Cu. 



•1 



ON SOUTH COAST OF ENGLAND. 



529 



is ascertained that the shingle is derived from the westward. 

 Whether the pebbles are stopped by the meeting of the tide 

 from the north flowing through, the Straits of Dover, with 

 that which comes up the Channel from the west, as was for- 

 merly held, or by the check given to the tidal current by the 

 waters of the Rother, as some maintain, is still a disputed 

 question. 



Marsh 



from 



Wii 



reign of Edward I., the mouth of the Bother stopped up, and 

 the river diverted into another channel. In its old bed, an 

 ancient vessel, apparently a Dutch merchantman, was found 

 about the year 1824. It was built entirely of oak, and much 

 blackened."* Large quantities of hazel-nuts, peat, and wood 



i 



mney Marsh. 

 Westward of Hastin 



5 



Leonard's, the shore-line has 



been giving 



way as far as 



Pevensey Bay, where formerly there existed a haven now 

 entirely blocked up by shingle. The degradation has equalled 

 for a series of years seven feet per annum in some places, and 

 several martello towers had in consequence, before 1851, been 

 removed by the Ordnance. f - At the promontory of Beachy 



of chalk, three hundred feet in length, and 



mass 



from seventy to eighty in breadth, fell in the year 1813 with 

 a tremendous crash ; and similar slips have since been fre- 



x 



Newhav 



entrenchment 



Castle Hill 



Roman 





evidently once of considerable extent and of an oval form, 

 but the greater part has been cut away by the sea. The 

 cliffs, which are undermined here, are high ; more than one 

 hundred feet of chalk being covered by tertiary clay and sand, 

 from sixty to seventy fee.t in thickness. In a few centuries 

 the last vestiges of the plastic clay formation on the southern 



* Edin. Journ. of Science, No. xix. 



p. 56. 



t Redman as cited, p. 315. 



\ "Webster. Geol. Trans, vol. ii. p. 192. 

 1st series. 



VOL. I. 



M M 



