INDEX. 



50^ 



Portland stone in the Isle of Purbeck and Dor- 

 setshire, 17, 210. 



at Quainton, Bucks, 290. 



near Stewkley, 291 and note. 



at Swindon, 265. 



in the Vale of Wardour, 254. 



in the Pays de Bray, 328; in 



Burgundy and the vicinity of Angoulesme, 19. 



in other parts of France, 330, 331. 



, fossils of, in Dorsetshire, 260. 



in Oxfordshire and 



Buckinghamshire, 299. 



at Swindon, 268, 



in the Vale of Wardour, 



2C0. 



Portland strata, remarks on their distribution and 

 characters in the South-east of England, 331. 



, their junction with tlie Purbeck 



strata, a point of great geological interest, 331. 



, less extensive at present than the 



Kimmeridge clay, 332. 

 , their equivalents in France, 19, 



227; and on the Continent in general, 222. 

 Prestwich, Joseph, F.G.S., on alternations of 



marine and freshwater remains, 321, note. 

 Prevost, Constant M., observations by, on the 



Isle of Wight, 185 note. 

 notice of his memoir on the 



coast of Normandy, 331. 

 Primary and secondary stratified rocks, broad 



mineraiogical distinction between, 66. 

 tertiary stratified rocks, a still 



broader distinction, 67. 

 Prout, Dr., coproid masses from the Gault, 



examined by, 111, note. 

 finds the petrified trunks of Portland, 



and of the Vale of Wardour, to be almost 



wholly siliceous, 225, 254, note. 

 Pudding-stone, numerous large blocks of, like 



that of Hertfordshire, occur in some of the 



chalk combs, Dorsetshire, 5. 

 Pulborough, vicinity of, subdivisions of the Lower 



green-sand in, 155. 



, derangement of strata near, 155. 



Purbeck beds on the coast of Dorset, notice of, 



11 ; occurrence of an oyster bed in, 12. 

 VOL. IV. SECOND SERIES. 



Purbeck Isle, distant view of, 206, note. 



, east coast of, section, 206. 



, general view of the south coast of. 



212. 

 ■ , general view of the coast west of, 



215; numerous sections of beds below the 



chalk, 215, and note. 

 Purbeck strata, their junction with the Hastings 



sands, in the Isle of Purbeck, 208. 

 ~— Portland 



formation, very remarkable, 225, 331. 



■ near Aylesbury, 287. 



at Combe Wood, in Oxfordshire, 



in part oolitic, 275. 



at Long Crendon, 282. 



at Dinton, Bucks, 285. 



at Garsington, Oxfordshire, 277; 



there called " Malm," 277. 



in the Isle of Portland, 218. 



in the Isle of Purbeck, 208, 209. 



at Swindon, N. Wilts, 266. 



in the Vale of Wardour, 249, 



— near Whitchurch, Bucks, 289. 

 — , fossils of, in Dorsetshire, 229. 

 • in Oxfordshire and 



Bucks, 297. 



- in the Vale of Wardour, 



259. 

 Pusch, M., notice of his memoir on the beds below 



the chalk, in Poland and Silesia, 329. 

 Pufzberg, near Bonn, section of the beds at, 



456. 



Q. 



Quadrupeds, fossil remains of, in the environs of 

 Bonn, mentioned by Prof. Noggerath, 454. 



Quartz (Amethyst), in the trap rocks of the 

 Dukhun, 424. 



, varieties of, in the trap rocks of the 



Dukhun described, 424. 



', forms a large portion of the Lower green- 



sand conglomerates in Kent, 116. 

 Quartzose green slate of Cumberland, notices of 

 the, 48. 



3v 



