544 



INDEX. St-Sp 



St. Austell granite, 230. 



St. Davids, pre-Cambrian volcano of, 



291. 



St. Gothard, 23. 

 St. Helena, 48. 

 St. Johns quartz felsite, 236. 

 St. Kilda, structure of, 320. 

 St. Paul, 24. 

 Salisbury Crag, 308. 



Suiter and "Wood ward on Crustacea, 491. 

 Sand, 45, 92. 



size of grains, 93. 



dunes, 125. 



glacier, 107. 



Sanidine trachyte, 38. 



Santa Cruz. 45. 



Santiago, plain of, 133. 



Santorin, augite andesite of, 275. 



Saponites, 366. 



Sartorius, 3. 



Saussure, 3. 



Scalpa, serpentine of, 389. 



Sceuery of metamorphic rocks, 387. 



of millstone grit, 81. 



Schaffhausen falls of the Rhine, 156. 

 Scheibner on Foyaite, 224. 

 Schiehallion, 9. 

 Schist, 31. 

 Schorl granite, 36. 



of the West of Eugland, 229. 



Scilla, 5. 



Scilly Islands, granite of, 230. 



Sclater's natural history provinces, 461. 



Scomberoid fishes, 505. 



Scotland, gneiss in. 382. 



Scott. R. H., on Loch Etive granite, 



239. 



Scrope, 2. 

 Scrope Paulett, on water as a volcanic 



agent, 177. 

 Scur of Eigg, 320. 

 Scutelline sea-urchins, 490. 

 Searles Wood on tertiary mollusca, 499. 

 Seaton dyke, 339. 



Sea-water as a source of metals, 399. 

 Secondary lamellibranchiata, 497. 



sea-urchins, 489. 



sponges, 477. 



strata, table of, 54. 



palseontological breaks in, 341. 



Sedgwick, Prof. A., on cleavage, 32. 



on Teesdale, 336. 

 Sedimentary terms, 74. 

 Seend, iron ore of, 434. 

 Seismology, 321. 

 Selenite, 46. 



Semi-crystalline texture, 254. 

 Septaria, 47, 102. 

 Sequence of earth-movement in Britain, 



347. 

 Serpentine, 288. 



of Anglesey, 312. 



of the Lizard, 312. 



in Scotland, 388. 



Sevenoaks stone, 97. 



Shallow-water deposits, mollusca of, 



442. 



"Shannon," coral growth on British 



ship, 115. 

 Sliap granite, 235. 

 Sharks, fossil, 502. 

 Sharpe on foliation, 360. 

 Shell limestone, 49. 

 Shell Ness, 49. 

 Shelve, lead mines of, 423. 

 Sheppey Flora, 474. 

 Shirleywich, 21. 

 Shore, 124. 



Shropshire coalfield, iron of, 430. 

 Siberian limestones, 88. 

 Silesia, metalliferous veins of, 411. 

 Silver, 418. 



relation of propylite to, 256. 



Silvestri on Etna, 188. 



Simeto River, excavation by, 154. 



Simultaneous origin of water-formed 



rocks, 49. 

 Sirius, 17. 



Skiddaw granite, 235. 

 Skull of archaeopteryx, 518. 



branchiosaurus, 508. 



Dolichosoma, 509, 510. 



Mososaurus, 512. 



Skye, volcanoes of, 320. 

 Slate, 32, 46, 100. 

 Slickensides, 77. 

 Smith, William, 7, 65. 



on identification of strata, 448. 



Smyth, Admiral, on mouth of Rhone, 



164. 



Smyth, Warrington, on iron ores, 430. 

 Soda granites, 245. 

 Solfataras, 192. 

 Solidity of the earth, 11. 

 Sollas, W. J., on Siphonia, 478. 

 Somersetshire, iron ores of, 427. 

 Sorby, Dr. H., on cleavage, 32. 



on metamorphism, 359. 



on mineral history of strata, 92. 



on oolite, 48. 



on quartz crystals, 36. 



on temperature of rock-formation, 



174. 

 Source of lime, 51. 



of metals, 398. 



South African province, 459. 

 South Devon, schists of, 381. 

 South-east Britain, coast of, 122. 

 South of Ireland, metamorphic rocks of, 



391. 



South Wales coal-field, iron of, 431. 

 Southern temperate flora, 472. 



zone, mollusca of, 459. 



Spain, granite in, 220. 

 Specific gravity, 9. 



heat of limestone, 390. 



Speeton, 6. 



Spencer, Herbert, on illogical geology, 



450. 



Sphene, 27. 



Spirifera, figure of, 496. 

 Spongia, 477. 



Spongilla in the Purbeck, 477. 

 Springs, 151. 



