[Quart. Journ. Geo/. Soc. vol. xvi., to face 



ES, DRAWN UP BY . 



Pj 



TOEJ 



Volutions concealed. 



Back smooth, entire. 



ii dividing from a tubercle. 



( London Clay 



Chalk : 



Greensand 



Brick-earth 



Swindon and Portland . 



Oaktree Clay 



Clunch and Shale 



Kelloways 



Cornbrash 



Fuller's Earth 



Under Oolite 



Sand 



Marlstone 



Blue Marl 



Lias 



I Mountain Limestone 



27 28 29 | 30 31 32 



34. 



s T eai 

 moi 



Note (1) The Table was drawn up previous to 

 deposit ; it was from the Upper Lias of Whitby, i 



t- -- 



..Pc- 



*flr 



Tar 



is of Ammonites — some pro 

 In the original, each speci posby S: 

 ,n™es Kscri 

 ed 



