GENERAL INDEX. 



945 



Neritopsis, sp., 394. 



Newton, E. T., Esq., on the remains 

 of Hypsodon, Portheus, and Ichthyo- 

 dectes from British cretaceous strata, 

 with descriptions of new species, 505. 



Newtondale, corallian rocks of, 333. 



Newtown, section through, 618. 



Linford, 766. 



Nicholson, Prof. H. A., and Prof. R. 

 Harkuess, on the strata and their 

 fossil contents between the Borrow- 

 dale series of the north of England 

 and the Coniston Flags, 461. 



North Grimston, corallian at, 374. 



Hill, section from, to Bur- 

 dale Beck, 375. 



North Wales, Prof. T. M'Kenny 

 Hughes on the Silurian grits of 

 Corwen, 207. 



, Mr. J. A. Phillips on the 



chemical and mineralogical changes 

 which have taken place in certain 

 eruptive rocks of, 423. 



Northumberland, Carboniferous Lime- 

 stone series of, 407. 



, MM. fopley and Lebour on the 



intrusive character of the Whin 

 Sill of, 406. 



Norway, thickness of glaciers of, during 

 the glacial epoch, 160. 



and Greenland, Mr. A. Helland 



on the formation of fjords, lakes, 

 and cirques in, 142. 



Norwich Crag, Mr. F. W. Harmer on 



the so-called terrestrial surface at 



the base of the, 134. 

 , stone-bed at the base of the, 



139. 

 Nothe grits and clays, 263. 

 Nottingham, Mr. E. Wilson on a new 



exposure of Eli antics near, Proc. i. 

 Nottinghamshire, Permians of, 17. 

 Nova Scotia, Dr. J. W. Dawson on a 



specimen of Diploxylon from the 



Coal-formation of, 836. 



, Mr. E. Gilpin on some 



recent discoveries of copper-ore in, 

 749. 



Permians of, 24. 



Nova Tcherkask, section below, 847. 

 Niigsuak peninsula, 142, 143. 

 Nun's-well Bay, section at, 236. 



Obolella sabrincs, 669. 



Oifjordvand, section at Lake, 167. 



Old Red Sandstone, Lower, Messrs. 

 Jack and Etheridge on the discovery 

 of plants in the, of the neighbour- 

 hood of Callander, 213. 



Olenus Salteri, 666. 



triarthrus, 666. 



Orwell, section from the valley of the, 

 to that of a tributary of the Deben, 

 104. 



Osmington oolite, 265. 



Oswaldkirk, section from Ampleforth 

 Beacon to, 356. 



Owen, Prof. R., on the rank and affi- 

 nities in the Reptilian class, of the 

 Mosasauridas, Gervais, 682. 



Oxford Clay, Prof. Seeley on the ver- 

 tebral column and pelvic bones of 

 Pllosaurus Evansi from the, of St. 

 Neott's, 716. 



Oxfordshire, corallian rocks of, 283. 



Pakefield-lighthouse gorge, section 

 from, to the northern end of Cove- 

 hithe cliff, 137. 



Palasolitbic man in Robin-Hood Cave, 

 591. 



in the Church-hole Cave, 



602. 



Palseoniscus, 548, 556, 557. 



Paradoxechinus novus. 65. 



Patellida?, Mr. J. S. Gardner on Brit- 

 ish Cretaceous, and other families 

 of Patelloid Gastropoda, 192. 



Patricroft, Permians of, 21. 



Pebidian rocks of St. David's, 235. 



and Dimetian (Pre-Cambrian) 



rocks of St. David's, Mr. H. Hicks 

 on the, 229. 



Pecten aptiensis, 500. 



intertextus, 399. 



' qualicosta, 399. 



Raulinianus ?, 501. 



subacutus, 501. 



Peldar Tor, 776. 



Penmaenmawr, altered eruptive rocks 

 of, 423. 



Pentreath beach, serpentine at, 887. 



Penyglog, section from Corwen to, 207. 



Perlite, devitrified, 455. 



Perlites, structure of modern, 451 ; of 

 ancient spherulitic, 453. 



and pitchstones, ancient devitri- 

 fied, from the Lower- Silurian dis- 

 trict of Shropshire, 449. 



Permian, beds described as, 10. 



Permians, divisions of, 25; sections 

 of, 19, 20. 



Pharctrospongia Strahani, Sollas, a 

 fossil holorhaphidote sponge from 

 the Cambridge coprolite-bed, 242. 



Phillips, J. A., Esq., on the chemical 

 and mineralogical changes which 

 have taken place in certain eruptive 

 rocks of North Whales, 423. 



Pickering, generalized section of co- 

 rallian at, 334 ; enlarged portion of 

 the same, 336. 



