September, 1907 \Q 



PROCEEDINGS 



OF THE 



ROYAL IRISH ACADEMY 



VOLUME XXVI., SECTION B, No. 10 



J. E. KILROE 



THE SILURIAN AND METAMORPHIC 

 ROCKS OF MAYO AND NORTH GALWAY 



DUBLIN 



HODGES, PIGGIS, & CO., Lid. 

 LONDON : WILLIAMS & NOEGATE 

 1907 



Price One Shilling. 



