52 RAMBLES BOUND FOLKESTONE. 



Thickly strewn about and water-worn as they are all 

 through this seam, they must represent such re- 

 mains which gradually accumulated on an old sea 

 bed, tolerably clear of sediment. Inland this bed 

 appears to thicken considerably, and was worked a 

 lew years ago at Cheriton for the extraction of the 

 phosphate for agricultural purposes. It forms here 

 a good line of demarcation between the Greensand 

 and the Gault. In the Gault itself, however, there 

 are two or three similar beds to be traced. 



The Gault Clay here is about 100 feet in thickness, 

 and has been divided by Mr. Price into eleven beds 

 characterised by particular species of ammonites. 



Between the Gault and the Chalk we have a 

 feeble development of the Chloritic Series or Upper 

 Greemand, blocks of which, some I believe still in 

 situ, may be seen on the floor when the tide is out. 

 Fossil wood may occasionally be found in it. 



Then come the Lower Chalk strata with an almost 

 entire absence of flints, and a scarcity of fossils. 

 But between the high chalk cliffs and the Lower 

 Greensand, /. e. over nearly the whole space oc- 

 cupied by the Gault, the ground here is all in 

 confusion 



"Crags, knolls, and mounds confusedly hurled, 

 The fragments of an earlier world," 



and confusion gets worse confounded every winter 

 (see p. 29). So that it is difficult, even impossible 

 to trace the order of succession anywhere except on 

 the bed of the sea itself. 



Among the most striking objects on this ancient 

 floor once again laid bare, are the lumps of iron 

 pyrites sulphide of iron, strewn about in abundance. 



