680 



REPORT OF NATIONAL MUSEUM, 1904. 

 Development of Geological Column — Continued. 



Conybeare and Phillips, 1822. (English.) 



Eaton, 1830. 



Superior order 



Supermedial 

 order. 



Alluvial, diluvial. 



Regular strata above the chalk, 

 including upper marine (Suf- 

 folk crag, Bagshot sands) fresh- 

 water formations. 



London clays, plastic clays, and 

 sands. 



Chalk. 



Chalk marl. 



Greensand. 



Weald clay. 



Purbeck beds. 

 Portland oolite. 

 iKimmeridge clay. 



Middle OolitefCoral rag. 

 division. (Oxford crag. 



I Corn brash. 

 Stonerield slate. 

 Forest marble. 

 Great Oolite. 

 Lias. 



New Red Sandstone. 

 .Magnesian limestone. 



Upper Oolitel j 

 division. »- 



J Coal Measures. 

 Millstone grit and shale. 

 .....Carboniferous or Mountain 

 order. limestone. 



lolil Red Sandstone. 



IV. Analluvian. 



•• n: B8KE TtaL 



