298 The Irish Naturalist November, 



mouth, and only the absence of any official leader to the ex- 

 pedition prevented a formal vote of thanks being accorded on 

 the spot. Mr. A. Hogg's excellent lantern slides, taken on 

 previous occasions underground, were exhibited at Tuesday's 

 meeting of the Geological Section. 



Tuesday, September 16. 



LiSBURN. — lyeader— J. R. Kilroe. A party of eight were 

 conducted over the esker and glacial gravels, Mr. Kilroe 

 pointing out the important deductions made on his recent 

 survey of the district. The examination of the esker was 

 commenced about one mile N.W. of I^isburn, and following 

 the tortuous course S.W. and then W. its similarity to the 

 course of a river became evident. It was also apparent that 

 the gravel forming the ridge had been laid down in a sub- 

 glacial tunnel excavated by a river flowing westward. This 

 direction of flow was indicated by the fact that there exists 

 a fan of gravel three miles west of T^isburn formed in what 

 was original^ a lake into which the sub-glacial river 

 flowed. It was pointed out by the conductor that the esker 

 was a very typical one, with a narrow top, steep sides, and 

 continuous. The party examined with interest the sections 

 in the esker exposed in numerous gravel pits, and obtained 

 several specimens of the Ailsa Craig riebeckite rock which is 

 so widely scattered over this district. 



RouGHFORT. — A party of twelve visited Roughfort, and the 

 kistvaen known as Cairn Graine, under the guidance of Mr. 

 Gray, who pointed out the relation of the kistvaen to the 

 other rude stone monuments of the county. 



Wednksday, Skptembkr 17TH. 



Colin Glen. — On Wednesday afternoon, 17th instant, the 

 majority of those who had supported the Botanical Section 

 through five days of paper-reading went off to Colin Glen, 

 headed by their President, Professor Reynolds Green, and con- 

 ducted by their local Secretary, Rev. C. H. Waddell, and by 

 S. A. Stewart. Showery weather did not interfere with the 

 enjoyment of the party. The lower glen was explored. Though 



