1867.] 



BFETOX KH^TIC BEDS NEAR &AIXSBOEOUGH. 



317 



of the Society's Joiirnal, and at Batheaston and Westburj, as de- 

 scribed by Mr. Moore in 

 vol. xvii. of the same pub- 

 lication, forms the base. 

 At Beer Crowcomb, how- 

 ever, as described by the 

 latter, we find a pale-blue 

 stone, 1 foot 2 inches thick, 

 with vegetable -like mark- 

 ings, followed by blue shaly 

 marl, given as the lowest 

 bed of the series, which may 

 be taken as the equivalent 

 of the lowest Gainsborough 

 bed; and perhaps at the 

 well-known Aust Cliff lo- 

 cality, where the bone-bed 

 is described by Dr. Wright 

 as lying abruptly on the 

 Keuper, the stratum of pale 

 arenaceous marl, 1 foot in 

 thickness, which, though 

 placed by him on the top 

 of the Keuper, in tex- 

 ture apparently resembles 

 the lowest Ehsetic bed of 

 Gainsborough, may be an- 

 other of its equivalents. 

 This, however, I hazard 

 only as a conjecture, and 

 on the slight supposition 

 that the fossils of the Ehaetic 

 type, should it contain any, 

 are so few as to have hi- 

 therto escaped observation. 

 Following the line in a 

 southerly or south-easterly 

 course towards Lincola, 

 which coincides with the 

 direction of the dip, we 

 find in corresponding order 

 the various beds of the 

 series laid bare, the next of 

 which, No. 2 in the section, 

 consists of a stratum of 

 black fissile shale, 8 feet in 

 thickness, containing nests 

 of pyrites, and having se- 

 veral thin, non-continuous 

 veins of grey pyritous stone imbedded in it. 



Keupti flails 



The main bulk of this 

 z2 



