INDEX. 



615 



Wealden, acceptation of the term extended, Wealden, marine deposits coeval with, probable 



why, 159. 



characterized by its fossils, 104. 



probably the deposit of an estuary, 104, 



a priori, 329. 



-, consequences of their 



existence, 329. 



324. 



, resemblance of part of, to the New 



red sand-stone ; to some of the beds above the 

 chalk ; and to the coal formation, 333. 



, sudden change from marine fossils. 



not to be expected, ge- 

 nerally, in England, 329. 

 , places in which they 



beneath it, and above, 324. 

 , its stratification conformable to the for- 



have been found, 329, 330. 



, remains of plants in, 181. 



, fossil shells of, in Kent, Surrey, Hants, 



mations above and below, 324. 

 , formations immediately below it much 



and Western Sussex, 176. 

 in the Isle of Wight, 



205. 



connected, 331. 



, theory of its formation, 324. 



, analogy of, to deposits now in pro- 



-, reptiles of the, 179. 



-, fishes of, examined by M. Agassiz, 



180; list of them, 367, 368. 



325. 



gress, 325 ; as in the lakes of North America, Wealds, Valley of the, in Kent, Surrey, and Sus- 

 sex, 160. 



, drainage of, on the north- 

 west, remarkable, 150. 



, tortuous course of rivers 



, its distribution and general characters 



in the South-east of England, 323, and note. 

 , its original and remaining extent in 



England, undetermined, 324. 

 , junction of, with the Lower green-sand, 



in, 150; hypothesis thence deduced, 150. 

 , section across, from West 



in the Isle of Wight, 189 ; in Western Sussex, 

 remarkable, 156. 

 — , thickness of, in the South-east of En- 



gland, estimated, 319. 

 not found beyond the limits of the Port- 



land formation, 332. 

 in Buckinghamshire, indications of, 



288, 289, 290. 



on the Kentish coast, described, 161. 



in Kent, Surrey, and Sussex, 159, et 



Sussex to Surrey, (Plate X. a. No. 6) ; 155. 



Webster, Thomas, F.G.S., his work on the Isle 

 of Wight, referred to, 8, 182. 



. on fossil trees in Port- 

 land, 13, 217. 



on the Purbeck and. 



Portland strata, 11, 206, 210. 



, view by, of the coast 



near Hastings, 163. 



seq. 



on freshwater shells in 



the Hastings and Purbeck strata, 324, note. 

 Well, 600 feet in depth, at Lynn, Norfolk, 320. 

 Wells, hot, called Devakl Unci, 50 miles soutli- 

 east of Surat, 427. 



— , supposed indications of, at Wansford, Wendover hill, its height, 284. 



in Northamptonshire, 309 ; doubtful, 383*. Wey river, its course near Farnham in Hamp- 



in the Isle of Wight, 184, 190. shire, and in Surrey, 151. 



, deposits of the same date and character Weymouth, Dr. Buckland and De la Beche, H. T., 



— in Oxfordshire, traces of, 272. 



— at Shotover Hill, Oxfordshire, 274. 



— in the Vale of Wardour, 249. 



in other districts, 326 ; in Scotland, 326; in the on the geology of the neighbourhood of, 1. 



Lower Boulonnois, 326 ; Pays de Bray, 326. . district, an important geological tract, 



equivalents of, in the Isle of Bornholm, 2. 



and near Helsingburg, in Sweden, 330 ; in , the general physical features 



Poland, Switzerland, and France, 326, 330, 

 331. 

 VOL. IV. SECOND SERIES. 



of, 2. 



— , physical features of the Vale of, 3. 

 3 X 



