THE 



SOIENTIFIG PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Vol. III. (New Series). APRIL, 1881. Part II. 



CONTENTS. 



Page 



VI. On the Geological Structure of the Northern Highlands of 

 Scotland ; being Notes of a Recent Tour. By Edward 

 HtJJLL, LL.D., F.R.S., Director of the Geological Survey 

 of Ireland. Plates 9, 10, and 11, 34 



VII. Cork Rocks. By G. H. KiNAHAif, M.R.I.A., &c., . . 47 



VIII. On the Physical Units of Nature. By G. Johnstone 



Stoney, D.Sc, F.R.S., Secretary to the Society, . . 51 



The Authors alone are responsible Jbr all opinions expreitsed in thevi' communications. 



OCT 4 mi 



DUBLIN: ^"--,!l!Jlll!!i--^ 



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. 



