496 THE EOCENE DEPOSITS OF DOKSET. [Allg. 1 896, 



was evidence founded on superposition of strata in well-sections or 

 otherwise to show that the gravels are really of Beading or Bagshot 

 age. 



Mr. H. B. Woodward considered that the Author had proved his 

 contention with regard to the composition of the Bagshot gravels. 

 He had seen the gravel on Blackdown (Portisham), and, having 

 found blocks of greywether in it, he had taken it for Drift. He 

 was now prepared to believe anything ; but he would ask the Author 

 to state how he distinguished between the outliers of Bagshot gravel 

 and those of Drift gravel, as the question of the overlap of the 

 Bagshot Beds depended greatly thereon. 



Mr. R. S. Heeries said that there were several points of interest 

 in this paper, such as the continued thinning of the London Clay 

 towards the west, and the remarkable persistence in the thickness 

 of the Reading Beds in spite of their changed character. The 

 evidence of the Reading or Bagshot age of the gravels did not seem 

 quite conclusive, and it might turn out that they were later still. 

 The conclusion that the materials of which they and the later 

 gravels are composed were derived from the west was most in- 

 teresting, and there seemed every reason to suppose that it was 

 correct. 



Dr. Gr. J. Hiktde also spoke, and the Author replied. 



