INDEX. 



595 



Shells, fossil, catalogue raisonne, remarks on, 137. 



■ comparison 



with existing testacea of the St. Lawrence, 139. 

 approach more nearly the 



arctic fauna than that of the St. Lawrence, 141. 

 lists of, from the cornbrash of the 



Yorkshire coast, 145. 



of the Yorkshire coast, 14-6. 



Kelloway's rock 



Oxford clay of 



the Yorkshire coast, 149. 

 systematic list of species from the 



cornbrash, &c. of the Yorkshire coast, 150. 

 catalogue raisonne of, found in the 



tertiary strata of the basin of the Clyde, and not 

 known in a living state in the British seas, 155. 

 notices of, found in White Cliff and 



Alum Bays, 170-172. 

 list of, from the Silurian strata near 



Abergele, 198. 

 from the lower lias on the line of the 



Birmingham and Gloucester railway, 55]. 

 recent, list of, from the Gulf of St. Lawrence, 



138. 

 ■ common to the south-west coast 



of England and Mediterranean, 435. 

 in the raised beach of Hope's 



Nose, 442. 

 Sheppey, description of some ophidiolites from the 



London clay of, 209. 

 ■ ornitholites from, 206 



et seq. 

 Shoal Harbour, Strait of Magellan, remarks on the 



boulders of, 419. 

 Siegen, notice of fossils found in grauwacke near, 



258. 

 Sighajik, account of the peninsula between, and 



Teos, 12. 

 Silurian rocks, notice of, west of Abergele, 195. 



list of fossils found in, 198. 



notice of, in Westphalia, 252. 



description of, near Wissenbach, &c. 



in Nassau, 253. 

 in the Eifel district, 279. 



Simaul, notice of the sandstone south of, II. 



sectional list of strata nine miles south of, 



18. 



Slate-clay and shale, account of a formation com- 

 posed of, near Lisbon, 122. 



constitutes one of the concen- 

 tric bands around Cintra, 122. 



alternates with igneous rocks, 



122. 



Smith, J. Esq., on the relative ages of the tertiary 

 and post-tertiary deposits of the basin of the Clyde, 

 153. 



Smyrna, notice of the formations near, 11. 



references to full description in vol. v. p. 393, 



12, 19, 26. 



Solen, remarks on species of, from Lustheide, 376. 



Sopwith, T. Esq., notice of a series of models de- 

 signed by, to illustrate geological phaenomena, 568. 



South America, remarks on the rapid destruction of 

 the interior of trees in, 177. 



Mr. Darwin on the distribution of 



the erratic boulders and contemporaneous unstra- 

 tified deposits of, 415. 



South Wales, Mr. Logan on the beds of clay im- 

 mediately below the coal-seams of, and on boulders 

 of coal in the Pennant grit of that district, 491. 



Sowerby, Mr. G., reference to his remarks on the 

 strata above the chalk in the Isle of Wight, 169 

 note. 



Sowerby, J. de Carle, description of new species of 

 Silurian fossils from the Rhenish provinces, 408. 



Spirifer, remarks on species of, and description of 

 new species from the Devonian formations in the 

 Rhenish provinces, 369. 



from the Silurian 



strata, 408. 



Spiriferi, distribution of, among Palaeozoic rocks,319. 



Sponge, arguments in support of the opinion that 

 chalk flints and cherts from the greensand were 

 originally sponges, 182 et seq. 



. measurements of tubuli of, in chalk flints, 



189. 



Stevenston, notice of deposits in the parish of, newer 

 than the diluvium, 155. 



Stifft, M., notice of his description of the igneous 

 rocks of Nassau, 260-261 note. 



Stigmaria ficoides, extract from Steinhauer's account 

 of, 493. 



fire-clay, description of, in the South 



Wales coal-field, 491 et seq. 



