CONTENTS. V 



Page 



Proceedings of the Astronomical Society. ..*."../»... •• 230 



Solar Spectrum — Light and Heat 234 



Luminous Circle around the Moon 236 



Geckoes used for catching Flies 237 



On the Serpents of Southern Africa - 237 



Manner of the Serpent-Eater (Gypogeranus) in destroying Serpents 237 



New Species of a North American Quadruped 233 



New Scientific Books 239 



New Patents 230 



Mr. Giddy's Meteorological Journal 240 



NUMBER IV.— OCTOBER. 



Biographical Notice of Joseph-Louis Proust, Member of the Institute, 

 of the Legion of Honour, of the Royal Academy of Medicine, and Pro- 

 fessor of Pharmacy 241 



Messrs. Babbage and Herschel's Account of the Repetition of M. Arago's 

 Experiments on the Magnetism manifested by various Substances during 



the Act of Rotation {concluded) , 246 



Mr. Christie on the Magnetism developed in Copper and other Substances 



during Rotation 253 



Mr. Graham on the Heat of Friction , ^Qq 



Dr. Colquhoun's Chemical Essay on the Art of Baking Bread {concluded) 263 



Mr. Goldingham on the Pendulum at the Equator 281 



Sir James Hall on the Consolidation of the Strata of the Earth 299 



Muride, a supposed new elementary Substance 311 



Spontaneous Combustion of Chlorine and Olefiant Gas 312 



Thenardite 312 



Remarks on Bowlders 314 



New Species of Salamander, inhabiting Pennsylvania 315 



On the Semi-decussation of the Optic Nerves 3 15 



New Scientific Books 315 



New Patents 317 



Mr. Giddy's Meteorological Journal 3 1 g 



Mr. Howard's Meteorological Journal 3jq 



NUMBER v.— NOV^EMBER. 



Biographical Account of Alexander Wilson, MD. late Professor of Prac- 

 tical Astronomy in Glasgow 321 



Mr.Scanlan on the incidental Formation of the Compound of Hyponitrous 

 and Sulphuric Acids, lately examined by Dr. Henry. ..,.,., 334 



