GENERAL INDEX. 



607 



Pareora system, 209 ; eruptive rocks 



of the, 216. 

 Parte n Wood, section from Middle- 

 town Hill to, 537. 

 Peat-deposits, Pleistocene, on Beh- 



riug's Island, Dr. H. Woodward on 



a skeleton of Bhytina gigas from 



the, 457. 

 Peat-mosses in Xew Zealand, 213. 

 Pebbles, split, from Boulder-clay, 



596. 

 Pedina Smifhii, 433. 

 Penarfjnydd, picrite of, 517. 

 Pengorpbwysfa, picrite of, 516. 

 Penmaenmawr, till at, 105. 

 Penning, ^Ir. W, H., on the goldfields 



of Lydenburg and De Kaap. in the 



Transvaal, South Africa, 569. 

 Peridotites, Prof. J. W. Judd on the 



Tertiary and older, of Scotland, 354. 



, Tertiary, 356 ; Palaeozoic, 395. 



, Palasozoic. alteration of minerals 



in, 396; varieties of the, 398. 

 Permian breccias of Leicestershire 



and South Derbyshire, fossiliferous 



nodules and fragments of haematite 



from the, Proc. 109. 

 Petane series, 211. 

 Phosphates, Mr. G. Hughes on some 



West-Indian, 80. 

 Phyllopora tumida, 109. 

 Picrite-boulder near St. Davids, 518. 

 Picrites, altered paleeozoic, of Scotland, 



400. 

 , occurrence of, in Wales, 511 ; 



of Anglesey and Caernarvonshire, 



515 ; paragenesis of minerals of, 



520. 

 Pidgeon, Mr. D., on some recent dis- 

 coveries in the submerged forest of 



Torbay, 9. 

 Plan of country near HatcLiffe, 119. 

 Plant-beds, Lower Eocene, of the 



basaltic formation of Ulster, 82. 

 Platastrgea Conybeari, 184. 

 Pleistocene peat-deposits, skeleton of 



Bhytina gigas from the, onBehring's 



Island, 457. 



series in New Zealand, 212. 



Plesiodiadema Michelini, 430. 

 Pliocene deposit at St. Erth, near the 



Land's End, Cornwall, ^b. 

 Plutonic rocks, deep-seated, changes 



of the minerals in, .383. 

 Polj'zoa of the Cambridge Greensand, 



Mr. Vine on the, Proc. loi. 

 Porfido-rosso antico, brecciated, 157. 

 Porphyries of the Rio-Tinto district, 



250. 

 Porphyritic masses in the Rio-Tinto 



district, section, 252. 



Q. J. G. S. No. 164:. 



Porphyritic schists of the Rio-Tinto 



district, 251. 

 Porphyro-granulitic structure of do- 



lerites, 361. 

 Preston Sands, plan of outcrops 



observed on, 12. 

 Prorastomus, 465. 

 Pseudo-chrysolite, or Bouteillenstein, 



of Moldauthein in Bohemia, 152. 

 Pseudodiadema defresmra, 429. 



hemisjjhcsricwn, 428, 429. 



Pteraspidian fish from the L^pper 



Silurian rocks of North America, 



48. 

 Pteraspis, 50. 

 Purbeck formation. Prof. T. Rupert 



Jones on the Ostracoda of the, 



311. 

 Purple and Hessle clays, divisional 



line between the, in Lincolnshire, 



126. 

 Putataka series, 202. 

 Putiki series, 211. 

 Pyritic region of the Sierra Morena, 



Mr. J. H. Colhns on the, 245. 

 Pyrites deposits of the Rio-Tinto dis- 

 trict, 245. 



of the Rio-Tinto district, 255; 



analyses of, 258, 259. 



Pyroxenes in andesites of Moel-y- 

 Golfa, 541. 



in diabases of the Breidden Hills, 



544. 



, rhombic, in palaeozoic peri- 

 dotites, 397. 



. changes in, in Hebridean rocks, 



377. ^ 



of the Hebridean gabbros, 



366. 



Raised beaches in New Zealand, 

 212. 



Reade, Mr. T. Mellard, on the drift- 

 deposits in Colwyn Bay, 102. 



, on the evidence of the action 



of land-ice at Great Crosby, Lan- 

 cashire, 454. 



, on boulders wedged in the 



Falls of the Cynfael, Ffestiniog, 

 Proc. 7. 



Redcliffe Towers, section of the ex- 

 posure at, 20. 



RedhiU shales, 482, 488. 



"Reefs" of the Lydenburg and De 

 Kaap goldfields, 572, 577. 



Renai'd, Prof, award of the Bigsby 

 Gold Medal to, Proc. 35. 



Rhyncliopora bispinosa, 302. 



Rhytidodendron, relationship of Llo- 

 dendron to, Proc. 98. 



2 u 



