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INDEX.
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| 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 |
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