INDEX. 419 



PAGE 



Potter's Clatj in Hampshire 253 



Primitive Rocks of Cornzvall ; heights which indicate the line of 



superposition of the secondary rocks on the 182 



Pumice, beds of in the Island of Madeira 396 



containing veins of carbonate of lime and zeolite 396 



Pyrites produced from the decomposition of sulphate of iron by- 

 animal matter 400 

 Qiiarries near Exeter, account of the 99 

 Quartz-Grit of Shropshire 208 

 Quartz, Granular, of the Malvern Hills 302 

 Quartz-Rock, Conical Mountains in the vicinity of Dublin, com- 

 posed of 271 

 Quartzose Loose Sand, Formation of, in the Isle of Wight 252 

 Resinous flatter found in the blue clay stratum of Highgate Hill 339 

 Rock Sail District of Cheshire, Mr. Holland's sketch of the, 38 — 

 general situation, thickness, &c. of the beds of, 45 — account 

 of the strata of the, 49, 62 — ^interior character of the beds of, 52 

 — considerations on the origin of 57 

 Saint Michael's Mount in Cornwall, description of 142 

 Salt, White, Manufacture of in- Cheshire 43 

 Sand si one-hills in Cheshire 39 

 Schorl Rock of Cornwall 125, 151 

 Sercq, Island of, Dr. Mac CuUoch's description of 13 

 Serf entine Formation o^ CovnviTiW 128 



general remarks on, by Dr. Berger 131 



Shepcif, Isle of, account of the Fossil remains found there 337 



Shropshire, Great Coal-Field of, Mr. Aikin's observations on 191 



Sienite of Guernsey, 11 — of Sercq, 16 — of Jersey, 21 — of the 



Malvern Hills 294 



Slate CUuj in Shropshire 207 



Soap Rock of Cornwall 130, 136 



Steatite, various kinds of, in Sercq J8 



Steatitical Vein in Sercq 1 7 



Sulphate of Iron, Mr. Pepys on the decomposition of, by animal 



matter o9d 



Sulphur or "Souffriere" of the Island of Montserrat, Dr. Nugent's 



account of the 185 



Talcose Slate, bed of in Cornwall 128 



