226 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Feb. 25, 



In 1833 Dr. Mantell* gave a further description of the Bognor 

 rocks, and a more complete list of their organic remains. 



In 1834 M. Elie de Beaumont f entered into the theoretical con- 

 siderations of the period of the disturbance of the Isle of Wight, and 

 the hydrographical state of the district during the Eocene period. 

 He considered the strata to have been elevated after the accumu- 

 lation of the freshwater formation, and contemporaneously with the 

 elevation of the main axis of the Alps. The lignites of Alum Bay 

 he thought synchronous with those of Soissons. 



In 1835 Mr. Woodbine Parish, jun. J, gave a list of the organic 

 remains of the Bognor rocks. 



In 1838 Mr= Bowerbank§ carefully measured some of the lower 

 freshwater beds of Headon Hill, and noticed their want of organic 

 remains. 



In 1838 M. d'Archiacll grouped the strata of the Isle of Wight 

 into subdivisions parallel with those he has so well introduced in the 

 French series, but still adhering to the divisions of Webster. He 

 did not consider the period of the anticlinal disturbance to be satis- 

 factorily proved. 



In 1839 Mr. Bowerbank ^described the strata at White Cliff Bay, 

 and showed the great vertical range and abundance of the London 

 clay fossils. He added a list of the organic remains he found in 

 stratum "<i" of Alum Bay, and these he considered to be of well- 

 known London clay species. He viewed the sands, plastic clay and 

 London as alternations of one group. 



In 1839 the Rev. Mr. Clark** detailed the coast section from 

 Poole harbour to the chalk at Stutland. 



And in 1840 Mr. Bowerbankff described several new species of 

 shells and corals from Brackleshani Bay, and showed that species 

 characteristic of the calcaire grossier were there common JJ. 



The details of the lithological characters of the different strata I 

 have given in the sections, Plate IX. figs. 1 & 2, and need not here 

 recapitulate. In these sections the strata are numbered, but I have 

 also used the letters affixed to them in Mr. Webster's section of 

 Alum Bay. There are a few points however connected with this 

 subject to which I beg to call attention. 



Both at Alum and White Cliff Bays the surface of the chalk on 



* Geology of the South-East of England. 



t Memoires pour servir a une description geologique de la France, vol. iii. 

 p. 153. 



i Trans. Geol. Soc, 2nd Series, vol. vi. p. 313. 



§ Mag. Nat. Hist., New Series, vol. ii. p. 674. 



I) Bulletin de la Soc. Geol. de France, tome x. p. 168. 



jf Trans. Geol. Soc, 2nd Series, vol. vi. p. 169. 



** Mag. Nat. Hist., New Series, vol. iii. p. 390. ft Ibid. vol. iv. p. 23. 



XX Since the above was written, Professor Edward Forbes and Capt. Ibbetson 

 have, at the last Meeting of the British Association at York, given an excellent ac- 

 count of the strata at White Chff Bay, noticing particularly the great vertical range 

 of organic remains and their abundance in stratum "rf." — See Report of Brit. Assoc, 

 for 1844. 



