in Nokth Wales — {continued). 



i the Ascending Order. See Sec. IV. 



Ascending Order. See Sec. VI. 



]0. 



11. 



12. 



raig-y-Glyn. 



Pont-y- 



Mtibion to 



Bwlch Llan- 



drillo. 



+ + + 



+ + 

 + 



+ + 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



+ 





+ 



+ 



+ 



+ + 







+ 





+ 





+ + 



Glyn- 

 Ceiriog. 



+ + 



+ 

 4- + 



+ 

 + 

 + 

 + 



+ 

 + + 

 + + 



+ 

 + 

 + 

 + 

 + 

 + 



13. 



14. 



Extracted from the next 

 List of Fossils. 



15. 



Pen-yCraig Pen-y-Craig 

 Limestone. : Calcareous Shale 



+ + 



+ + 



+ + 



+ + 

 + + 



+ + + 

 + 



+ + 



+ + 

 + 



+ 

 + 



+ + 



+ 



+ + + 



+ + 



+ + + 



Of the foregoing Species 



the following are 



found also in the Upper 



Silurian rocks of 



N. Wales. 



Observations. 



Llandillo Flags. 

 Llandillo Flags. 



Llandillo Flags. 



Llandillo Flags, 



