VOL. XVIII. (i) WELL-SINKING ON LANSDOWN, BATH 87 



In conclusion, then, my object has been to draw attention 

 to the following facts : — 



1. The thinness of the beds representing the strata from the 



top of the Fullers' Earth to the incoming of the Forest 

 Marble on Lansdown. ' 



2. The rigid line of division between the Fullers' Earth and 



the lowest bed of the great Oolite. 



3. The absence of Fullers' Earth Rock so far as at the depth 



of 84 feet.' 



4. And the difficulty in accounting for the difference of level 



between the corresponding beds on the north and south 

 sides of the Avon Valley. 



I. According to a record of a well section at Beckford's Tower, oil Lansdown, noted by 

 Bristow, the Fullers' Earth was only 70 feet thick. 



