INTKODUCTION. 



Xl. 



Secondary Peeiod. (Mesozoic Series, Phillips.) 



Cretaceous Group. 



Wealden Group. 



Snpermedial Order. 

 (Conyheare.) 



Oolitic Group. 



Triassic Group, 



Upper Chalt. 

 Lower Chalk. 

 Upper Green Sand. 

 Ganlt. 



Lower Green Sand. 

 _ (?) Speeton Clay. 



{ Weald aay. 

 Hastings Sands. 

 Purbeck beds. 



Tipper. 

 J Portland beds. 

 \ Kimmeridge Clav. 



Middle. 

 ^ Upper Calcareous 

 Grit. Coral Eag. 

 Lower Calcareous 

 Grit. Oxford Clay. 

 Kelloway Rock. 

 Lower. 

 ' Combrash. 

 Forest Marble. 

 Bradford Clay. 

 Bath Oolite. 

 Fullers' Earth. 

 _ Inferior Oolite. 



Lias. 

 r Upper Lias Shale. 

 I Marlstone. 

 Lower Lias Lime- 

 stones and Shales, 

 r Variegated Marls. 

 ! Muschelkalk. {Want- 

 j ing in England.) 

 ^ VariegatedSandstone. 



u 



