502 [Proc. B.N.F.C., 



a few localities in Southern Armagh, Tyrone, and Monaghan, 

 as the ubiquitous erratics of Ailsa Craig have been discovered as 

 far inland as Newry, Armagh, Killagan, and at the mouth of 

 the Bann. It seems desirable to push the search into the above- 

 named Counties, and if necessary throughout the entire 

 province. The flow of the ice can be accurately determined by 

 studying the distribution of erratics, as we are fortunate in 

 possessing several peculiarly characteristic rocks that serve as 

 landmarks in oui drifts. It is encouraging to see even a remote 

 prospect that the work of the past six years may be brought to 

 a conclusion. 



A collection of unknown erratics which had accumulated 

 during the past three years, was recently submitted to Mr. A. 

 M'Henry, M.R.I.A., for identification ; with his usual kind 

 promptitude he returned them with notes of their parent 

 localities, which proved both interesting and important. 



In a chat on Glacial fossils Mr. Praeger described the great 

 prevalence of shells and shell fragments in the glacial deposits 

 of the Dublin district and exhibited a fine collection which he 

 subsequently presented to the Club. Especially noteworthy is 

 Mr. Praeger's mention that as yet they have not been found in 

 the Central Plain of Ireland, being hitherto confined to 

 localities not more than 3 miles distant from the present sea- 

 board. 



The Schedules of results obtained up to the present are open 

 to the inspection of members, but it seems scarcely desirable to 

 publish a detailed list until the remaining localities have been 

 finally examined. 



A paper describing the year's work is annually read before 

 our Geological Section, and an abstract of the last three years' 

 work can be furnished to the Erratic Blocks Committee of the 

 British Association this Autumn. 



SYDNEY M. THOMPSON. 



