480 Royal Geological Society of Cornwall. 



and on the Temperature of the Cornish Mines ; * by Robert Were 

 Fox., Esq., Vice- President of the Society. An account of the Quan- 

 tity of Tin produced in Cornwall and Devon, in the year ending with 

 the Midsummer Quarter, 1837 ; by Joseph Came, Esq.,F.R.S., &c, 

 Treasurer. An account of the quantity of Copper produced in Great 

 Britain and Ireland, in the year ending the 30th June, 1837 ; by 

 Alfred Jenkin, Esq. 



The following gentlemen have been elected in the present year: — 



Ordinary Members. — Captain Rowland, Penzance; Capt. Davies, 

 Penzance; R. E. A. Townsend, Esq., of London; Major Robyns; 

 Richard Thomas, Esq., of Penzance; Dr. Willin, of Penzance; Lewis 

 Stephens, Esq., of Tregenua Castle ; and Nicholas Phillips, Esq., of 

 Penzance. 



Honorary Members. — Henry S. Boase, M.D., F.R.S., F.G.S., &c; 

 L. Cordier, of Paris, member of the Academy of Sciences ; W. H. 

 Fitton, M.D., F.R.S., F.G.S.; and R. J. Griffith, Esq., F.G.S., Pres. 

 Geo. Soc. of Dublin. 



Corresponding Members. — Capt. Proby T. Cautley, F.G.S., of the 

 Bengal Artillery ; E. W. Brayley, Jun., Esq., F.L.S., F.G.S., Libra- 

 rian to the London Institution ; Edward Moore, M.D., F.L.S., Se- 

 cretary of the Plymouth Institution; Henry M'Lauchlan, Esq., 

 F.G.S. ; and Lieut. G. B. Tremenheere, Bengal Engineers. 



Associates. — C. W. Peach, Esq., of Gorran; Samuel Martyn, Esq., 

 of Lower St. Columb; Captains Absalom Francis, of Halkin, Flint; 

 Thomas Richards, of Huel Vor; and Thomas Treweeke, of Halse- 

 town. 



Officers of Council for the ensuing year. 



President.— Davies Gilbert, Esq., D.C.L., F.R.S., F.G.S. Vice- 

 Presidents. — Wm. Bolliho, Esq.; Mich. Williams, Esq.; Right Hon. 

 Sir R. Hussey Vivian, Bart., G.C.B., M.P., &c; and W.Tyringham 

 Praed, Esq. Secretary. — (pro tempore) and Curator. — W. J. Hen- 

 wood, F.G.S. Treasurer.— Joseph Came, Esq., F.R.S., F.G.S. &c. 

 Librarian. — Richard Hocking, Esq. Council. — B. P. Baker, Esq.; 



D. B. Bedford, Esq.; Richard Davey, Esq., F.G.S. ; J.S. Enys, Esq.; 

 R. Were Fox, Esq.; Day Perry le Grice, Esq.; Richard Harvey, Esq.; 

 John B. Pentreath, Esq. ; C. W. Popham, Esq.; Rev. John Punnett ; 



E. Hearle Rodd, Esq.; and Rev. Canon Rogers. 



* A brief but animated discussion between the author and Mr.Henwood 

 followed the reading of this paper: the former insisting that water was the 

 medium of transporting heat in the earth; the latter inquiring why, then, 

 the lower and less permeable rock (granite) was at the same depth colder 

 than slate, and why the water occurring in the slate, if coming from below, 

 was not seen in the granite through which it must inevitably pass in its way 

 upward ? 



