Royal Geological Society of Cornxmll. i^y 



ROYAL GEOLOGICAL SOCIETY OF CORNWALL. 

 Sixteenth Annual Report of the Council. 



In presenting the Sixteenth Annual Report, the Council cannot 

 but congratulate the Society on its increasing interest and iinprove- 

 iTient: they have great satisfaction in stating, that since the last 

 anniversary meeting, a considerable addition has been made to the 

 Museum, by the erection of a new Cabinet, and that the metallic 

 and earthy minerals are now completely arranged. 



The Cabinet, which v/as removed from the Museum, has been 

 placed in the apartment lately occupied by the Penzance Library, 

 and a portion of it already appropriated to Cornish geology, con- 

 sisting of rock specimens illustrative of the geology of several dis- 

 tricts of the county. 



The Council have much pleasure in informing the Society, that 

 several sections of the map of Cornwall, presented last year by 

 George S. Borlase, esq. have been transmitted to the following gen- 

 tlemen, who have kindly undertaken to lay down the geology, &c. 

 of the different districts to which they refer : W. M. Tweedy, Esq. ; 

 Mr. Henwood ; Mr. Petherick, Lanescot Mine ; G. B. Kingdon, 

 Esq. of Stratton ; and Mr. Mitchell, of Breage. Any other gentle- 

 men who are inclined to assist in this most interesting labour, may 

 be supplied with sections of other districts of the county by apply- 

 ing to the secretary, who will also furnish them with the instructions 

 sent with the sections already circulated, that a uniform plan may be 

 observed. 



Some further communications on the Stream Works of Cornwall 

 have been received this year; but as it is highly desirable that all 

 possible information should be obtained on a subject of such impor- 

 tance, both in a philosophical and geological point of view, the 

 Council again take the liberty of impressing it strongly on the at- 

 tention of those members who reside in the neighbourhood of these 

 deposits. 



The donations of minerals this year have not been so numerous 

 as on many former occasions ; but those which have been received 

 are interesting, and a considerable acquisition to the Cabinet ; par- 

 ticularly a series of specimens from the silver lode in Dolcoath mine, 

 presented by Captain Petherick; a specimen of gold imbedded in 

 micaceous iron stone, from Co9aes mine, Brazil, by G. C. P'ox, Esq. ; 

 and several specimens of Elba iron, by Mr. Thomas Morgan. In 

 addition to the above minerals, a very interesting series of organic 

 remains, both animal and vegetable, with Wood-tin, &c. from 

 Happy Union Stream Work, at Pentuan, near St. Austle, has been 

 presented by Mr. John W. Coienso; in illustration of a paper which 

 will be read before the Society at this meeting. 



The Council have to lament the absence of one of the greatest or. 

 naments and most efficient nieiiibersof the Society, who is prevented 

 from attending the meeting by extreme ilhicss; but tliey sincerely 

 hope that he will ero long be again enabled to fill the high situation 

 he has held in the Society from its establishment. Every person pre- 

 sent must anticipate the individual alluded to, and regret his ab- 

 sence • 



