204 PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jan. 8, 



is the most prolific in fossils. Of these, Lima tuberculaia, L. Dun- 

 ravenensis and L. gigantea are the most common. 



The whole of these beds are full of Ostrea liassica. 



Immediately under the 11th bed is 



12. PhoIidopJiorus-bed. — This is a blue conchoidal limestone, 

 well known as containing the elytra of beetles and several species 

 of FhoUdophorus. 



13. Johiistoni-heds. — These are shaly limestones, containing Am- 

 monites JoTinstoni, and from that cii^cumstance are worthy of mark. 



14. White Lias. — On this hill the TThite-Lias beds are very insig- 

 nificant, being only two feet thick They contain, however, an 

 abundant supply of Modiola minima, Alonotis decussata, Mya- 

 cites, &c. 



Although thin, these beds are very well marked, and lie just 

 above the 



15. Cothcnn Marble, — This is perhaps better known as the land- 

 scape stone, having markings of manganese resembling trees, (fee, 

 and is sold for ornamental purposes. 



This last bed rests upon the Keuper marls, which here attain a 

 pretty good thickness. 



As before mentioned, the Avicida-contorta beds of the Ehaetic 

 series are here absent, although so well developed a few miles off at 

 Almondsbury, where, singTilarly enough, the Gotham marble thins 

 out as the Rhaetic beds thicken and increase. 



2. On the Lowee-Lias beds occurring at CoTBA.:yr, BEDMiifSTEii, and 

 EJEYNSHAii, near Bkistol. By C. 0. Geoox-Xapiee, Esq., P.G.S. 

 (Abstract.) 



The author first describes two quarries at Gotham exhibiting the 

 following sections : — 



I. Quarry at the bach of Dundry Villa. 



ft. in. ft. in. 



1. Son from 10 to 1 2 



2. Argillaceous loam 10 to 1 2 



3. Shaly limestone containing CypHs liassica and Chondrites 



liassinus 1 3 to 1 



4. Pale-blue limestone containing casts of Littorina, Lima 



'punctata, 8{c 6 



5. Ferruginous sandy Lias (Planorbis-bed) containing abun- 

 dantly Aynmonites planorhis, and less commonly A. John- 

 stoni\ also^. tortilis, A. torus, Solarium lenticidare, Turho 

 suhelegans, Cerifhium Sernele, Fleuromya liassina, Cidaris 

 Edwardsi, Fecten calvu-s, Ostrea liassica, Li^na succincta, 

 L. tuhercuJata, L. acuticostata, L. Hettangiensis, L. ewal- 

 tata, Avicula, spec, nor., Vnicardium cardoides, fragments - 

 of the bones oi Ichthyosaurus, Flesiosaurus, and their teeth, 

 rarely Terehratula perforata, Mytiliis minimus, and M. Hil- 



lanus 3 to 4 



6. Hard grer sandstone with quartz grains thickness unknown. 



7. Clay 9 to 1 



