Wernerian Socieiy. 129 



tions on the elevated Marine Deposits in the Basin of Clyde, ac- 

 companied with remarks by Mr. Deshayes, Mr. Lyell, and Mr. G. 

 R. Sowerby, on the Shells unknown as British imbedded in them ; 

 from which it appeared, that out of twenty species, seven are at pre- 

 sent to be found recent in the Arctic Seas ; five in the Crag and 

 Sicilian newer Pliocene ; and that the rest are peculiar to the de- 

 posit in question. 



Dr. Trail exhibited a specimen of Bergmehl from the North of 

 Sweden, communicated to him by Mr. Laing. The Doctor had sub- 

 mitted it to analysis, and found it to be composed of the minute 

 shields of infusoria, about one thousandth part of an inch in size, 

 consisting chiefly of siliceous earth and alumina. Professor Jameson 

 exhibited a very fine specimen of flexible sandstone from the Hima- 

 laya Mountains, transmitted from India by Dr. Robert Stevenson. 



February 9. — John Sligo, Esq., in the Chair. 



A paper by Dr. Chas. R. Goring was read, on the Comparative 

 Merits of the Reflecting Microscope of Sir D. Brewster, and the 

 Catadioptric Engiscope of Prof. Amici of Modena, with an account 

 of a new Reflecting Telescope for Terrestrial Objects. On this paper 

 we will not dilate, as not bearing directly on the subject of our work. 

 Dr. Goring is of the opinion, that however admirable Sir David's 

 microscope may be in theory, it will not answer in practice. 



A communication was then read, on the Geology of Greece and 

 the Greek Islands, illustrated with numerous specimens. 



Professor Wallace then explained by a model and diagram his so- 

 lution of the Miner's Problem, in reference to the depths of different 

 strata, &c. 



February 23. — Dr. Thomas Stewart Traill in the Chair. 



Mr. Edward Forbes laid before the meeting a communication on 

 the Asteriadce of the Irish Sea, illustrated by the exhibition of spe- 

 cimens. In his arrangement he chiefly followed the one recently pro- 

 posed by Professor Agassiz, occasionally modifying it, and introdu- 

 cing a few new genera and species. As this valuable and original 

 paper will appear in the forthcoming number of the Society's Trans- 

 actions, we need not enter further into particulars*. Professor Jame- 

 son then exhibited a fine specimen of the Beaumaris Shark, taken off 

 the coast of Aberdeenshire. The characters which distinguish it 

 from the Porbeagle Shark were dwelt upon. 



* We trust that arrangements have been made for the more regular pub- 

 lication of its excellent memoirs; vol. vi. was published in 1832; vol. vii., 

 containing two Prize Essays and an Appendix, appeared in 1838. — Ed. 



