Geological Society. 141 



Trecisioei.i. 

 William Haseldine Pepys, Esq. F.R.S. 

 Samuel Solly, Esq. 



Secretaries. 

 Leonard Horner, Esq. 

 Arihur Aikin, Esq. 



Foreign Secretary. 

 James Lewis, Count de Bournon, F.R. and L.S. 



COUNCIL. 



The Council consists of the Officers of the Society, and of 



twelve other Ordinary Members. 



The Ordinary Members for the present year are 



Alexander Apsley, Esq. 

 The Hon. Hcnrv Grey Ben- 



nct, M.P. 

 The Rev. E. J. Burrow. 



James Franck, M.D. 

 James Laird, M.D. 

 Alexander Marcet, M.D. 

 F.R.S. 



John George Children, Esq. j William Phillips, Esq. 



F.R. and L.S. Henrv Warburton, Esq. 



Samuel Davis, Esq. F.R.S. j F.R.S. 

 Sir Henry Enolefield, Bart. ' Samuel Woods, Esq. 



F.R. and L.S. I 



Feb. 21st, 1812. An extract of a letter from Mr. J. R. 

 Jones of Holywell to the President was read, giving au 

 account of a specimen, presented by him to the Society, of 

 supposed native lead, found in a b'jd of gravel in the 

 neighbourhood of Holywell. 



An extract of a letter communicated by the Hon. Henry 

 Grey Bennet, member of the Geo!. Society, was read, de- 

 scribing a submarine volcano wliich made its appearance 

 on Feb. 1st, 1811, off the Island of St. Michael's in the 

 Azores. 



The reading of a paper by W. Phillips, Esq. member of 

 the Geol. Society, cnlllied '' A description of the oxide of 

 tin the production of Cornwall; of the primitive crvstal 

 and its modifications, including an atlen)pt to ascertain 

 with precision the admeasurements of its angles mechani- 

 cally, by means of the reflecting goniometer of Dr. Wol- 

 Jaston : to which is added, a series of il5 crystalline forms 

 and varieties," was commenced. 



The native oxide of tin appears to have been found in 

 almost every district of Cornwall, and in the opinion of 

 Mr. Phillips is by no means peculiar to the primitive rocks 

 of that country. Particular crystalline modifications of 

 this Rul)slancc characterize particular veins. 



Alluvial depositions of tin of considerable extent and 

 depth have been found in several parts of Cornwall, which 



appears 



