SCIENTIFIC SOCIKTY OF LONDON. 



219 



SCIENTIFIC SOCIETY OF LONDON. 



Wednesday. May I8ih, 1842. — George Alexander, Esq. 

 F.S.A. in the chair. Communications were read on the fol- 

 lowing subjects. 



1 . On the deposit of sand at Dersingham, in Western Nor- 

 folk, whence the most approved silex for the flint glass manu- 

 facture is obtained, — By Mr. J. E. Moxon. 



This notice embraced descriptions of the various layers of 

 sand, their respective thicknesses, siliceous constituents, and 

 the general geological features of the neighbourhood. 



2. On vertical flint bands in Chalk. — By Mr. F. Collier. 

 These bands occur in the chalk on the line of the Thames 



and Medway Canal ; they generally range from thirty to fifty 

 feet in length, and are composed, not of separate flint 

 nodules, but of thin bands, generally continuous for several 

 feet, and rarely exceeding an inch in thickness ; they inter- 

 sect the horizontal layers of flint nodules at right angles, 

 without giving rise to any displacement. 



3. On two ores of argentiferous galena^ from Mount Barker 

 district, South Australia.— 'By Mr. H. B. Denton. 



These specimens are samples of the first lead ore met with 

 in Southern Australia. At the request of Mr. Croft, these 

 ores were referred to that gentleman for analysis. 



Wednesday, June 1st, 1842. — The annual general meeting 

 was held this evening, George Alexander, Esq. F.S.A. in 

 the chair. The minutes of the former annual general 

 meeting, and of a subsequent special general meeting, 

 having been read and confirmed, and the report of the 

 Council, showing the increasing prosperity of the society, 

 having been adopted, the election of council and officers for 

 the ensuing year took place, the following proving the re- 

 sult : — President, John Stevens ; Fice- Presidents, George 

 Alexander, F.S.A., J. Bailey Denton, M. Just, C.E 5 Council, 



