Reports and Proceedings — Geological Societ// of London. 329 



the Megalaspis gigas zone = Bj Vaginatenkalk of Eussia; Stage 2 

 may especially be compai'ed with the Echinospheiite Limestone ; 

 and Stage 3 probably partly representvS the upper part of this 

 Limestone and the lower part of the overlying Kuckers Shales C2. 

 The Didt/mograptiis-shales have not yet been identified, though it is 

 just possible that the Tramore Slates may represent them. 



The Raheen Shales of Newtown Head contain Orthis argentea in 

 abundance, and may be compared with the 0. argentea zone, which 

 in South Wales comes above the Dicranograptiis-&\vd\e&. But these 

 beds also contain species peculiar to them, and others with a 

 Scandinavian or Russian affinity ; and the shales may be compared 

 with the upper part of Tullberg's Series E of the Middle Graptolite 

 Shales. The occurrence of this East European Lower Ordovician 

 fauna in the western part of the British Isles is of great interest 

 with reference to questions of ancient bio-geographical provinces; 

 and it seems to require that the coastline along which this littoral 

 fauna flourished stretched round from Scandinavia so as to approach 

 the south-eastern corner of Ireland, while deeper- water conditions 

 coexisted in Wales and England. Volcanic activity began about 

 the period of the accumulation of the Dlcranograptus-^hdles, near 

 Tramore, and possibly earlier at Raheen, where it also continued till 

 after the Oithis argentea beds had been deposited. 



II.— May 24, 1899.— W. Whitaker, B.A., F.R.S., President, 

 in the Chair. 



The President called attention to the issue of vol. iii of Hutton's 

 ''Theory of the Earth," and said that the thanks of the Fellows 

 were due to Sir A. Geikie for having edited and annotated most 

 carefully this work. The volume was printed from a previously 

 unpublished manuscript which had been for many years in the 

 possession of the Society : its contents were extremely interesting, 

 and it supplemented the previous volumes by the inclusion of an 

 index to the whole of the work, prepared by Sir A. Geikie. 



Professor Seeley exhibited a cast from a footprint obtained by 

 Mr. H, C. Beasley from the Trias at Stourton. The impression is 

 about 1^^ inch long, and nearly as wide. The cast has been treated 

 by oblique illumination, so as to display its osteological structure by 

 means of the shadows thus thrown. All the claws are directed 

 outward, as in a burrowing animal. The form of the foot resembles 

 that of a monotreme mammal rather than that of any existing reptile. 

 There appears to be a slender pre-pollex including three bones. The 

 only other example of this structure in the Trias is in the Theriodont 

 reptile Theriodesmus, in which it is less definite. This character 

 may add to the interest of other footprints from Stourton, which in 

 the form of the foot approximate to Auomodout reptiles from the 

 Karoo Beds of Cape Colony. 



The following communications were read: — 



1. "On the Distal End of a Mammalian Humerus from 

 Tonbridge." By Prof. H. G. Seeley, F.R.S., F.G.S. 



