ALUM BAY AND HEADON HILL. 



155 



i 







-2 ^ ' 





55 



are lying in this position. 

 The footpath that leads from 

 Grove's hotel, down the chasm 

 by which Headon Hill is sepa- 

 rated from Alum Bay, reaches 

 the sea shore at the point 

 marked b, in lign. 11, and 

 which is indicated by the two 

 upper figures in PL IX. The 

 visitor, therefore, upon arriving 

 on the strand, has the horizon- 

 tal freshwater series on the 

 north, and the vertical marine 

 beds on the south, flanked by 

 the lofty chalk cliffs of High 

 Down, and The Needles. 



At Alum Bay, as at White- 

 cliff, the lacustrine and fluvia- 

 tile deposits are the upper- 

 most series {lign. 11, a,); the 

 strata most decidedly marine, 

 comprising the London clay, 

 occupy a vertical position, and 

 are the middle series {lign. 11, 

 c,)\ the group denominated the 

 Bognor strata, being the lower- 

 most ; then follow the mottled 

 i 



