nber 1909.] 



[ f the North CardigaI 



[To face p. 530. 



tayader 

 istrict. 



R parts of Britain. 



jlake District. Haverfordwest. 



layader 

 Pale 



Slates. 



Talerdd 

 G 



)■ Bryil 



Lower Browgill 

 Beds. 



J 



n Group. , |. TwjjPP er Skelgill Bed*. 



nformity. 

 den Group. 



jddle Skelgill Beds. 



-black shale. 



Dolg 



"?Ga 



Facl Ver SielgiJl Beds. 



? Ashgillian. 



I Lower part of 

 j Lower Llandovery. 



?Redhilland 

 i Slade Beds. 



