GEOLOGY OF THE BRISTOL COAL-FIELD. 



Section at Lock's Mill, Continued. 



Ft. In. 



Clay, with Modiola ... ... ...03 



Limestone, with Modiola and Cardium .. 04 



Clay ... ... ... ... o 4 



Brown Limestone, with [[Insects, Coleia, 



Naiadites, Fish, and Modiola ... ... o 6 



Clay ... ... ... ... I 6 



Limestone, with Ostrea and Modiola ... o 8 



Clay ... ... ... ... o 1 



Limestone, with Monotis ... ... o 6 



On Bedminster Down^ near a road side well, is a cream coloured 

 bed full of most exquisite little water plants, the Naiadites petiolata 

 resembling in appearance the common Ranunculus aquatilis. The 

 minute venation of the little leaves is most perfectly sculptured. 

 They still are seen mixed with the little Candonos that swarmed 

 on the muddy bottom between the stem of the plants. 



