STRATIGRAPHICAL* 



35 General. 



40 Archaean. 



45 PalEeozoic. 



b^ (1) Lower (Cambrian, Ordovician [Lower Siluriiiu], 



and Silurian [Upper Silui-ian]). 

 55 (2) Upper (Devonian, Carboniferous, and Permian). 



60 jMesozoic (Secondary). 

 65 (I) Triassic. 



70 (2) Jurassic. 



75 (3) Cretaceous. 



80 CffiDOzoic (Tertiary). 

 85 (1) Lower (Eocene and Olio-ocene). 



90 (2) Upper (Miocene and Pliocene). 



95 Pleistocene and recent. 



98 Maps. 



99 Surveyiug". 



* Smaller stratigrapliical divisions than tliosc ailopled in this Schedule 

 arc probably desirable, but it is Tcry difficult to devise a scheme that would 

 meet witli general acceptance. If the divisions accepted for the Inter- 

 national Geological Map of Europe are used, the additional numbers 

 required can be easily intercalated. 



