Proceedings for Session 1886-87

Abstract

Society's Rooms, 207 Bath Street,14th October, 1886. Mr. John Young, F.G.S., Vice-President , in the Chair. Mr. Robert Dunlop exhibited specimens of Aviculopecten papyraceus , Goldfuss, Orthoceratites , sp., and other marine fossils, which he had lately discovered in the Upper Coal measures, at Calderbank, Airdrie, the horizon lying between the Kiltongue and Virtuewell Coals—a most interesting find—going to prove that certain thin layers in the Upper Coal series had been laid down under marine conditions. Remarks were made by the Chairman, who pointed out that similar thin marine bands had been recorded elsewhere from the Upper Coal measures of Lanarkshire, and from the Coalfields of Fife and of England, proving the presence of the sea over these areas during short intervals of time during the deposition of the strata of the Upper Coal measures. Mr. James Thomson, F.G.S., stated that in his belief there was no proof that these shells, though of marine origin, had been deposited in these beds under any conditions but fresh water ones. The Chairman exhibited slabs of Carboniferous Limestone Shale, covered with markings of Dendritic “Wad” or Black Oxide of Manganese, from Nettlehirst Quarry, Barrmill, Ayrshire, and spoke of their occurrence and origin. Mr. James White read a paper entitled “Notes from Glencoe,” which was illustrated by a map of the district and a number of rock specimens. Some discussion on points raised in the paper ensued. Annual General Business Meeting, 11th November, 1886. Mr. William Jolly, F.G.S., Vice-President , in the Chair. The Hon. Secretary (Mr. Murdoch) This 250-word extract was created in the absence of an abstract