[ 312 ] 

 XXX. Proceedings of Learned Societies. 



GEOLOGICAL SOCIETY. 



[Continued from p. 150.] 



December 21st, 1892.— Prof. J. W. Judd, E.R.S., Vice-President, 

 in the Chair. 



r PHE following communications were read : — 



-*- 1. " On a Sauropodous Dinosaurian Vertebra from the Wealden 



of Hastings." By R. Lydekker, Esq., B.A., F.G.S. 



2. " On some additional Bemains of Cestraciont and other Pishes 

 in the Green Gritty Marls, immediately overlying tbe Bed Marls of 

 the Upper Keuper in Warwickshire." By the Bev. P. B. Brodie, 

 M.A., F.G.S. 



3. " Ccdamostachys Binneyana, Schimp." By Thomas Hick, Esq., 

 B.A., B.Sc. 



4. "Notes on some Pennsylvanian Calamites." By W. S. 

 Gresley, Esq., F.Gr.S. 



5. " Scandinavian Boulders at Cromer." By Herr Victor Madsen, 

 of the Danish Geological Survey. 



During a visit to Cromer in 1891 the author devoted much 

 attention to a search for Scandinavian boulders, and obtained three 

 specimens ; one (a violet felspar-porphyry) was from the shore, and 

 the other two were from the collection of Mr. Savin. The first was 

 considered to come from S.E. Norway, and indeed Mr. K. 0. Bjorlykke, 

 to whom it was submitted, refers it to the environs of Christiania. 



The author considered that the two specimens presented to him 

 by Mr. Savin, who had taken them out of Boulder Clay between 

 Cromer and Overstrand, were from Dalecarlia; and these were 

 submitted to Mr. E. Svedmark, who compared one of them (a brown 

 felspar-hornblende-porphyry) with the GronkKtt porphyry in the 

 parish of Orsa, and declared that the other (a blackish felsite- 

 porphyry) might also be from Dalecarlia. 



January 11th, 1893.— W. H. Hudleston, Esq., M.A., F.R.S., 

 President, in the Chair. 



The following communications were read : — 



1. " Variolite of the Lleyn, and associated Volcanic Rocks." By 

 Catherine A. Raisin, B.Sc. 



The district in which these rocks occur is the south-western part 

 of the Lleyn peninsula, marked on the Geological Survey map as 

 ' metamorphosed Cambrian.' 



Some of the holocrystalline rocks are probably later intrusions. 

 The igneous rocks, which are described in detail in the present paper, 

 belong to the class of rather basic andesites or not very basic basalts ; 

 they show two extreme types, which were probably formed by 



