THE 



SCIENTIFIC PEOCEEDING-S 



OF THE 



ROYAL DUBLIN SOCIETY, 



YoL. TIL (New Series). OCTOBER, 1881. Part IV. 



■ CONTENTS. 



XIX. Notes on the Tertiary Iron Ore Measures, Glenaritf \'ulley, 

 County Antrim, by Philip Abgaxl. Plates 16, 17, "18, 

 and 19, . . . . . . . . . .151 



XX. "Black Sand" in the Drift North of Greystones, Co. 



Wicklow, by Gerrabd A. Kinahait, . . 165 



T*« AuthoTB alone are responsible for all opinions expressed in their commumcations. 



DUBLIN: "~ ' 



PUBLISHED BY THE EOYAL DUBLIN SOCIETY. 

 PRINTED BY ALEX. THOM & CO., 87. 88, & 89, ABBEY-STREET, 



THE queen's printing OFFICE. 

 FOR HER MAJESTY'S STATIONERY OFFICE. 



1881. 



