JSNGLISU CHALK DOWNS. 211 



sandstone hills that underlie it have been exposed 

 to the undermining action of t.ie landsprings and 

 billows. Thus the whole of Southeastern Eng- 

 land bears everywhere the '" * ess of the white 

 sheet deposited on its surface so many ages since 

 under the forgotten waters of some vaguely limited 

 and long-vanished sea. 



