Wright and Muff — Pre-glacial Raised Beach. 269 



Quartz porphyry (three specimens). — Similar to rocks from 

 County Waterford. 



Spherulifcic felsite.— Rocks like this occur one-eighth of a 

 mile east of Knockmahon ore yard (County Water- 

 ford), near Geneva Barracks, Arthurstown (County 

 Waterford), and near Arklow Head. 



White granite, with drusy cavities. — Mourne Mountains. 



Bally cottin Bay. 



Granite, with yellow felspars. — Like specimens from Great 



Saltee Island. 

 Coarse red granite. — Carnsore, County Wexford. 

 Banded gneiss. — Wexford metamorphic rocks. 



Toughal Bay. 



Riebeckite-eurite (three specimens). — Ailsa Craig. 

 Gneiss. — Wexford metamorphic area. 

 Augite-granophyre.— Slieve Foy, County Louth. 



Whiting Bay. 



Riebeckite-eurite. — Ailsa Craig. 



Felsite, with inclusions. — Like a rock from Stradbally, 



County Waterford. 

 Agglomerates and ashes (several large boulders). — Silurian 



area of County Waterford and Wexford, or Croghan 



Hill, Philipstown, King's County. 



Ballymadder. 



Spherulitic and nodular felsites (several large boulders). — 

 Possibly Arklow Head. 



Associated with the marly boulder-clay are fine yellow sands, 

 which are best exposed in Youghal and Ballycottin Bays. 



The distribution of the marly boulder-clay from Ballycroneen 

 Bay, County Cork, into County Wexford, and thence to the 

 neighbourhood of Dublin, has already been mentioned. 



The boulder-day of the inland ice, which overlies the head west 

 of Ballycroneen Bay, and the marly boulder-clay east of the bay, 

 is a stiff clay full of Old Red Sandstone and Carboniferous Rocks, 

 and does not show any sign of lamination. The stones lie in all 

 positions in the clay, and exhibit varying degrees of rounding. 



Y2 



