462 INDEX. 



Coal Measures, variable thickness of the beds of the . . 12 



consequent difficulty of giving a general section 13 



— » * various beds composing the, particularly detailed J 5 



dykes in the . . . . . 21 



other irregularities in the .... 29 



— sections of the ...... 31 



mineral springs occurring in . . . 51 



shattered strata of, accompanying the slate and 



greenstone rocks near Appleby .... 106 — 112 



Coal works section of, in the lead mine measures . . 69 



Conglomerate, lying on the trap at Kinnoul . . . 227 

 Conybeap.e, Rev. J. J. Memoranda relative to the porphyritic 



veins, &c. of St. Agnes in Cornwall . . . . 401 

 Notice of fossil shells in the slate of 



Tintagel . 424 



Copper, ores of, found in Northumberland and Durham . 84 



Coruisky in Sky, rocks of, described 183 



Corundum, on the primitive crystal and cleavage of . . 254 



CotJiam stone, one of the beds of the lyas . . . . 196 



Cross courses, in the mine of Huel Peever, their extent . 142 



of later formation than the metallic veins . 148 



effect of one on the killas through which it 



passes , . . . . . '-. . . . 154 



Cross Fell, one of the highest mountains in England . . 58 

 Cruachan, Dr. Mac Culloch's remarks on the mountain so called, 



in Argyleshire 117 



, difference in the porphyry rocks of, from those of 



Arran 134 



Cumberland, Geobge, Esq. Notes extracted from his commu- 

 nications on the strata in the neighbourhood of Bristol . 193 

 — On the strata at Whorlbury Camp 



in Somersetshire 216 



Account of a trap rock at Micklewood 444 



Cyanite, on the primitive crystal and cleavage of . . 253 



Dinsdale sections at 97 



Diopside, on the primitive crystal and cleavage of . . 252 



