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INDEX. 



Coalbrook Dale, description of new red sand- 

 stone of, 447. 

 • rocks of igne- 



ous origin, 449. 



= diluvium or 



drift of, 460. 



remarks on the nature and ef- 

 fects of the disturbances of, 452, 472. 



on the alternations of 



marine, fluviatile and fresh- water remains in the 

 coal measures of, 464. 

 conclusions de- 



Clare, account of mines in old red sandstone, 60. 



carboniferous lime- 

 stone 64, 65 note. 



■ height of hills in the county of, 6. 



notice of the diluvial clay at, 375. 



Clarke, Rev. W. B. on the geological structure 

 and phaenomena of Suffolk and its physical re- 

 lations with Norfolk and Essex, 359. 



Claydon, depth of chalk pit at, 380. 



Clay-slate, south of Ireland, notices of, 7, 12. 



Cliffs, destruction of, on the coast of Suffolk, 



Cloughton Wyke and White Nab, section of great 

 oolite at, 231, 237. 



. of the lower coal series at, 237. 



Coal, account of, in the Brown Clee Hill, 125. 



Cutch, 293. 



remarks on the question whether its vege- 

 table remains grew where found, or have been 

 drifted, 463. 



said to be found at Perce, 102. 



Coal-shafts, sections of, in the Coalbrook-dale- 

 field, 475 et seq. 



Coalbrook Dale, Mr. Prestwich on the geology Coal-field, notes to accompany a Geological Map 

 of, 413. of the Forest of Dean, 195. 



extent and physical features of Coal measures, account of, in the north-east of 



the district, 415. Antrim, 74. 



description of theSilurian rocks 



duced from, 468. 



on the changes in the 



lithological characters and organic remains in 

 the horizontal range of the coal measures, 468. 



nature of the 



agents which have modified the surface of the 

 coal-field, 473. 

 conclusions drawn from the 



phaenomena presented by the coal-field of, 463. 

 systematic list of fossils from. 



488. 



of, 41 f 



in Clare, 56. 



in Coalbrook Dale, 



stone of, 424. 



limestone of, 424. 



of, 428. See also coal measures, 



old red sand- 

 carboniferous 

 coal measures 

 theirpro- 

 probable 



428. 



number of strata 



and depth in different parts of the field, 429. 

 list of coal seams 



and their aggregate thickness, 435. 

 thickness of strata 



bable geological position, 471. 



origin of debris composing the, 469. 

 -' probable 



extension of, beneath the new red sandstone, 



472. 

 probable 



origin of the ironstone contained in the, 470. 

 list of 



minerals found in, 487. 



between penneystone and clod coal, 431. 

 thickness of the 



penneystone measure, 431. 



great variations in 



thickness, and composition of the strata, 431. 

 notice of the bed 



of fresh-water limestone, 434. 



racters of, 43^ 



coal seams, cha- 

 ~ proxi- 



mate analysis of, 436 note. 



