INFERIOR OOLITE AT BRANCH HUlSH, RADSTOCK. 



/ / 



( Sin. j " Sunbed" pale lithographic limestone, bluish core 



2in. i Whitish clay parting. 



2ft. 7in White limestones, several courses. 



3^in. Pale brown clay shales. 



^ I 3ft. [ White limestones, split into thin bands, 



I ft. I in White marls, with thin limestone bands, 



i^ft. White limestones. 



> 



At the base are about 9-ft. of White Lias. I have given the beds 

 in full, in order to show how little lithological resemblance 

 they have to the Penarth beds 5 there is indeed objection to the 

 application of that term to the w^hite Lias beds. At some future 

 time I may recur to the subject, for the moment I may say that I 

 do not consider the White Lias to belong to the Rhaetic series. 

 They are however, indiscriminately with the true Rhaetic shales, 

 classed as Penarth beds apparently throughout tlie Survey Memoir. 



Above the White Lias come 2-ft. 4-in. of Ostraea beds (Planor- 

 bis zone) viz., five beds of '^corn grit " as they are locally termed^ 

 with some shale partings. They contain Ostrcea HisingeriQiassica) 

 and the Ammonite of the zone is found wherever the beds are 

 sufficiently quarried. At the moment of our visit no fresh stone 

 had been taken out apparently for some time. Fossils are easily 

 found in the same beds in the other quarry, and w^re mentioned 

 in the previous essay. 



Above the corn-grits, comes a bed w^ith phosphatic concretions, 

 this is the bed (e) of the former section, and is the boundary 

 between the Middle and Lower Lias (Joe. cit. p. i^"].) 



We now arrive at the ironshot limestones, classed in the 

 Survey Memoir as Inferior Oolite. The few fossils which we 

 cited, are sufficient proof that it belongs to the Jamesoni zone of 

 INIiddle Lias. The list of fossils might be easily increased if there 

 were any object in it. The beds are evidently the same as in the 

 adjacent limekiln quarry, — have precisely the same aspect, and are 

 about the same thickness. They are more fully described in the 



