INDEX. 



443 



Chalk, lower, fossils of, in Norfolk/378. 



section of, procured in boring at Mildenhall 



in Suffolk, 380. 



specimen of, from Bencoolen, 405. 



flints, on a substance contained in, 422. 



Chama Gigas found on the hills in Pulo Nias, 404. 



Charfield-green, on the Avon, beds of trap parallel 

 to strata of transition rocks at, 333. 



Charmouth in Dorsetshire, tusk of an elephant 

 from diluvium near, 421. 



Chert, 58. 



in limestone, 16. 



containing chalcedony, 41. 



in dolomitic conglomerate, 294. 



Chew Magna, new red sandstone at, 298. 



cellular variety of new red sandstone 



at, 298. 



Chewstoke, new red sandstone at, 298. 



Chili, ancient beaches on the coast of, parallel to 

 the present sea beach, 415. 



Chlorite, varieties of, in Glen Tilt, 70. 



Chobham, green clay of Bagshot sand at, resem- 

 bling that of Menil Montant, 5 1 . 



Chondrolite in Pargas, 4. 



Clan Down, near Radstock, deep shaft at, sunk 

 through the overlying beds to the coal, 250. 263. 



Clapton, village of, in Bristol coal field, 239. 251. 

 256. 



Clathraria anomala, fossil plant described, 422. 



Clay, red, from decomposition of granite in Fin- 

 land, 6. 



black, with organic remains, ammonites, &c. 



30. 



black, 31. 



Clay-iron stone, called reddle, pigment obtained 

 from, 368. 



Clay-stone porphyry at Jhodepoor in India, 150. 



Cleve or Gobble Combe, defile of, 236. 



Clifton, defile of the Avon at, 258. 



Coal, 35. 



quantity of, worked in the Bristol coal ba- 

 sin, as compared with other English coal fields, 

 263. 



prospect of future supply of, from do., 263. 



Coal district, south-western, of England, occupied 



by two great and distinct series of rocks, 210, 



211. 

 ' ■ difference 



in the inclination of the strata in each series, 



212. 

 • extent and 



local distribution of the first series, 213. 

 disposition 



of the strata into basins, 213. 



the coal basin of Bristol, 214. 



boundary of 



•boundary of 



the coal basin of the Forest of Dean, 215. 

 eastern 



boundary of the great coal basin of South Wales, 



216. 

 ' extent and 



distribution of the rock formations of the second 



series, 217. 

 on the coal 



basin of Bristol, 220 — 280 : see also Bristol 



coal basin. 

 — on the coal 



district of the Forest of Dean, 280 — 290 : see 

 also Forest of Dean coal district. 



- on the over- 

 lying strata, 290—307. 



^— — — on the di- 

 luvial and alluvial deposits, 307 — 3 11. 



Appendix I . 



on some early geologists, who have noticed the 

 south-western coal district, 312 — 314. 



■ ■ Appendix 2. 



on red sandstone, 314 — 316. 



— field of Bedminster in Somersetshire, 366. 



— formation, in the environs of Tortworth, 

 345, 



— measures of the Bristol coal basin, 249. 

 of the Bristol coal field, principal 



subdivisions of, 252. 

 unexplored in the valley of the 



Severn, 247. 264. 

 sections of, in Bristol coal basin. 



-^district, south-western, of England, observa- 264 — 280. 



tions on, by Rev. W. Buckland and Rev. W. D. 

 Conybeare, 210. 



— in the Forest of Dean, 288. 



shale, with vegetable impressions, 253. 



