Quart Joum CveLSoc Vol.LKWt.PI XXW1 . 



«S — \F 



map ) LyfWM, 



ILLUSTRATING 



THE 



GEOLOGY OF THE DISTRICT 



AROUND 



CORRIS andABERLLEFENNI 



(MERIONETHSHIRE) 



WILLIAM JOHN PUGH, O.B.E..BA.EG.S. 



