CONTENTS OF N° 235.— Fourth Series. 



XI. On certain Thermomolecular Relations of Liquids and their Sa- 

 turated Vapours. By John James Waterston, Esq. (With Four 

 Plates.) #. page 81 



XII. Investigation of the Electric Light. By Professor E. Edlund 103 



XIII. On the Integration of the General Linear Partial Differential 

 Equation of the Second Order. By R. Moon, M.A., Honorary Fel- 

 low of Queen's College, Cambridge 1 118 



XIV. Observations on the Humming Sound produced on Mountains 



by Electricity. By M. Henri de Saussure 123 



XV. On the Dynamical Theory of Gases. By J. Clerk Maxwell, 

 F.R.S.L.&E v . 129 



XVI. On Silvering Glass. By Justus von Liebig , 146 



XVII. Proceedings of Learned Societies : — 



Royal Society : — Mr. R. Warington on some Alterations in 

 the Composition of Carbonate-of-Lime Waters, depending on 

 the influence of Vegetation, Animal Life, and Season . . 147-153 



Geological Society : — Mr.W.W. Stoddart on the Lower Lias 

 of Bristol ; Mr. C. O. Groom-Napier on the Lower Lias Beds 

 occurring at Cotham, Bedminster, and Keynsham, near Bristol ; 

 Mt.W.B.Dawkins on theDentition of Rhinoceros Etruscus. 153-155 



XVIII. Intelligence and Miscellaneous Articles : — 



On Stellar Spectra, by Father Secchi 155 



On an Improved Method of dividing Alcohol and other Ther- 

 mometers, by William Ackland, Esq 156 



On the Dialysis of Induced Currents, by M. E. Bouchotte 158 



Method of Galvanically producing Hollows and Relief without 

 the aid of Varnish, by M. Balsamo 159 



*** It is requested that all Communications for this Work may be addressed, 



5ost-paid, to the Care of Messrs. Taylor and Francis, Printing Office, Red 

 'ion Court, Fleet Street, London. 



