ix 



Notice of the Remains of the recent Volcano in the Mediterranean. 

 By John Davy, M.D. F.R.S. Assistant Inspector of Army Hospi- 

 tals page 184 



On Improvements in the Instruments and Methods employed in de- 

 termining the Direction and Intensity of Terrestrial Magnetism. By 

 Samuel Hunter Christie, Esq. M. A." F.R.S 184 



An account of an extraordinary luminous appearance in the Heavens, 

 seen at Athboy in Ireland, on the 21st of March, 1833. By the 

 Right Honourable the Earl of Darnley 186 



On the Magnetic Power of Soft Iron. By Mr. Francis Watkins ... 187 



Essay towards a first approximation to a Map of Cotidal Lines. By 

 the Rev. William Whewell, M.A. F.R.S. Fellow of Trinity College, 

 Cambridge 188 



Report on Professor Faraday's Paper, entitled, Experimental Re- 

 searches in Electricity. Third Series 191 



On the Anatomical and Optical Structure of the Crystalline Lenses of 

 Animals, particularly that of the Cod. By Sir David Brewster, K.H. 

 LL.D. F.R.S. V.P.R.S. Ed '. 194 



On the present Situation of the Magnetic Lines of Equal Variation, 

 and their Changes on the Terrestrial Surface. By Peter Barlow, 

 Esq. F.R.S 195 



Note on a Paper by Dr. John Davy, entitled, Notice on the Remains 

 of the recent Volcano in the Mediterranean. By Charles Daubeny, 

 M.D. F.R.S. Professor of Chemistry in the University of Oxford... 196 



Experimental Researches on Atomic Weights. By Edward Turner, 

 M.D. F.R.S. Lond. and Edinb. Professor of Chemistry in the 

 University of London c 196 



Observations of the Comet of Encke, made in June 1832. By Thomas 

 Henderson, Esq. His Majesty's Astronomer at the Cape of Good 

 Hope 197 



On the supposed Powers of Suction of the Common Leech. By 

 Thomas Andrew Knight, Esq. F.R.S. President of the Horticultu- 

 ral Society 198 



Experimental Researches in Electricity. — Fourth Series. By Mi- 

 chael Faraday, Esq. D.C.L. F.R.S. I'ullerian Professor of Che- 

 mistry in the R,oyal Institution of Great Britain 198 



An Account of a Second Series of Experiments on the Resistance of 

 Fluids to Bodies passing through them. By James Walker, Esq. 

 F.R.S. Civil Engineer 199 



Researches on the Arseniates, Phosphates, and Modifications of Phos- 

 phoric Acid. By Thomas Graham, Esq. M.A. F.R.S. E. Lec- 

 turer on Chemistry in the Andersonian Institution of Glasgow ... 200 



Some Observations on the Structure of Shells, and on the Economy of 

 Molluscous Animals. By John Edward Gray, Esq. F.R.S 201 



Observations on the Physiology of the Nerves of Sensation, illustrated 

 by a case of Paralysis of the Fifth Pair. By John Bishop, Esq. ... 205 



On the Respiratory Organs of the Common Leech (Hirudo officinalis, 

 Linn.), and their connections with the Circulatory System. By 

 George Newport, Esq 206 



On the Comparative Osteological Forms in the Adult European Male 



