35° 



[Proc. B.N.F.C. 



and specimens of the lithoidal type of Tardree dome, of the 

 beautiful perlitic types of Sandy Braes, and of the dark red 

 pitchstone of Carnearney, were obtained. 



On the Armagh excursion interesting dykes of basalt tra- 

 versing the Carboniferous limestone at Carrickaloughran were 

 examined, and many fossils were obtained there and at Navan ; 

 the glacial deposits of the district were also investigated. 



The excursion to Portrush included a study of the V-shaped 

 hollow in the Chalk, filled with spheroidal basalt, at the " White 

 Rocks ; " a fine section of columnar basalt, passing upwards into 

 tabular basalt at Craig-a-hulliar quarry ; and an examination of the 

 indurated Lias at Portrush, of great historic interest in connection 

 with the controversy between the Vulcanists and Neptunists. 



At Magheralin some very fine Chalk sections were visited, 

 and the boulder-clay of the district was examined. No excursion 

 was more enjoyed or more fruitful in results than the last of the 

 season to Kilcoan, Island Magee. Numerous fossils were obtained 

 from the Chalk and Lias, and interesting glacial observations 

 were made. 



The Winter lectures were most successful. Mr. Strachan 

 opened the Session with a valuable communication on " The 

 Onyx of Spanish Bay, Giant's Causeway." In January Mr. S. A. 

 Bennett, B.A., B.Sc, gave a graphic description of the Lower 

 Carboniferous rocks of the North Stafford Coalfield, his paper 

 being illustrated by rock specimens and fossils from the district. 

 On the same evening Mr. Robert Bell showed a fossil coral new 

 to this district, discovered by him in the Angnlalus zone of the 

 Lower Lias at Hillsport, and determined by Mr. Lang to be 

 Isaslrcza endothecata (Duncan). 



Dr. A. R. Dwerryhouse, F.G.S., gave in February an important 

 paper on "Glacial Lakes and their Overflow Channels," illustrated 

 with lantern slides. After citing the "Merjelen See" as an example 

 of existing lakes whose waters are held up by a dam of glacier 

 ice, he described examples of deserted overflow channels in 



