462 Royal Geological Society of Cornwall. 



Trigg, Lesnewth, Stratton, and Powder, and penetrated some di- 

 stance into the hundreds of east and west. He has presented the 

 Society with a memoir, containing the results of these researches, 

 accompanied by a beautiful section of the different districts, and a 

 series of illustrative specimens. This valuable contribution will not 

 only form a very prominent feature in the Geology of Cornwall, but 

 if followed up, would soon accomplish the map, which has been so 

 long in contemplation. 



The Council also beg to refer the Meeting to a series of specimens 

 from the Garth Mine, in illustration of Mr. Carne's paper upon Di- 

 luvial Tin, and presented by him to the Society. (By Order) 



October 6th, 1830. E. C. Giddy, Secretary. 



The following is a list of the papers which have been read since 

 the last meeting : — 



On the very singular deposit of Alluvial Matter on St. Agnes Bea- 

 con, and the Granitic Rock which occurs in the same situation. By 

 John Hawkins, Esq. F.R.S. &c. Member of the Society. — A Descrip- 

 tion of the Stream Work at Drift Moor, near Penzance. By Joseph 

 Came, Esq. F.R.S. F.G.S. M.R.I.A. &c. Treasurer of the Society.— 

 Some Account of the Soft Growan at Beam Mine, in the parish of 

 Roche ; and at Carclaze Mine, in the parish of St. Austle. By John 

 Hawkins, Esq. — Some Observations on Metalliferous Veins, and 

 their Electro-magnetic Properties. By Robert Were Fox, Esq. Mem- 

 ber of the Society. — Remarks on Alpine Phenomena. By the Rev. 

 S. J. Trist. — On Diluvial Tin, with a notice of the discovery of some 

 varieties of the Oxide of Tin in a vein, which have been generally 

 supposed to be peculiar to Stream Works. By Joseph Carne, Esq. 

 — Contributions towards a Knowledge of the Geology of Cornwall. 

 By Henry S. Boase, M.D. Member of the Society. — Observations on 

 some of the Mineral Veins of Cornwall ; and on some of the Metal- 

 liferous Deposits of Devon. By Mr. W. J. Henwood, F.G.S. Mem- 

 ber of the Society. — On the State of our Tin Mines, at different pe- 

 riods, until the commencement of the eighteenth century. By John 

 Hawkins, Esq. — An Account of the Quantity of Tin produced in 

 Cornwall and Devon, in the year ending with Midsummer Quarter, 

 1830. By Joseph Carne, Esq. — An Account of the Quantity of 

 Copper produced in Cornwall, and in Great Britain and Ireland, in 

 the year ending the 30th June, 1830. By Mr. Alfred Jenkin. 



DONATIONS TO THE CABINET AND LIBRARY. 



Specimens from Brazil, consisting of Topaz, Amethyst, Semi-Opal, 

 Rock Crystal, Gold imbedded in micaceous Iron, &c. By Lieutenant 

 General Tench. — Native and grey Copper, Nodules containing Quartz 

 Crystals, &c. By Joseph Carne, Esq. — Carbonate of Manganese, 

 and Varvicite, a New Oxide of Manganese *. By Alfred Fox, Esq. 

 — Specimens of Silver Glance from Mexico. By Mr. John Adams. 

 • — Specimen of Slate traversed by a vein of Yellow Sulphuret of 

 Copper. By Mr. James Mitchell. — Additional Specimens of Organic 

 remains from the neighbourhood of Torquay. By the Rev. J. M c Enery. 



* See Phil. Mag. and Annals, N. S. vol. v. p. 209, 254 ; vol. vi. p. 281. 



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