Quart. Journ. Geol. Soc. Vol. LXVII, Pl. XXXV. 



Fig. 1— Igneous and Felspathic Fragments in the 

 Upper Gaerfawr Grits. 



h&s? -.■..- ■■■%> 



Fig. 2— The Welshpool Dyke. 







. 



/4. Jf., /»A^O.j 



{Bemrose Collo. 



