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INDEX.
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| Organic Impressions, a remarkable class of, in Flint | 328 |
| Paris, Basin of Description of the | 161 |
| Parkinson, Mr. J. Observations on some Specimens of Hippurite, from Sicily | 277 |
| Peak of Teneriffe, Height of the | 286 |
| ─────────── Description of an ascent to the top of the | 291 |
| Pebbles of the London Gravel | 232 |
| ───────────────── Concentric | 233 |
| Phillips, Mr. W. On the Veins of Cornwall | 110 |
| ────────── A Description of the Oxyd of Tin | 336 |
| Plasma, supposed to exist in the Island of Rum | 407 |
| ───── probably owes its colour to Chlorite | 513 |
| Plastic Clay of the South of England | 185 |
| ─────── of the Paris Basin | 200 |
| Pleasure Copper Mine, Description of | 149 |
| Plumstead, Fossils at | 223 |
| Plumbago, a substance resembling, obtained by artificial means | 24 |
| Portland Stone, Fossil Alcyonia in the | 383 |
| Porphyry, Objections to the term as commonly used | 424 |
| Portsoy, on the Granite Veins at | 432 |
| Portsmouth, Strata under | 189 |
| Prase, a variety of, found in the island of Rona | 392 |
| Prince George Copper Mine, Description of | 148 |
| Purbeck, Isle of, Freshwater Formation of the | 166 |
| Quadrupeds, Fossil Bones of, in the South of England | 244 |
| Quartz, granular, called Grey Weathers | 224 |
| Quartz Rock, found in Scotland, and on the Nature and Connexion of this Rock in general | 450 |
| ─────── its principal modifications | 453─480 |
| ─────── is a mechanical deposit | 455─482 |
| ─────── lies under primitive rocks | 456 |
| ─────── alternates with primitive rocks, | 468─470─486 |
| ─────── peculiar appearance of the mountains composed of | 468 |
| ─────── of Assynt | 458 |
| ─────── of Schihallien | 466 |
| ─────── of the District of Mar | 471 |
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