760 THE GEEENSAND BED AT THE BASE OF THE THANET SAIO). 



else, does not give any reason for thinking that the chalk was 

 quite cut through in the middle of the Wealden area before the 

 deposition of the Tertiary beds. If there were no strong currents 

 to bring material from the other coasts, such a shore would be just 

 the place for the accumulation of sand largely consisting of flint. It 

 is true that the succeeding beds have a flint-percentage of about 5, 

 and cannot have been formed in a sea with very different shores ; 

 but it is possible that they are really contemporaneous beds 

 formed further out to sea, which crept westwards after the flint- 

 sand, the flint-sand always being formed against the clifi's. 



DlSCTTSSIOIf. 



Dr. Hno)E considered the paper important as showing the great 

 amount of minute particles of flint present in these sands. It 

 was a matter for regret that the Authoress could not be present 

 when the paper was read. 



