GENERAL INDEX. 



Scotland, east of, Mr. E. Etheridge, 

 jun., on an adherent form of Pro- 

 ductus and a small Spiriferina from 

 the Lower Carboniferous Limestone 

 group of the, 454. 



Sections from the Alps to Brighton, 

 New Zealand. 54 ; of Gianfs Kettle 

 in Laurentian granite in Pulpit 

 Rock, near Oxbow, 78 ; of excava- 

 tion made in search of stream-tin, 

 81 ; of cliff at Kessingland and 

 Pakefield, 124 ; at Rougeac, 147 ; 

 across hematite deposits, Millom, 

 Cumberland, 181 ; of haematite 

 vein, 182 ; of haematite vein in Car- 

 boniferous Limestone at Parkside, 

 183 ; of llhaetic beds, Spinney Hills, 

 near Leicester, 213 ; across the 

 valley of the Willow Brook, at 

 Leicester, 217 ; along the course of 

 the valley of the Dee, 228 ; from 

 near Newton Abbot to Milber 

 Down, 230 ; in the Robin-Hood 

 Cave, 242, 243 ; from Lad ram Bay 

 to Sidmouth, 276 ; from Sidmouth 

 to Beer Head, 276; through the 

 Kohl Berg. 318 ; through the Schwat- 

 zer Berg, 319 ; from the Eisenbach 

 valley to the Hodritsch valley, 319 ; 

 of strata to show position of bone- 

 bed near Bradford and Clifton, 

 Yorkshire, 333 ; at the High Force, 

 467 ; of Permian and Triassic rocks 

 near Nottingham, 536. 



Seeley, Prof. H. G\, on the posterior 

 portion of a lower jaw of a Laby- 

 rinthodon (L. Lavisi) from the 

 Trias of Sidmouth, 278. 



, on an associated series of cervi- 

 cal and dorsal vertebra? of Poly- 

 ptychodon, from the Cambridge 

 Upper Greensand, 433. 



, notice of the occurrence of re- 

 mains of a British fossil Zeuglodon 

 (Z. Wanhlyni, Seeley) in the Barton 

 clay of the Hampshire coast, 429. 



, on Crocodilus icenicus (Seeley), 



a second and larger species of cro- 

 codile from the Cambridge Upper 

 Greensand, 437. 



, on Macrurosaurus semnus (See- 

 ley), a long-tailed animal with pro- 

 coelous vertebra? from the Cambridge 

 Upper Greensand. 410. 



, on remains of Emi/s hordwellensis 



(Seeley) from the Lower Hordwell 

 beds in the Hordwell Cliff, 445. 



, on the British fossil cretaceous 



birds, 496. 



Seguenza, Prof., award of the Wollas- 

 ton Donation Fund to, Proc. 49. 



Selwyn, A. R. C, Esq., award of the 

 Murchison Medal to, Proc. 49. 



Sidmouth, Mr. Lavis, on the Triassic 

 strata in the cliff-sections near, 274. 



, Prof. Seeley on a portion of the 



lower jaw of a Labyrinthodon (L. 

 Lavisi) from the Trias of, 278. 



, section from LadramBay to, 276. 



, section from, to Beer Head, 276. 



Sigaretus excentricus, 519. 



Silurian corals, Prof. Duncan on the 

 presence of unicellular alga? within, 

 205. 



, Upper, and succeeding palaeo- 

 zoic rocks, Mr. H. Hicks on the 

 physical conditions under which 

 the, were probably deposited over 

 the northern hemisphere, Proc. 10. 



Silurians, Mr. Kendall on haematite in 

 the, 180. 



Sinen Gill, granite of, 3. 



Skiddaw granite, 5. 



slate, altered, microscopic cha- 

 racters of, 18 ; analysis of, 22. 



Slates altered by contact with granite, 

 408. 



of the Lake-district, 2 ; analysis 



of, 5. 



Slaty rocks, crystalline, from Western 

 Cornwall, analyses of, 165. 



Somerset, Mr. W. A. E. Ussher on the 

 Triassic rocks of, and Devon, 367. 



, West, Trias of, 377. 



Somma, volcanic dykes of, 472. 



Spheroidal structure, Rev. T. G. Bon- 

 ney on, 140. 



in agglomerate, Burntis- 

 land, 150 ; in basalt near Murat, 

 150 ; in Rowley-Regis basalt, 151 ; 

 in an unjointed column near Le 

 Puy, 151. 



Spheruhtic felsite of Carrock Fell, 

 analysis of, 23 ; and Lingy Hill, 16, 

 20. 



Spinney Hills, section of Rhaetic beds 

 near, Leicester, 213 ; section across 

 the valley of the Willow Brook 

 through the, 217. 



Spiriferina, Mr. R. Etheridge, Jun., 

 on an adherent form of Productus 

 and a small, from the Lower Carbo- 

 niferous Limestone group of the 

 east of Scotland, 454. 



Spotted schist of the Lake-district, 2, 

 4,5. 



Stereodermata, Echinoidea, 40. 



Stream-tin, diagram section of excava- 

 tion made in search of, 81. 



Strepsodus sauroides, 338. 



Sub-Wealden boring, Sussex, Mr. H. 

 Woodward on some new Macrurous 



