230 Geology. 



and " floor " of the workings, abound in shells and corals. 

 The upper beds on Hampton rocks are so rich in remains 

 that Charles Moore used to say " They were alive once,*' 

 and from them he gathered a rich collection of sponges, 

 polyzoa, corals, and brachiopoda, now in our Museum. From 

 the upper beds on the opposite side, Mr. Walton ob- 

 tained his Microsolena. Indeed, the upper beds, as de- 

 veloped especially on the Farley Down escarpment, seem to 

 be one great coral reef. Some very good instances of false 

 bedding or current action occur, especially near the top of 

 the hill overhanging Warleigh Manor in the Avon valley, and 

 in the quarry on Banner Down. The quarries on Combe 

 Down have the character of containing the best weathering 

 stone, and Mr. H. B. Woodward tells us that the stone from 

 Lodge Hill, Combe Down, was selected for the restoration 

 of Henry the Seventh's Chapel, whilst the stone from Bayn- 

 ton quarry was used in the construction of Windsor Castle, 

 and that from Drewe's quarry in building Buckingham 

 Palace. The following is a section of Baynton Quarry : — 



ft. 

 Rubble Stine ... ... ... 16 



Scnllet (finest gr.iin used for .^Fhlar) ... 12 to 154 



Black and white rag ... ... ... 5 n '° 



Corn grit (used for Dressings) ... ... 15 , 20 



Ground stone ... ,.. ... 16 „ 22 



The Bradford Clay, a local deposit, so-called 

 '^cif""^ from its development at Bradford, near 



Bath, comes next. It may be considered as 

 forming a portion of the Forest Marble, being hardly dis- 

 tinguishable from the bands of clay intervening between the 

 shelly limestone beds, where this formation is more fully 

 developed than it is on our hills. It consists of a pale-blue 



