J. G. S. vol. xxxiv.] 



[To face p. 1(>(5. 



Kamsev Sound. 



Fig. I.— Section from Ramsey Sound to St. David's. (Length 2 J miles.) 



FIiorsou. Trefaiddam. Fault. Clegyv-foia. 



E.S.E. 

 C'imhI S. of S.pIvii in 

 SL.-Bi-iuVh Bay. 



(.artn'fl valley, Fault. 



Fig. 3. — Section from Llanhowel to 

 Fault. Tremaenhir. 



Newgale. (Length 3 miles.) 



Fault. 



The numbers indicating the subdivisions of the Pebidian correspond to those in the text (pp. 157-159) : 



1. Agglomerates. 



2. Conglomerates. 



3. Porcellanitic beds. 



4. Schistose bods and breccias. 



5. Schists and slates, 

 fi. Volcanic conglomerates, indurated : 

 ashy shales. 



7. Schisls. tuffs, and indiiralod shales. 



8. Volcanic conglomerates, breccias, and indurated ashy beds 



9. Felstone. 



10. Ashy bands. 



11. Schists. 



