44 



atone. Beds in similar succession and of about the same thickness 

 were passed through in the Batheaston coal sinking in 1811. The 

 new red marls were there shown to be 30 feet thick, beneath 

 which came 24 feet of " millstone," a conglomerate overlying the 

 coal in the Somersetshire coal basin. Coal, had it been present, 

 should next have been reached, but this was shown to be wanting, 

 by the discovery of the lower beds of the carboniferous limestone 

 immediately following the " millstone." 



Excavations and Well at the Royal Hotel. — In the excavations 

 made for this establishment, the following section was opened up 

 in descending order : — 



Historic Period : 

 Made gi'ound, or accretions from the time of the ft- "i- 

 Roman occupation, including pockets of bi'own- 

 ish marl, containing many bones of frogs, fish, 

 and other remains, and insects - - - 8 

 Drifted marl with vegetable matter, wood, &c., 



lying on the Roman foundations - - - 4 

 Pre-historic Period : 

 Fresh water alluvial clays with great numbers of 



fresh water and land shells, seeds, &c. - - 8 

 Post-Pliocene Period : 



Mammal drift gravel 4 



Lower Lias. 



Blue Clay 4 



Blue Lias Stone- - - - - - - 3 



Blue Clay 4 



Blue Lias - - - - ...03 



Blue Clay- .-.--.- 4 



Blue Lias 8 



Blue Clay 4 



Blue Lias - - 6 



Blue Clay 6 



Blue Lias --05 



Blue Clay 4 



- Blue Lias 6 



Blue Clay 8 



