1896-97.] 3*9 



boulder clays in our district could only obtain a negative, no 

 such difference having as yet been satisfactorily established. 



The area of distribution for Ailsa Craig riebeckite-eurite has 

 been largely extended during the past year, specimens having 

 been found as far west as Portrush by R. Welch, who also 

 obtained two specimens when dredging in 45 fathoms off 

 Rathlin. These three erratics were submitted to W. W. 

 Watts, f.g.s., of Jermyn St. Museum, through whose kind 

 offices specimens of the riebeckite-rocks of Skye and Ailsa were 

 obtained last year ; his verdict is that all three are from Ailsa 

 Craig, the other specimens have been examined by Prof. Cole. 

 The dredged pebbles present the intensely worn and rounded 

 appearance usual in these Ailsa erratics. A. G. Wilson 

 found the eurite in the esker sands of Ballylesson, Robert 

 Bell in Colin Glen, at Glenavy, in esker gravels near Antrim 

 and in boulder clay on the Black Mountain, Miss M. K. 

 Andrews on the shore at Kilkeel, whilst a specimen was 

 extracted by the writer from the boulder clay in Dromore 

 brickfield. Owing to unforeseen delays in tabulating the results 

 of last season's glacial observations it is unfortunately necessary 

 to reserve the lists until next year's report. 



GIFTS TO THE SECTION. 



The thanks of the section are due for the following valuable 

 gifts :— 



Coombe, Barbour & Coombe, Rock -Slicing Machine. 

 Professor Grenville A. J. Cole, M.R.I.A., F.G.S., Specimen of 

 variolite from Dyke near Annalong — •' The Rhyolites of County 

 Antrim, with a note on Bauxite." Sc. Trans. Roy. Dub. Soc, 

 Vol. VI. (Ser. II.). /. Nolan, Geol. Survey of Ireland ; 

 New Index Map of Ireland, with districts included in memoirs 

 specially coloured by hand. H. M. Platnauer, York 

 Museum, Erratic of Shap Granite found in Yorkshire drift, 

 (per Miss M. K. Andrews.) F. W. Lockwood, Collection 

 of Fossils from Red Crag of England. J. 0. Campbell, B.E., 

 Granite from Shap and Ross of Mull. R. Bell, Collection of 



