UPPER PORTION OF DUNDRY HILL. 207 



distance, — for the Ironsliot Oolite is found in an arable field 

 only 7 furlongs to the west — there was originally at Maes 

 Knoll a sequence of deposits similar to that found in the 

 middle of the Hill (see Section III.). 



This denudation, no doubt, was in progress partly during 

 Bajocian time, and therefore it was contemporaneous with 

 what was called" Bajocian denudation " by one of us.^ But 

 it is evident that the progress of erosion was continued into 

 Bathonian time, and that the conglomerate bed of Maes 

 Knoll ,was largely formed out of derived materials during 

 the time of a post-Bajocian or Bathonian denudation. 



We give details of another exposure — on the eastern side 

 of the hill — because it is remarkable for one thing — the 

 absence of the Marlstone ; so that at this, the extreme 

 eastern point, was found a condition of things similar to 

 what obtains at the western end of the hill. 



Section Y. 



The Eastern Tortion of the Hill : — B. The eastern side of Maes 



Knoll. 



Maes Knoll, on the eastern flank, overlooking 



New Barn Farm. 



ft. ins. ft. ins. 

 DuMORTiEEi.E. 1. Stiff, greenish clay with argillaceous 



sandstone, extending up the hill. 



2. Pale, yellowish-green sandstone, frag- 



ments of BiLinortieria aft", prisca, 

 Dum. aff. radians, Hndlestonia aff. 

 serridens 6 



3. Bluish and yellowish clay 2 G 



— 30 



DisPANST. 4. Yellowish, argillaceous sandstone ; 



Hammatoceras, sp 5 



1 See S. S. Buckman, ' The Bajocian of the Mid Cotteswolds,' Quart. 

 Journ. Geol. Soc, vol. Ivi. (1895), p. 431. 



