376 



ME. A. STRAHAN ON THE GLACIATION OF 



with the directions N. 26° E. and E. 20° S. They are found again 

 in the Sychnant Pass, west of Conway, running S.E. ; but their 

 direction here has probably been determined by the form of the 

 ground. 



Lastly the prevalent direction of the striae of Anglesey has been 

 observed by Sir Andrew Eamsay * as being N. 30°-40° E. Striae 

 having the direction N. 45° E. have been observed by Mr. Morton 

 near Pentraeth t, and others may be observed on the shores of the 

 Menai Straits, near Beaumaris, as pointed out to me by Sir Andrew 

 Eamsay. Dr. E-icketts also refers to striae at Llanerchymedd 

 having " a direction towards S. 10° W. and curving round a boss of 

 rocktoS. 20°W."i 



In the diagram forming fig. 3 the striae of Coed-y-nant, Ehuallt, 



Eig. 3. — Diagy'am shoivwg direction of Strice on the Welsh Border. 



Bryngorlatt 



'- Pen-y.gelli, Ll.angoUen, &- CorTuen 



and Sychnant, and one of those at the Great Ormes Head have been 

 omitted. In the first two cases certainly, and in the third probably, 



* "How Anglesey became an Island," Quart. Journ. Geol. Soc. xxxii, p. 116 

 (1876). t Proc. Liverpool Geol. Soc. sees. 17, 1875-76. 



X Ibid. sess. 18, 1876-77. 



