INDEX. 



419 



Terebratula, 3 species, Hebrides, of which one 



is new, 368. 

 Terra di Lavoro, structure of, 351. 

 Tertiary formations exist near Madras, 387. 

 — existenceof, traced in Africa, 



388. 



Asia, 



388. 



through- 



out Europe, 388. 



marine deposits in Bengal, 393. 



strata of the London and Hampshire 



basins, evidence of original continuity of, 126. 

 not limited in their extent to 



certainhollows within the area ofthe chalk, 128. 

 on the summits of the Savoy Alps, 



127. 

 traced along the shores, and in 



the islands of the Mediterranean, 388. 

 Testaceous matter well preserved in bed of black 



bituminous shale, 238. 

 mollusca in the lias formation at Lyme 



Regis, 27. 

 Thibetian mountains, tertiary deposits at the base 



of, 394. 

 Tilgate forest, strata and organic remains of, 131. 

 Tobermory, Mull, locality of oolitic series, 361. 

 Tooth, fossil, of a fish in the East Cliff, Hastings, 



35. 

 Torre del Greco, volcanic cones above, 339. 

 Tortoise, vertebra of? in Stammerham quarries, 



104. 

 ■ freshwater, fossil remains of, in the 



valley of the Irawadi, 379, 380. 

 in the Hastings and Pur- 



beck limestone, 381. 



shire, 381. 



• Kimmeridgeclay,381. 

 - lias of Gloucester. 



clay, 381. 



- London and plastic 



-StonesfieIdoolite,381 . 



- tertiary sand rock 



of Brussels, 381. 

 Glarus, 381. 



transition slate of 



Trachyte, earthy, regular and constant columnar 



division of, Ponza, 228. 

 in rock of the Acropolis of Cumae, 



349. 



Lacco in Ischia, 349. 



225, 228. 



of the Ponza Isles, 199 tioie, 

 — Ponza, ribboned structure of the. 



345. 



prismatic, Ponza, 200. 



produced by the Salfatara, described, 



contains augite, 213. 

 siliceous, Ponza, 206. 

 varieties of, in the lavas of Ischia, 



described, 349. 



343. 



342. 

 Trachytes, the, with their conglomerates, sepa. 



rated from the graystone by horizontal strata 



of tufa, Ponza, 225. 

 Trachytes and conglomerates, conversion of, into 



pitchstone, Ponza, 228. 

 Trachytic conglomerate, change observable in, at 



its point of contact with prismatic trachyte, 



Ponza, 204. 

 of the Monte di Procida 



- semivitreous, Ponza, 203. 



- used as a building stone, 



description of, 343. 



Trafgarn : see Trap. 



Transition limestone, Jamaica, 151. 



rocks, Jamaica, 148. 



series of the Irawadi district, 388. 



Trap, between Druson-haven and Broad-haven, 6. 



dyke, remarkable, near Bewdley, 249. 



from Bolton Beacon to Benton Castle, 7. 



insulated masses of, in the vicinity of St. 



David's, 4. 



in the range from Roche to Trafgarn, 6. 



of Gouldtrop Road in St. Bride's Bay, 6. 



Marloes and Skomer Island, 8. 



rocks associated with the submedial rocks. 



Jamaica, 155. 



— varieties of, in southern Pembrokeshire, 2. 



— ofthe Rhine compared, 342, 351. 



