INDEX. 



701 



on an outlier of lias on the border of 

 Cheshire, and the lower lias between 

 Gloucester and Worcester, 114; on 

 the new red sandstone series in 

 Shropshire, &c., 115; on certain 

 coal tracts in Shropshire, Worcester, 

 and Gloucestershire, 119; on cer- 

 tain lines of elevation and dislocation 

 of the new red sandstone of North 

 Salop and Staffordshire, with an ac- 

 count of trap dykes in that formation 

 at Acton Reynolds near Shrews- 

 bury, 193; on fossil fishes in the 

 new red sandstone at Tysone, 206; 

 on the Silurian rocks, &c. of Pem- 

 brokeshire, 226 ; on the gravel and 

 alluvia of South Wales and Siluria 

 as distinguished from a northern 

 drift covering Lancashire, Cheshire, 

 North Salop, and parts of Worcester 

 and Gloucestershire, 230 ; on the 

 Dudley and Wolverhampton coal- 

 field, and the Lickey quartz rock, 

 407 ; on the existence of lias fossils 

 in Africa, 415; on the Oar's rock, 

 686. 



Murchison (li. I. Esq.) and Sedgwick 

 (Rev. A.), on the physical structure 

 of Devonshire, and on the subdi- 

 visions and geological relaticns of 

 its old stratified deposits, 556. 



Murchison (R. I. Esq.) and Strickland 

 (H. E. Esq.), on the upper forma- 

 tions of the new red system in Glou- 

 cestershire, Worcestershire, and War- 

 wickshire, 563. 



Murcia, account of the tertiary forma- 

 tions of, 80. 



Museum, donations to, during 1833, 

 28; 1834, 129; 1835, 341; 1836, 

 463; 1837, 607. 



Museum Committee, reports of, 1834, 

 24; 1835, 124; 1836, 337; 1837, 

 460; 1838,604. 



Narley Bank, on a bed of recent marine 

 shells, at 415. 



Nelson (Lieut.), on the Bermudas, 81. 



Newent, notice of the coal-field of, 121. 



New red marl, notice of a fault in the 

 lias and, 5. 



New red sandstone series, account of 

 in Shropshire, &c., 115; divisions of 

 into red and green marls, 116; red 

 sandstone and conglomerates, 116; 

 calcareous conglomerates, 116; and 

 lower new red sandstone, 117; on 

 lines of elevation and dislocation of 

 the, in North Salop and Staffordshire, 

 193 ; on the trappean rocks associated 

 with, in Devonshire, 196; account 

 of fossil fishes in, near Tyrone, 206; 

 geographical arrangement of, in the 

 south-east of Devonshire, 585 ; de- 



scription of, in Worcestershire, &c.j 



563. 



Nimmo (Mr. A.), notice of, in the 

 obituary of the President's Address 

 for 1834, 46. 



Nitrogen, observation on, in thermal 

 and mineral springs, 178. 



Normandy, on the geology of the coast 

 of, 546. 



North America, some facts in the geo- 

 logy of the central aad western por- 

 tions of, 103. 



North American continent, on the an- 

 cient state of, 537. 



North Devon : see Devonshire. 



Northern drift, account of, in Lanca- 

 shire, Cheshire, &C.5 333. 



Northampton (Marquis of), on Spiroli- 

 nites, 685. 



North Foreland, notice of coast section 

 from Whitstable to the, 78, 



North Staffordshire coal-field, notice 

 of Ichthyolites from the, 202. 



North Wales, sections in, 679 ; groups 

 of rocks composing, 679. 



Oar's Rock, notice respecting, 686. 



Obituary of Fellows deceased, during 

 1833, 42; 1834, 145; 1835, 357; 

 1836, 479; 1837, 626. 



Obsidian, notice of, from Real del 

 Monte, 686. 



Officers and Council, list of, for 1834, 

 40; 1835, 144; 1836, 356; 1837, 

 477; 1838, 622, 



Old Radnor, trap rocks of, 88 ; line of 

 elevation produced by, 16. 



Old red sandstone, structure of, in 

 Herefordshire, Brecknockshire, and 

 Carmarthenshire, 11 ; table, 13 ; dis- 

 locations of, 12; account of, in 

 Pembrokeshire, 227 ; notice of trap 

 rocks traversing, 91 ; of fossil fishes 

 in, 207 ; synopsis of the English se- 

 ries of stratified rocks inferior to the, 

 675. 



Olot, no traces of modern volcanos 

 near, 22. 



Oolitic formations, distribution of fos- 

 sils in the, of Yorkshire, 429. 



Oolitic series, notice of fossil fishes in, 

 207. 



Op/dura Egertoni, description of, 202. 



Organic remains : see Fossils. 



Ormoceras, characters of, described, 

 689, 



Orthocerata, on some species of, 688. 



Owen (R, Esq.), Wollaston Medal 

 and balance of Proceeds awarded 

 to, 604, 624 ; reply of, on receiv- 

 ing the Medal, 621 ; on the Toxodon 

 Platensis, 541 : on the dislocation of 

 the tail of Ichthyosauri, 660; on the 

 Plesiosaurus macrocephalus, 663. 



