CONTENTS. 



Page 

 Art. I. Biographical Memoir of Henry Cavendish, Esq. 



F. R. S. &c. By Baron Cuvier, - - 209 



II. Essay on the Structure and Action of Volcanoes in 

 different Regions of the Earth. By Baron Hum- 

 boldt, ----- 222 



III. On the Aurora Borealis. By John Richardson, M.D. 

 F.R.S. F.L.S. M.W.S. Surgeon and Naturalist to 

 the Arctic Land Expedition, - - 241 



IV. A Sketch of the Climate of the Mediterranean, with 

 Remarks on its Medical Topography; being the 

 result of Five Years' Observations. By the late 

 William Black, Esq. Surgeon, Royal Navy ; and 

 communicated by Dr Black of Bolton in Lanca- 

 shire, ----- 243 

 V. Observations on the Arborizations in Dendritic Cal- 



cedony, or Mocha Stone, _ - - 268 



VI. On the occurrence of Fossil Remains of Mammalia in 



the Coal Formation of the Canton of Zurich, 273 



VII. Account of the Slip and Breaking up of a vast Mass 

 of Strata, on the Banks of the Whitadder in Ber- 

 wickshire. In a Letter from David Milne, Esq. 

 A. M. &c. to Professor Jameson, - - 275 



VIII. Examination of the Experiments hitherto published 

 on Subterranean Temperature, together with Expe- 

 riments and Inquiries relative to this Examination. 

 By M. L. CoRDiER, Member of the Royal Academy 

 of Sciences, and Professor of Geology in the Gar- 

 den of Plants, - - - - 277 



IX. Sketches of the Meteorology, Geology, Agriculture, 

 Botany, and Zoology, of the Southern Mahratta 

 Country. With a Map. By Alexander Turnbull 

 Christie, M. D. Communicated by the Author, 292 



