460 Scientific Notices-^Chemistry, [1)ec. 



An account of the Produce of the Copper Mines of Cornwall, 

 in Ore Copper, and Money, in the Year ending the 30th June, 

 1826. By Mr. Alfred Jenkyns. 



An^ong the presents is the following : — 



A metallic Pan and Cover, about 15 inches in diameter, found 

 at the depth of 12 feet in an old Stream Work, near St Columb. 

 The metal is very good tin nearly equal to grain. This vessel 

 was probably used for culinary purposes, and at a period previous 

 to the introduction in this country of the alloys of tin with 

 copper and with lead. By H. S. Boase, MD. 



At the Anniversary Meeting held on the 13th of Oct. 1826, 

 Davies Gilbert, Esq. MP. VPRS. &c. President, in the Chair; 

 the Report of the Council being read, it was resolved : — 



That it be printed and circulated amongst the Members : 



That the thanks of the Society be presented : 



1. To the Authors of the various Papers. 



2. To the Donors of Minerals, Books, 8cc. 



3. To the Officers of the Society : 



Lastly, — ^That another Volume of Transactions be forthwith 

 pubHshed, and that the new Council be requested to take 

 immediate measures for that purpose. 



The following members were then elected Officers and Coun- 

 cil for the year ensuing : — 



President. —Tidiy'ie^ Gilbert, Esq. MP. Sec. &c. 



Vice-Presidents, — Sir John St. Aubyn, Bart. ; Sir Charles 

 Lemon, Bart. ; William T. Praed, Esq. ; Rev. Uriah Tonkin. 



Secretary, — Henry S. Boase, MD. 



Treasurer, — Henry Boase, Esq. 



Xtftrana/i.— T. F. Barham, MD. 



Curator, — Edward C. Giddy, Esq. 



Assistant Secretary, — Richard Moyle, Esq. 



Council. — George S. Borlase, Esq.; Joseph Carne, Esq.; 

 Stephen Davey, Esq.; Richard Edmonds, Esq.; William M. 

 Tweedy, Esq.; Robert W. Fox, Esq.; George Grenfell, Esq.; 

 Michael Williams, Esq. ; Humphry Grylls, Esq. ; George D. 

 John, Esq. 



Article XIIL 



SCIENTIFIC NOTICES. 



Chemistry. 



1. Method of purifying Crystals, By M. Robinet. 



Every practical chemist knows how difficult it often is, parti- 

 cularly m the analysis of organic substances, to clear away from 

 crystalline products the mother water, and other heterogeneous 

 matters, which collect in their interstices. When the crystals 



