[To face -p. 10(5. 



St.-David's vallev. 



Fault 



Porth-y-rliaw. 



E.S.E. 

 Coast S. of Solva in 

 Sfc.-Bride's Bay. 



Menevian. 



Lingula-flags. 



Fault. 



S.8.E. 



Cwm Bach, near Newgale, 

 in St. -Bride's Bay. 



ian. Lingula 



rates, breccias, and indurated ashy beds. 



Mene- /I Harlech Bebiciian. 



vian. * Group. 



