649 



Ohio, bones of Mastodon found in gravel 



of, 37. 

 Ohio coal-field, 2. 



Old red sandstone of Westmoreland and 

 Lancashire, 27. 



• of Berwickshire, 29. 



of the Scottish border, 79. 



Mr. Trevelyan onfractiired pebbles 



found in Forfarshire (N. Britain) in 

 the conglomerate of, 364. 

 Oliva sp. (cast), 565. 

 Ontario lake, boulder formation on the 



borders of, 20. 

 Oolites, fossils found in, 446. 

 Oolitic coal of Brora, Mr. Robertson on, 



173. 

 Oolitic rocks of the Cotteswold Hiils, 



account of, 437. 

 Ophioderma tenuibrachiata, 233, 

 Ophiolitic rocks of Tuscany, 4/3. 

 Ophiura Murrayii, 233. 



serrata, Romer, 234. 



Ophiuridse, fossil, of Britain, notice of, 



by Prof. E. Forbes, 232. 

 Orbigny, M. Ale. d', notice of his contri- 

 bution to S. American geology, 124. 

 Ordnance Geological Survey of England, 



progress of, 75. 

 Ornithichnites, notice of the American 



specimens, 22, 141. 

 Ostrea subspatulata, 307. 

 Otodus, notice and figures of five new 



species of, from i-'ondicherry, 385. 

 Owen, Prof., on the fossil tympanic 

 bones of four species of Baljena from 

 the red crag, 283. 



account of fossil crania of the 



Dicynodon from South Africa, 500. 

 Owen, Dr. Dale, on the geology of the 



Western States of N. America, 1. 

 Oxford clay, new species of fossil fish 

 from, described by SirP.Egerton, 446. 

 Oxyrhina, notice and figure of new 



species of, from Pondicherry, 386. 

 Palaeontology : — See Fossils. 

 Palaeozoic rocks of the British Islands, 

 notice of the President's speech for 

 1843, 70. 



older, of North Wales, 251. 



comparison of those in N. Wales 



with those of Cumberland, 576. 

 of Scandinavia and the Baltic pro- 

 vinces of Russia, 601. 



of Canada, 450, 584. 



Palaeozoic fossils, notice of M. de Ver- 



neuil's labours concerning, 83. 

 Paludina Stricklandiana, 380. 



vivipara, 390. 



sp. (cast), 573. 



Parallel roads of Glen Roy, probable 

 origin of, 98. 



Parkfield colliery near Wolverhampton, 

 on a fossil forest there, by Mr. Beck- 

 ett, 287, 



Mr. Ick on dicotyledonous trees 



found in the coal there, 289. 



Parnassus, Mount, Mr. Trevelyan on 

 scratched rocks near, 203. 



Pearce, Mr. J. C, on the locomotive 

 powers of the family Crinoidea, 159. 



on a new Encrinite from Dudley, 



160. 



Pembrokeshire, Silurian rocks of, 76. 



Percy, Dr., analysis of plumbago and 

 anthracite from Massachussetts, U.S., 

 419. 



Permian rocks of Russia, notice of, 105. 



Permian system as developed in Russia 

 and other parts of Europe, by R, I. 

 Murchison, Esq. and M. E. de Ver- 

 neuil, 327. 



recapitulation of its fauna, 333. 



PhiUips, Mr., his investigations in the 

 Malverns, 77. 



Pholidophorus crenulatus, 184. 



Hartmanni, 184. 



Phosphorite, Dr. Daubeney and Capt. 

 Widdrington on its occurrence in 

 Estremadura, 298. 



Physeter, on the occurrence of, in the 

 red crag of Felixstow, by Mr. 

 Charlesworth, 286, 



Pictou (Nova Scotia), coal-measures of, 

 273, 506. 



Piedmontese Alps, notice of M. Sis- 

 monda's researches in, 115. 



Pipes in the chalk, Mr. Trimmer on, 6. 



Planorbis Spratti, 380. 



Plastic clay, on a bed of septaria con- 

 taining freshv/ater shells in, 389. 



Pleistocene beds near Copford, Essex, 

 164, 



" Pleta," or orthoceratite limestone of 

 Russia, 616. 



Plumbago and anthracite, Mr. Lyell on 

 the age and origin of a bed cf, from 

 the mica- schist of Massachussetts 

 (U.S.), 416. 



analysis of, by Dr. Percy, 419. 



Polished rocks not necessarily pro- 

 duced by glacial action, 599, 

 Polyparia, account of six (cretaceous) 

 species obtained from Timber Creek 

 (U.S.) by Mr. Lyell, described by Mr, 

 Lonsdale, 311. 

 Pondiclierry,fossiliferous beds near, 204. 



cretaceous fossils from, 325. 



Sir P. Egerton's account of re- 

 mains of fishes found near, 381. 

 Porth Treiddyn, Carnarvonshire, Mr. 

 Bvres on traces of glacier action at, 

 370, 



