INDEX. 



557 



PAGE 



Staffa, a bed of alluvial matter on the surface of . . 506 

 Steinhauer, the Rev. Mr. Notice relative to the Geology of 



the Coast of L,abrador ....... 488 



Siifford, Strata at ....".... IflG 



StirUng Castle, Junction of the Trap and Sandstone at . 305 



Spheroidal Forres 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 1G6 



— : posterior to the London Clay . . • . . 169 



Stiibhington, near Portsmouth, Strata at .... ]89 



Sulphur of Teneriflfe . , . ..... 299 



Sidphuret of Tin found in Cornwall ..... 343 



S^jeiiite, associated with Mica Slate . . . . , 437 



Taylok, 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 parti- 

 cular 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 

 lol Cam Copper Mine, Description of .... 155 



Tourmaline, in the Granite of Portsoy .... 433 



Peculiar appearances in some Crystals of . 43-3 — 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 



Mode of detecting 



610 

 518 



4 A 2 



