure of the neighbourhood of, 133. 



Tigra, notice of the geology of the neighbourhood 

 of, 193. 



Tilgate, list of fossils in strata of, 213. 



Titterstone Clee Hill, notice on the basalt of the, 

 487. 



Tonse river, cataract of, formed of red sandstone, 

 193. 



Tor Bay, description of the limestone on the 

 northern side of, 165. 



, on the 



south of, 1G6. 



Tor and Babbacombe Bays, disturbance of the car- 

 boniferous limestone and old red sandstone of 

 the coast of, by trap, subsequent to the forma- 

 tion of the Exeter red conglomerate, 101, 169. 



description of the 



coast, 161. 



H. T. De la Beche, 



Esq., on the geology of, 161. 



— red conglomerate of, 



similar to that of Heavitree and Exeter, 161. 

 description of, 161. 



Transverse valleys, the direction of, probably de- 

 termined by the direction of certain lines of 

 fault, 114. 



Trap, description of, near Babbacombe, 168. 



the, of Saugor, 194, 199. 



. . Jubulpore, 199. 



near Laggan-twine Bay, 



Tor Moham, Devon, red conglomerate of, de- 

 scribed, 1 62. 

 Tornignion, Isle of Arran, account of the junction 

 of the granite and slate, 23. 



observations respecting, 



35. 

 Torquay, notice of fossils found in the limestone 



near, 164. 

 — limestone in the vicinity of, much con- 

 torted, 1G5. 

 Trachytic porphyry, notice of, in the hill of Glei- 



chenberg in Lower Styria, 399. 

 Transition rocks containing organic remains not 



wanting in the Eastern Alps, 507, 408. 

 localities at which theyoccur,306. 



:/. 



— shale converted into Lydian stone by, 27. 



— in the Isle of Arran, intrudes in every pos- 

 sible variety into the new red sandstone, 32. 



the exact age not to be 



conjectured, 35. 



. — may have been the agent 



by which the granite was elevated, 35. 



of Tor and Babbacombe Bays forced up 



after the formation of the Exeter red conglo- 

 merate, 169. 



not been discovered in the neighbourhood 



of Nice, 183. 



- — rare in the red marl on the northern flank 

 of the Eastern Alps, 308, 309 note. 



frequently associated with it on the southern, 



308. 



— dykes in Nottinghamshire, Derbyshire and 

 Yorkshire, not noticed in the overlying terrace 

 of magnesian limestone, 63. 



of Bolam, probably passes through 



both the coal measures and the magnesian lime- 

 stone, 63. 

 of the northern coal-fields, no direct 



evidence of their being of an age anterior to 

 the magnesian limestone, 63. 



Traun, section on the banks of the, 337. 



exposes phenomena in ac- 

 cordance with those in the Canal di Brenta, 341. 



Traunstein, section of beds from Siegsdorf to, 

 340. 



Trionyx, remains of a tortoise nearly allied to, 

 found in the schists of Caithness and the Ork- 

 neys, 144. 



fragments apparently of the, of Caithness 



found near Geanie's Mill, 150. 



Turbiglia, notice of the limestone of, 182. 



Turbo, cast of a shell resembling, in the magnesian 

 limestone between Marr and Hickleton, 118. 



