' CONTENTS. 



I. Account of GuernseT/, and the other Channel Islands. By 

 J, Mac Culloch, M.D. F.L.S. Member of the Geological Societi), p. 1 



II. A Description of the Red Oxijd of Copper, the production of Corn- 

 wall, and of the varieties in the form of its Crystal, with observations on 

 the Lodes which principally produced it ; and on the. Crystallization of 

 the Arseniated Iron. By William Phillips, Esq. Member of the Geolo- 

 gical Society. p. 23 



III. A Sketch of the natural History of the Cheshire Bock-Salt District. 

 By Henry Holland, Esq. Honorary Member of the Geological 

 Society. p. 38 



IV. Account of the Pitch Lake of the Island of Trinidad. By Nicholas 

 Nug'ent, M.D. Honorary Member of the Geological Society. p. 63 



V. Memoir on the Laumonite. By M. le Comte de Bournon, Foreign 

 Secretary of the Geological Society. p. 77 



VI. Observations on the Physical Structure of Devonshire and Connvall. . 

 By J. F. Berger, M.D. Honorary Member of the Geological Society. 



p. 93 



VII. Jn Account of " The Sulphur" or " Souffriere" of the Island of 

 Muntserrat. By Nicholas Nugent, M.D. Honorary Member of the 

 Geological Society. p. 185 



VIII. Observations on the Wrekin, and on the great Coal-Ficld of Shrop- 

 shire. By Arthur Aikin, Esq. Member of the Geological Society, p. 191 



IX. A Chemical Account of an Aluminous Chalyheate Spring in the Isle 

 of Wight. By Alexander Marcet, M.D. F.R.^t one of the Physicians 

 to Guy's Hospital, and Member of the Geological Society. p. 2 J 3 



