INDEX. 



549 



J'AGS 



Clay-slate, alternating with Graywacke . . . 442 — 447 



Clovelli/, North Devon, Memoranda relative to ♦ . , 495 



Coal, on the Composition of ...... 14 



on the Origin of ....... 20 



Strata, remarkable position of, at Bradford . . . 283 



Coalfield at Bradford, account of the , . . . . 282 



Coluccll Bay, Fossil Oyster Shells at . . . . . 216 



Columnar Structure of the Syenite of Ailsa Craig . . 419 

 CoNYBEAREj the Rev. W. On the Origin of a remarkable Class of 



Organic Impressions occurring in Nodules of Flint . 328 



CoNYBEARE, the Rev. J. J. Memoranda relative to Cloveily . 495 



Co7itortions in Mica Slate, Basalt, Veins of Graoite and Quartz 438 



Corfe Castle, Clay Pits near . . ... . . 186 



CornuoaU, on the Granite Tors of ..... G6 



on the Veins of ...... 110- 



on the Economy of the Mines of ... 309 



on the Oxyd of Tin found in ... . 336 



Country, meaning of the term as used by the Cornish Miners 113 



Nature of in Cornwall, where different Veins occur 13.1 



CdTi't'S, Isle of Wight, Strata at . . . . . 211 — 212 



Crag Pits in Suffolk . . . . . . . . 218 



Crflig P/?«f?/fc, Vitrified Fort on the Hill of .... 270 



Crinan Harbour, Rocks in the Neighbourhood of . . 441 



Cross Courses, or North and South Veins, in Cornwall . , 133 



Crystallization from vaporized Minerals .... 276 



■ Observations on some Phenomena of 431, 432, 437, 514 



C/^/i'i.'/' CZ//f, Isle of Wight 1G3 



Devar, near Caropbelltown, Porphyry of .... 423 



Devonshire, on the Economy of the Mines of . . . 309 



Divining Rod, still used in Cornwall ..... 124 



Dorsetshire, Chalk Hills of 170 



Drannack Copper Mine in Cornwall, description of . . 146 



Driag, in Cumberland, Vitreous Tubes found near . . 528 



Droinvich, Account of the Brine Springs at . . . 94i 



Droylsdcn, Coaificld of 2S3 



Dunglas, Agates of, containing Vegetable Remains . . 510 



