XXXIV 



THE AUTUMN EXCURSION 



On Tuesday, the 31st of August, a numerous partj'' of ladies 

 and gentlemen — members and friends of this Institution and of 

 the Eoyal Cornwall Polytechnic Society — made an Excursion to 

 Dolcoath Mine and Carn Brea. 



Waiting the arrival of their Falmouth friends, Mr. Henwood, 

 r.R.S., one of the Vice-Presidents of the Eoyal Institution of 

 Cornwall, and other officers and members of its Council, assembled 

 in the Museum, where various examples of its interesting contents, 

 illustrative of our mining and antiquities, were displayed for the 

 gratification of expected visitors. Among these objects were : 



The Gold Lunulge and Bronze Celt found at Harlyn, in 1863, 

 and presented to the Museum by H.E.H. the Prince of Wales. 



Tin Slab from the Island of Billiton. 



An Ancient Block of Tin found in Falmouth Harbour, in 1829. 



Slab of Tin found on the barton of Carnanton. 



An Ingot of Banca Tin. 



Chlorite, and Pebbles cemented by Tin, from Relistian. 



Fluor Spar from Wheal Trelawny, Liskeard. 



Characteristic Examples of Cornish Tin and Co]Dper Ores, and 

 illustrations of Smelting Products. 



Specimens of Tin Stone from Dolcoath, and, from the same 

 mine, Oxide of Tin prepared for smelting, and specimens of 

 Granite. 



Jews' House Tin found near St. Austell ; part of a slab weigh- 

 ing about a cwt., and containing about 90 per cent, of first quality 

 metallic tin. 



Various kinds and qualities of Tin-Ore and of Tin in a market- 

 able state. 



Copper Ores, prepared for smelting, and for crushing; each 

 producing 20 per cent, of metal. 



Specimens illustrating the smelting of copper ores. 



China Stone and Clay, in a marketable state. 



Specimens of Arsenic : White Oxide (as sublimed in flues, 

 and in closed vessels), Orpiment, and Realgar. 



A Bronze Bull, supposed to be Phoenician, found at St. Just 

 Vicarage, in 1832 ; and an enlarged drawing of the same, and a 



