GREENSAND OF ATHERFIELD CLIFFS. 223 



a solution of the geological problem, to which we 

 shall hereafter briefly advert. The subsequent me- 

 moirs by the same author,* Captain Ibbetson, Pro- 

 fessor Edward Forbes,-j~ and Mr. Simms,J contain 

 an elaborate account of these deposits, and of the 

 nature and distribution of the fossils they contain. 

 The limits necessarily assigned to the present 

 volume, will only admit of a concise notice of the 

 facts detailed in those publications, and a general 

 view of the geological phenomena presented to 

 observation in a stroll along the shore, from Ather- 

 field Point to Blackgang Chine. 



Greensand series. — There are 63 distinct beds 

 between the Wealden at Atherfield Point, and the 

 upper stratum of Greensand which is in contact 

 with the Gait near Blackgang Chine ; the total 

 thickness being 843 feet.§ These deposits have 

 been variously grouped and named by different 

 observers; but the most practically useful ar- 

 rangement to the investigator on the spot, is 

 that which especially relates to the organic 

 remains. 1 1 We will now briefly notice the prin- 

 cipal subdivisions in an ascending order; that 

 is, from the Wealden at Atherfield Point, 



* Geol. Journal, vol. i. p. 179. t Ibid. p. 190. 



I Ibid. p. 76. § Captain Ibbetson. 



|| A list of the strata, and a table of the distribution of the fossils, are 

 given in " Geol. Journal," vol. i. p. 195. 



