# Transactions of the Geological Society, 1st series, vol. 2/Index

INDEX
| | page |
| Aberfoyle, on the Rocks in the Neighbourhood of | 446 |
| Adits, in the mining District of Cornwall | 129 |
| Ailsa Craig, Mineralogical Observations on | 417 |
| Alcyonia, Fossil, on some new Varoieties of | 377 |
| ──────────── Strata in which they are found | 384 |
| ──────────── of Purbeck, Weymouth and Portland | 385 |
| Alluvial Depositions of Tin in Cornwall | 342 |
| ───────────── above the Basalt of Staffa | 506 |
| ───────────── around London | 231 |
| ──────────────────────, Fossils found in the | 241 |
| Alum Bay, in the Isle of Wight, description of | 181 |
| Alumine, Sub-sulphat of, found at Newhaven in Sussex | 191 |
| Amworth, Vitrified Fort of | 272 |
| Amygdaloid of the Isle of Man | 45 |
| ────── of Burnt-Island, remarkable Vein in the | 440 |
| Appin, District of, Quartz Rock in the | 473 |
| Artsaig, District of, Quartz Rock in the | 473 |
| Arran, Island of, Observations on the Granite of Goatfield in the | 426 |
| Assynt, District of, Mineralogical Observations on the | 408 |
| ────── Limestone of the | 408 |
| ────── Quartz Rock of the | 458 |
| Augite, Rock composed of, with Felspar, in the Island of Rum | 402 |
| Bagshot Heath, Sand of | 224 |
| Bakewell, Mr. R. An account of the Coalfield at Bradford near Manchester | 282 |
| Basalt of Raasa, Contortions of the | 439 |
| ───── of Staffa, Different varieties of the | 502 |
| Basaltic, Columnar, forms of the Lava of Teneriffe | 290 |
| Basin, Hampshire or Isle of Wight, extent of the | 170 |
| ───── London, extent of the | 171 |
| ───── Paris, description of the | 161 |
| Beachey Head, Strata at | 192 |
| Bell-metal Ore, a Sulphuret of Tin found in Cornwall | 343 ​ |
| Bennet, the Hon. H. G. Some account of the Island of Teneriffe | 286 |
| Berger, Dr. Mineralogical account of the Isle of Man | 29 |
| Binstead, Isle of Wight, Strata at | 212 |
| Bistre, on the nature of | 27 |
| Bitumens, Analogy between these and certain Products obtained in the Distillation of Wood | 8 |
| Bognor, Rocks at | 190—208 |
| Bogs, Account of the black matter deposited in | 24 |
| Boharm, Mineralogical Observations on the Neighbourhood of | 430 |
| Bowlders, Observations on the Formation of | 71—78 |
| Bradford, Coalfield of, account of the | 282 |
| Brentford, Strata at | 108 |
| Brighton, Cliffs at | 176 |
| Brine Springs at Droitwich, account of the | 94 |
| Bromley, Strata at | 196 |
| Burnt-Island, Compound Vein of Limestone and Basalt, traversing the Amygdaloid at | 440 |
| Calbourne, Isle of Wight, Quarries at | 228 |
| Calcaire Grossier, in the Paris Basin | 201 |
| Chabasite of Staffa | 504 |
| Chalcedony, Vegetable Remains preserved in | 510 |
| ──────── Green, of the Island of Rum | 403 |
| Chalk, on the Strata lying over the | 161 |
| ───── of the South of England | 173 |
| ───── without flints, 174—with flints, 174—Grey, 174—hard and soft, 174—of France, | 175 |
| Chalk Marl, in the South of England | 173 |
| Cheese Wring, one of the Granite Tors of Cornwall, described | 69 |
| Chlorite, peculiar forms of, in Chalcedony | 512 |
| Chlorophane, found in Cornwall | 344 |
| Chrysalis of a lepidopterous Insect inclosed in Chalcedony | 527 |
| Clay, Plastic, above the Chalk in England | 166 |
| —London, description of the | 187 |
| Clay Porphyry, Vein of, near St. Davidis | 88 |
| Clay-slate of the Isle of Man | 37 |
| ───── Remarkable variety of | 431 ​ |
| Clay-slate, alternating with Graywacke | 442—447 |
| Clovelly, 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 |
| Colwell Bay, Fossil Oyster Shells at | 216 |
| Columnar Structure of the Syenite of Ailsa Craig | 419 |
| Conybeare, 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 Clovelly | 495 |
| Contortions in Mica Slate, Basalt, Veins of Granite and Quartz | 438 |
| Corfe Castle, Clay Pits near | 186 |
| Cornwall, on the Granite Tors of | 66 |
| ─────── 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 | 131 |
| Cowes, Isle of Wight, Strata at | 211—212 |
| Crag Pits in Suffolk | 218 |
| Craig Phadric, 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 |
| Culver Cliff, Isle of Wight | 163 |
| Devar, near Campbelltown, 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 |
| Drigg, in Cumberland, Vitreous Tubes found near | 528 |
| Droitwich, Account of the Brine Springs at | 94 |
| Droylsden, Coalfield of | 283 |
| Dunglas, Agates of, containing Vegetable Remains | 510 ​ |
| Dun Mac Sniochain, Vitrified Fort of the Hill of | 257 |
| ————————— Mineralogical Examination of | 262 |
| Egg, Island of Mineralogical Observations on the | 407 |
| Englefield, Sir Henry, Observations on the Chalk of the Isle of Wight | 163 |
| Fancy Copper Mine, Description of | 149 |
| Fluor, some remarkable Varieties of | 345 |
| Fossil, Organic Remains, in Chalk | 178 |
| ——————————— in the lower Marine Formation above the Chalk | 204 |
| ——————————— in the lower Freshwater Formation | 210 |
| ——————————— in the upper Marine Formation above the Chalk | 219 |
| ——————————— in the upper Freshwater Formation | 229 |
| ——————————— in the Alluvium around London | 241 |
| ——————————— Siliceous, at Feversham | 195 |
| ——————————— of Hippurites | 277 |
| ——————————— Remarkable Class of in Flint | 328 |
| ——————————— of some new Varieties of Alcyonia | 377 |
| Freshwater Formation in the Isle of Wight, Lower | 210 |
| —————————————————— Upper | 226 |
| —————————— in the Basin of Paris | 214 |
| —————————— Conjectures respecting the Origin of | 248 |
| Garnet Rock in the Isle of Man | 48 |
| Gatacre House, Vitrified Wall of | 273 |
| Globular Siliceous Rock in the Shiant Isles and in Sky | 396 |
| Gold found in Cornwall | 342 |
| Goniometer of Dr. Wollaston, great utility of the | 346 |
| Granite, of the Isle of Man, containing Galena | 36 |
| ——— of the Island of Arran, not stratified | 427 |
| ————————————— Magnetic | 430 |
| ——— of Labrador, containing Garnets | 491 |
| ——— on the Decomposition of and its Disposition to split into blocks | 70 ​ |
| Granite Graphic, of Rona | 391 |
| ────────── Hutton's Theory of, objected to | 432 |
| ──── Veins of, at Portsoy, Observations on the | 433 |
| ────────── Contortions of | 439 |
| ──── Tors of, in Cornwall, Remarks on the | 66 |
| Gravel around London, Remarks on the | 231 |
| Graywacke, of the Isle of Man | 39 |
| ─────── of Aberfoyle | 447 |
| ─────── of Clovelly, Contortions in the | 497 |
| ─────── alternating with Clay Slate | 442—447 |
| ─────── Observations on the term | 93—444 |
| Greenstone Porphyry, near St. David's | 86 |
| Greenstone, Observations on the term | 393 |
| Green Sandstone Stratum, in the Isle of Wight | 382 |
| Grey Weathers, Description of the | 224 |
| Gypsum accompanies the Salt Springs at Droitwich | 95 |
| ────── of the Isle of Purbeck | 166 |
| ────── of Newhaven, in Sussex | 191 |
| ────── of the Paris Basin | 214 |
| Hall, sir James, Observations on his Experiments on the Action of Heat modified by Compression, on Vegetable Matter | 20 |
| Hampstead Heath, Sand of | 224 |
| Headon Hill, Isle of Wight, Description of | 184 |
| Heat, modified by Compression, its Action on Vegetable Matter | 21 |
| ──── Effect of, on the Rocks at the Vitrified Fort of Dun Mac Sniochain | 266 |
| Heliotrope of the Island of Rum | 408 |
| Herland Copper Mine, Description of | 146 |
| ───────────── North, Description of | 149 |
| Hertfordshire Pudding Stone, Description of the | 225 |
| Highgate Hill, Account of the Strata of | 197 |
| Hippurites, Observations on some Specimens of | 277 |
| Hogs-Back, near Guildford, Description of the Chalk of the | 172 |
| Hordwell Cliffs, Fossils of | 189 |
| Horner, Mr. L. Account of the Brine Springs at Droitwich | 94 |
| Hornblende and Felspar, Rocks near St. David's composed of, and peculiarity of their Structure | 80—83—89 ​ |
| Hornstone of the Shiant Isles | 395 |
| ─────── Observations on the term | 396 |
| Huel Alfred Copper Mine, Description of | 157 |
| Huel Jewel Mine, Description of some of the Veins in | 155 |
| Huel Damsel Mine, Description of some of the Veins in | 155 |
| Hutton's Theory of Graphic Granite objected to | 432 |
| Isla, Island of, Mineralogical Observations on the | 413 |
| Isle of Man, Mineralogical Account of the | 29 |
| Isle of Sheppey, Description of the | 192 |
| Isle of Wight, On the Freshwater Formations in the | 161 |
| ──────── Basin of the | 170 |
| ──────── Some new varieties of Alcyonia found in the | 377 |
| Jura, Island of, Mineralogical Observations on the | 450 |
| Kentish Rag, Description of the | 166 |
| Kidd, Dr. Notes on the Mineralogy of the Neighbourhood of St. David's, Pembrokeshire | 79 |
| Killas, the term, an improper substitute for Graywacke | 446 |
| ──── of Cornwall, Observations on the | 499 |
| Killin, Mineralogical Observations in the Neighbourhood of | 437 |
| Kimmeridge Coal, the bed containing it | 167 |
| Labrador, on the Geology of the Coast of | 488 |
| ────── Felspar, Locality of | 492 |
| ────── Hornblende, Locality of | 493 |
| Lapis Ollaris, found in Labrador | 491 |
| Lava, peculiar Species of, in the Island of Teneriffe | 303 |
| Lead Mines of the Isle of Man | 50 |
| Lead Mine of Tyndrum | 479 |
| Lightning supposed to have vitrified Sand | 531 |
| Lignites, on the Nature of | 17 |
| Limestone of the Isle of Man | 41 |
| ────── of the District of Assynt | 408 |
| ────── of Isla, not a Floetz Limestone | 416 |
| ────── of Loch Laggan, containing Hornblende | 435 |
| Lode, Etymology of | 110 ​ |
| Loch Laggan, Limestone of | 435 |
| Loch Lomond, Contortions in the Mica Slate at | 438 |
| Logging Rock of Cornwall, Description of the | 67 |
| London Clay, Description of the | 187 |
| London Gravel, Remarks on the | 231 |
| Lorn, Puddingstone of | 264 |
| Mac Culloch, Dr. On certain products obtained in the Distillation of Wood, with some account of Bituminous Substances and Remarks on Coal | 1 |
| ─────────── On the Granite Tors of Cornwall | 60 |
| ─────────── Remarks on the vitrified Forts of Scotland | 235 |
| ─────────── On the Sublimation of Silica | 275 |
| ─────────── On the Junction of Trap and Sandstone at Stirling Castle | 305 |
| ─────────── Miscellaneous Remarks accompanying a Catalogue of Specimens | 383 |
| ─────────── Remarks on several parts of Scotland which exhibit Quartz Rock, and on the nature and connexion of this Rock in general | 450 |
| ─────────── On Staffa | 501 |
| ─────────── On Vegetable remains preserved in Chalcedony | 510 |
| Macles of Oxyd of Tin | 366 |
| Magnesian Limestone of the Isle of Man | 43 |
| Man, Isle of, Mineralogical Account of the | 29 |
| ─────── General Description of the Extent and Form, 31, 34;—Rivers of 34;—Compound Rocks in situ, 36;-Compound Rocks not in situ, 46, 50;—Simple Minerals in situ, 50, 58;—Simple Minerals not in situ, 58;-Temperature of Springs, 60;—Height of Mountains, | 62 |
| Manor Old Vein, in Cornwall, Description of | 151 |
| Mar, District of, Quartz Rock in the | 473 |
| Marble in the District of Assynt | 412 |
| Marine Formation over the Chalk, Lower | 181 |
| ────────────────────Upper | 215 |
| Marl of the Isle of Man | 54 |
| ── under the Pitchstone Porphyry of the Island of Egg | 408 ​ |
| Marl in the South-east part of England | 166 |
| ─── Greenish, in the Isle of Wight | 169 |
| ─── Chalk, Description of | 173 |
| Meteorological Observations on the Coast of Labrador | 489 |
| Mica Slate, Contortions of, at Loch Lomond | 438 |
| Mines of Cornwall and Devon, on the economy of the | 309 |
| ────────────────── The nature of the agreements between the owner of the soil and the mine adventurers | 311 |
| ────────────────── The arrangements between the partners or adventurers themselves | 313 |
| ────────────────── The mode of employing and paying the miners and workmen | 316 |
| ────────────────── The purchase of the materials employed for carrying on the undertaking | 323 |
| ────────────────── The Sale of the Ores from the mine adventurers to the Smelting Companies | 323 |
| Mountains in the Isle of Man, Height of the | 62 |
| ─────── in Labrador | 491 |
| Needles, Isle of Wight, Strata at the | 163 |
| Newhaven, Sussex, Strata at | 191 |
| ───────────────── the Fossils of the | 223 |
| Nodules, Calcareous, in the London Clay | 187 |
| ───── Siliceous, in the Stone of Tillywhim, Dorsetshire | 236 |
| Nomenclature, the imperfections of in Rocks | 390 |
| —————— Proposed modifications of in the terms Graywacke | 93—444—448—499 |
| Greenstone and Greenstone Slate | 393 |
| Hornstone | 369 |
| Killas | 446—499 |
| Porphyry | 424 |
| Quartz Rock | 457—485 |
| Rocks of Transition | 442—470 |
| Sienite | 93—419 |
| Trap | 399 |
| North Downs, Hills composing the | 171. ​ |
| 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 ​ |
| Quartz Rock of the District of Appin | 473 |
| ───────────────── Arisaig | 473 |
| ─────── of the Island of Sky | 473 |
| ─────── of Tyndrum, containing galena | 479 |
| ─────── Schistose, in the group of mountains called Ben-na-Vear, Argylleshire | 475 |
| Reading, Strata at | 198 |
| Rock-Salt, the Brine Springs at Droitwich derived from | 98 |
| Rona, Island of, Mineralogical Observations on the | 391 |
| Rotherhithe, Strata at | 197 |
| Rum, Island ol, Mineralogical Observations on the | 401 |
| Rutile, found near Killin | 437 |
| Ryegate Fire Stone, Description of the | 166 |
| St. David's, On the Mineralogy of the neighbourhood of | 79 |
| Sand, White, of Alum Bay | 185 |
| ────Green, over the Chalk | 187 |
| ──── Vitrified, supposed to be the effect of lightning | 531 |
| Sandstone, Old Red, the Droitwich Brine Springs occur in the | 95 |
| ──────────── cuts off the Coal Measures at Bradford | 283 |
| ─────── under the Chalk in the South of England | 166 |
| ─────── over the Chalk in the South of England | 227 |
| Sappare, found at Boharm | 430 |
| Schihallien, Mountain of, Rocks composing the | 466 |
| Septaria in the London Clay | 187 |
| Sheppey, Isle of, Description of the | 192 |
| Shiant Isles, Description of the | 394 |
| Silica, on the sublimation of | 275 |
| ────Appearances of a partial solution of, on the Surface of some Rocks | 392 |
| Silicified Wood, in the Island of Egg | 408 |
| Sky, Island of, Quartz Rock in the | 473 |
| Slaty Rock, peculiar kind of, near St. David's | 79—85 |
| South Downs, Hills composing the | 171 |
| Springs, Temperature of, in the Isle of Man | 60 |
| Staffa, Remarks on | 501 ​ |
| Stfafa, a bed of alluvial matter on the surface of | 506 |
| Steinhauer, the Rev. Mr. Notice relative to the Geology of the Coast of Labrador | 488 |
| Stifford, Strata at | 196 |
| Stirling Castle, Junction of the Trap and Sandstone at | 305 |
| Spheroidal Forms in the structure of Rocks, and their tendency to assume these forms when decomposing, Observations on the | 76 |
| Stonehenge, Nature of the Stones at | 225 |
| Stream Tin, Occurrence of in Cornwall | 342 |
| Strata, General Order of the, in the South-east part of England | 166 |
| ──── posterior to the London Clay | 169 |
| Stubbington, near Portsmouth, Strata at | 189 |
| Sulphur of Tenerife | 299 |
| Sulphuret of Tin found in Cornwall | 343 |
| Syenite, associated with Mica Slate | 437 |
| Taylor, Mr. J. On the Economy of the Mines of Cornwall and Devon | 309 |
| Teneriffe, Island of, some account of the | 286 |
| Tides, great height of, on the Coast of Labrador | 494 |
| Tin, Oxyd of, Description of the | 336 |
| ─────── Not confined to primitive Rocks | 338 |
| ─────── Uniformity of the crystalline forms of in particular Veins | 339 |
| ─────── Alluvial Depositions of the | 342 |
| ─────── Rocks that contain the | 343 |
| ─────── Specific Characters of the | 350 |
| ─────── Primitive Crystal and Modifications of the | 351 |
| ─────── Macles of the | 366 |
| Tin Croft Copper and Tin Mine, Description of | 152 |
| Tol Carn Copper Mine, Description of | 155 |
| Tourmaline, in the Granite of Portsoy | 433 |
| ─────── Peculiar appearances in some Crystals of | 433—434 |
| Transition Rocks, Objections to such a division | 449—486 |
| Trap and Sandstone, Junction of, and Induration of the Sandstone | 305 |
| Vegetable Remains found in Chalcedony | 510 |
| ──────────────────────── Mode of detecting | 518 ​ |
| Veins of Cornwall, Description of the | 110 |
| ─────────── Direction and length of the | 113 |
| ─────────── Underlie of the | 114 |
| ─────────── Depth of the | 115 |
| ─────────── Width of the | 116 |
| ─────────── Denominations of the Metalliferous | 117 |
| ─────────── Symptoms in the | 120 |
| ─────────── Discovery of the | 155 |
| ─────────── Contents of the Metalliferous | 126 |
| ─────────── North and South, or Cross Courses | 136 |
| ─────────── Slide | 136 |
| ─────────── Heave of the | 117 |
| ─────────── Feeder 138—Leader 138—the Centre | 139 |
| Vein of Limestone and Basalt traversing Amygdaloid | 440 |
| Vitreous Tubes found near Drigg | 528 |
| Vitrified Forts of Scotland, on the | 255 |
| ──── Fort of Dun Mac Sniochain | 257 |
| ─────── of Craig Phadric | 270 |
| ─────── of Amworth | 272 |
| Vitrified Wall of Gatacre House | 273 |
| Vixen Torr, on Dartmoor, Description of the | 70 |
| Volcanic Rocks of the Island of Teneriffe | 283 |
| Walton, in Essex, Cliffs at | 199 |
| Water, Action of, on Turf or submerged Wood, converting them into substances capable of yielding Bitumen on Distillation | 10 |
| Wavellite, found in the Shiant Isles | 397 |
| Webster, Mr. T. On the Freshwater Formations in the Isle of Wight, with some Observations on the Strata over the Chalk in the South-east part of England | 161 |
| ────────── On some new varieties of Fossil Alcyonia | 377 |
| Western Lines, Isle of Wight, Fossils at | 380 |
| Wight, Isle of, On the Chalk and more recent Strata of the | 161 |
| Wolfram, in the Granite of Rona | 391 |
| Wood, on certain products, obtained in the Distillation of | 1 |
| Wood Tin, a particular form of the Oxyd | 341 |
| Woolwich, Strata at | 176—195—221 |
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