NOTES ON THE LIAS IN THE NEIGHBOURHOOD OF RADSTOCK. 185 



"We shall devote only a few words to the Camerton section as 

 as it has already been noticed by Mr. Moore {loc. cit. p. 471). 

 The excavation in the hamlet of Medycat is both stone quarry 

 and brick yard. At the top of the section are 7Jft. of stiff blue 

 clay, this is whence Mr. Moore obtained such a fine collection of 

 Foraminifera ; as this clay is well developed in the sections above 

 given at Timsbury and Ham, these organisms should be in equal 

 abundance there. The base of this clay is the Spiriferina bed, it 

 contains the same fossils and phosphatic masses that we have 

 noticed before. I did not see bed (g) in situ, from the unfavorable 

 state the quarry was in at the time of my visit ; only pieces of it 

 were to be seen on the spoil heaps, but no doubt it occupies the 

 same position as in the previous section. Below (h) are two grey 

 Limestones, the upper one is bed (i) of former sections, and contains 

 the same fossils, Lima succinda, A. sauzeanus, &c. Eelow these 

 come five beds of greyish white Limestones, separated by clay 

 partings ; these we consider to represent the Planorbis zone 

 probably. We found A. Johnstoni and Ostrea Hisingeri {liasica) 

 here, moreover we found A. Johnstoni {torus) in a grey limestone, 

 probably the bed next below (i), so that in this case the Ammonite 

 would seem to pass up into the bed above what we are disposed 

 to consider the Planorbis beds. "We must mention, however, that 

 Mr. Moore considers all these as Bucklandi series, and says the 

 Planorbis beds are altogether wanting. Perhaps this eminent 

 authority on the Lias may be induced to give us some further 

 details concerning these lower beds. Next comes the '' Sun-bed" 

 and 17 beds of Limestones making according to our measurements 

 8 Jft. of white Lias . In slabs of White Lias on the heaps we 

 found Avicula fallax, Pecten Valoniensis, Cardinia (casts) Modiola 

 minima and other fossils. 



"We proceed now to give some notes on a section on the south 

 side of Radstock, where the Planorbis beds come evidently quite 

 in contact with the middle Lias, the Bucklandi beds being 

 apparently absent altogether. Near Branch Hiiish there are two 

 quarries at least where this may be seen, — we take the quarry 

 near the Prome Railway. 



