Xll 



Of the Functions of some parts of the Brain ; and of the relations 

 between the Brain and Nerves of Motion and Sensation. By Sir 



On the Principle of Construction and General Application of the Ne- 

 gative Achromatic Lens to Telescopes and Eyepieces of every de- 

 scription. By Peter Barlow, Esq. F.R.S 284 



Some remarks in reply to Dr. Daubeny's Note on the Air disengaged 

 from the Sea over the site of the recent Volcano in the Mediter- 

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

 Hospitals 284 



On the number of Primitive Colorific Rays into which White Light 

 may be separated. By Paul Cooper, Esq 284 



An Investigation of the Laws which govern the Motion of Steam- 

 Vessels, deduced from experiment. By P. W. Barlow, Esq. Civil 

 Engineer 285 



On the Equilibrium of a Mass of Homogeneous Fluid at liberty. By 

 James Ivory, Esq., K.H. M.A. F.R.S 286 



Experimental Researches in Electricity ; Eighth Series. By Michael 

 Faraday, Esq. D.C.L. F.R.S 287 



On the Arcs of certain Parabolic Curves. By Henry Fox Talbot, Esq. 

 M.P. F.R.S 287 



Observations on the Teredo navalis and Limnoria terebrans, as at pre- 

 sent existing in certain localities of the British Islands. By Wil- 

 liam Thompson, Esq. Vice-President of the Natural History So- 

 ciety of Belfast .*. 291 



On the Nervous System of the Sphinx ligustri (Linn.) during the latter 

 stages of its Pupa and its Imago States ; and on the Means by 

 which its Development is effected. By George Newport, Esq 292 



Observations on the Torpedo, with an account of some additional ex- 

 periments on its Electricity. By John Davy, M.D. F.R.S. Assist- 

 ant Inspector of Army Hospitals 293 



Appendix to a former Paper on Human Osteology. By Walter Adam, 

 M.D 294 



On the Repulsive Power of Heat. By the Rev. Baden Powell, M.A. 

 F.R.S. Savilian Professor of Geometry in the University of Oxford. 294 



Analysis of the Moira Brine Spring near Ash by- de-la-Zouch, Leices- 

 tershire, with Researches on the Extraction of Bromine. By 

 Andrew Ure, M.D. F.R.S 295 



On the Nature and Origin of the Aurora Borealis. By the Rev. 

 George Fisher, M.A. F.R.S 295 



Theorie Balistique. Par M. Le Comte de Predaval 296 



On the Atmospheric Tides and Meteorology of Dukhun, in the East 

 Indies. By Lieut.-Colonel W. H. Sykes, F.R.S 296 



On the Ova of the Ornithorhynclius paradoxus. By Richard Owen, 



Esq 297 



Observations with the Horizontal and Dipping Needles, made during a 

 Voyage from England to New South Wales. By James Dunlop, Esq. 297 



Experiments on Light. By Henry Fox Talbot, Esq., M.P. F.R.S... 298 



On the Mummy Cloth of Egypt ; with Observations on the Manufac- 

 tures of the Ancients. By James Thomson, Esq. F.R.S..., 298 



