Iloj/al Geological Society of Cornuoall. 155 



that there will be sufficient materials for a fifth volume of Transac- 

 tions: — indeed enough for this purpose has already been laid before 

 the Society, but several of the communications made by Dr. Boase 

 during the last year, have, with permission, been withdrawn and 

 embodied in his recent publication on Primary Geology. 



In conclusion, the Council have the pleasure to state that a larger 

 annual accession of new Members has taken place than for many 

 years past, and that the Funds, notwithstanding extraordinary dis- 

 bursements, are adequate to meet the expenditure of the ensuing 

 year. (By order,) Henry S. Boase, 



October 10th, 1834. Secretary. 



The following papers have been read since the last Report : — 

 Remarks on a rare Granitic Rock found in the Walls of the Old St. 

 Mary's Chapel, Penzance. By Henry S. Boase, M.D., Secretary 

 of the Society. — On some curious Phaenomena of Veins, recently 

 observed in the Survey of the Cornish Mines. By W. J. Henwood, 

 F.G.S., &c., Curator of the Museum. — Notice of a singular Vein 

 in Huel Bosavern, St. Just. By Joseph Carne,Esq., F.R.S., F.G.S., 

 M.R.I. A., &c. Treasurer of the Society. — Additional Observations 

 on the Metalliferous Veins of Cornwall. By W. J. Henwood, 

 F.G.S., &c. — On the Composition and Structure of the Granitic 

 and Schistose Rocks at their Junction. By Henry S. Boase, M.D. — 

 Details of some Experiments on the Horary Vibrations of the Mag- 

 netic Needle in vacuo, with a view to investigate the Question of 

 the Diurnal Variation of Terrestrial Magnetism. By W.J. Henwood, 

 F.G.S. — An Examination of the Cornish Slickensides, showing that 

 they cannot be referred to a Mechanical Origin. By the same. — 

 An Essay on the Nature of Stratification. By Henry S. Boase, 

 M.D. — An Inquiry whether the Veins of Cornwall afford Evidences 

 of Elevation or Subsidence of the Strata. By W. J. Henwood.— 

 On the Fossil Bones of Pentuan Stream-work at present in the Mu- 

 seum. By R. Hocking, Esq., Member of the Society. — Notice of 

 some Electro-magnetic Observations in Huel Jewel Copper Mine. 

 By Robert Were Fox, Esq., Member of the Society. — A Sketch of 

 the Geology of Forfarshire. By Henry S. Boase, M.D. — Remarks 

 on the Theories of Mineral Veins. I3y Mr. Richard Tregaskis, 

 Associate of the Society. — An Account of the Salt Springs and Rock 

 Salt Formation of Hallein in Upper Austria. By John Armstrong, 

 jun., Esq., Member of the Society. — Notice of the Effects of a Flash 

 of Lightning at East Huel Crofty Mine. By W.J. Henwood. — 

 Notice concerning the Nature of the Rocks in the Vicinity of Real 

 del Monte. By Mr. John Rule, Camborne. — Notice of the Blasting 

 of Rocks, with a Description of a new Fuse for igniting the Charge 

 under water. By Mr. J. Hancock. — An Account of the Quantity 

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

 the Midsummer Quarter ISSl*. By Joseph Carne, Esq. — An Ac- 

 count of the Quantity of Copper produced in Cornwall, and in Great 

 Britain and Ireland, in the year ending the 30th of June, 1834. By 

 Alfred Jenkin, Esq. 



At the Anniversary Meeting, held on the 10th of October, 1834, 

 Davies Gilbert, Esq.,D.C.L., F.R.S.,t^'c., Presidcnt/m the chair:— 



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