1818.] Proceedings of Philosophical Societies. 225 



Besides the papers already noticed (and which contribute in 

 an eminent degree to elucidate the great geological features of 

 the island) are many others veiy interesting, but for which we 

 must refer our readers to the volume itself. Among these may 

 be particularly distinguished, " Observations on the Mountain 

 Cruachan," " Observations on the Hill of Kinnoul," " On the 

 Parallel Roads of Glen Roy." All by Dr.M'Culloch. "Account 

 of some remarkable Disturbances in the Veins of the Mine of 

 Huel Pever, in Cornwall." By J. Williams. " Description of 

 the Tunnel of the Tavistock Canal." By John Taylor. Two 

 crystallographical papers. By W. Phillips. " Description of 

 the Paramoudra." By the Rev. W. Buckland. " On the 

 Gravel of Litchfield." By Arthur Aikin, 



Article XIV. 



Proceedings of Philosophical Societies. 



ROYAL ACADEMY OF SCIENCES AT PARIS. 



May 4. — M. le Marquis Dangeau sent the description of a 

 neW capstan. 



M. Vauquelin, eleve ingenieur des ponts et chaussees, communi- 

 cated some observations on Sir W. Congreve's Canal Lock. 



M. Biot read an extract of a letter from Mr. Pond, Astronomer 

 Royal, relative to some recent experiments on the pendulum 

 made at Greenwich. He also announces in the same letter his 

 persuasion that the double annual parallax of Aquila, Arcturus, 

 and Lyra, does not exceed a quarter of a second. 



M. Berthollet made a report on the seventh memoir of 

 M. Chevreul sur les corps gras. 



M. Arago delivered in a report on the English Expedition to 

 the Congo. 



May 11. — M. Delambre gave an account of the new work of 

 M. Bessel, on the Observations of Bradley. 



M. de Manoury-d'Ectot gave in a description of his new 

 Steam Engines, which was referred to a committee. 



M. Thenard made a report on the memoir of MM. Pelletier 

 and Caventou on Cochineal : the memoir was ordered to b« 

 published among the Scjavans etrangers. 



M. Bosc made a report on the memoir of M. France on th« 

 Genus Cahochon. 



In this memoir M. France proves that the Patella mitrata 

 among recent and the Patella cornea among fossil shells, as 

 well as several others, as yet undescribed, are in fact bivalves, 

 and must, therefore, be referred to a new genus. 



M. Giiiird read a memoir by M. le Gallois, on the Iron Rail- 

 ways of England. 



Vol. XII. N° III. P 



