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tained, with a great show of evidence, that the Cheddar ravine was cut out 
by marine agency. If this were so, the upper part of Brent Knoll during 
that period must have been above the water, and these terraces would pro- 
bably be contemporary in formation with the highest and oldest portions of 
that remarkable gorge. 
The lower series of terraces is on the side of the hill towards South Brent. 
The stages are more numerous than those in the upper set, and occupy the 
whole declivity from the edge of the great platform to within twenty feet of 
the base of the hill. There must be thirty or more of them, and like the 
others they vary much in height and breadth. The hill side is somewhat 
hollowed out here and there by small ravines, and the terraces mostly follow 
these inequalities of the ground, and show that the hollows have not been 
altogether formed by more modern agencies. The lowest stage being some 
twenty feet above the plain, corresponds notably in height with the raised 
beaches of Woodspring and Birnbeck. The occurrence of drift on some of 
the summits of the Mendip range, is evidence of the presence of the sea, at 
still greater heights than those I have alluded to, but to this I have not paid 
sufficient attention to enable me to speak with precision upon it. 
The evidences I have adduced of alteration of the sea level in a distance of 
ten miles in extent in geologically recent times, are briefly these : — 
1 . Raised beaches at Woodspring Hill, and Birnbeck Cove, and lowest 
terrace on Brent Knoll, twenty to thirty feet above mean sea level. 
2. Sand Dunes in Kewstoke bay, and Birnbeck Cove, and on Brean Down, 
ranging to one hundred and fifty feet. 
3. Sea washed rocks on Worle Hill provisionally correlated with the great 
terrace on Brent Knoll, about one huudred and fifty feet. 
4. Terraces on Brent Knoll to four hundred feet. 
The reading of Mr. Ravis's paper concluded the proceedings. 
