Abstract
LONDON. Geological Society, November 20.—Dr. Aubrey Strahan, F.R.S., president, in the chair. H. W. Monckton: The Hafslo Lake and the Solvorn Valley (Norway). The district lies north of the main Sogne Fjord and west of the Lyster Fjord. A series of valleys running from the area of the Jostedal snow-field and cutting the belt of Silurian rocks which crosses the district in a north-easterly and south-westerly direction, and a second series of valleys which run parallel to the snowfield and to the Silurian belt, are described. The valley of the Vejtestrands Lake, which belongs to the first of the above series, is traced until it reaches the Hafslo Lake, which lies at a point where the valleys of the two series intersect. The present line of drainage follows a valley of the second series from the lake to the fjord, but a disused outlet from the lake to the fjord is described belonging to the first series. While the disused outlet is probably the older of the two, reasons are given for believing that both outlets were in use during the latter part of the glacial period. Some giants' kettles, which for various reasons are believed to date from a time when the glacier extended to the places where they are now found, are described, and it is suggested that they were the work of a river flowing under the ice or between the ice and the rock.—S. Smith; The genus Aulophyllum. Aulophyllum is a genus belonging to the Clisiophyllid group. It is found in the upper beds of the Carboniferous Limestone Series in Britain and on the Continent. It appears in the lower part of the Dibunophyllum zone (D1), becomes common in the middle subdivision of the zone (D2), and is plentiful in the highest limestones investigated (D3). The coral was described first by David Ure, in 1793, as Fungites; the genus was established by Milne-Edwards and Haime in 1850. In this genus Thomson's genus Cyclophyllum is included. All the species previously described are regarded as variations of the same species. Many specimens of the coral display the phenomenon of rejuvenescence. The structural changes observed are described, and the nature of the rejuvenescence is discussed.
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Societies and Academies. . Nature 90, 427–429 (1912). https://doi.org/10.1038/090427a0
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DOI: https://doi.org/10.1038/090427a0