CONTENTS OF VOL. XXIV. FIFTH SERIES. Vll 



Page 

 Eev. O. Fisher's Eeply to Objections raised by Mr. Charles 



Davison, M.A., to the Argument on the Insufficiency of the 



Theory of the Contraction of a Solid Earth to account for 



the Inequalities of the Surface 391 



Mr. C. Davison's Note on the Belation between the Size of a 



Planet and the Eate of Mountain-building on its Surface . . 394 

 Prof. S. P. Thompson on Twin Prisms for Polarimeters .... 397 



Prof. E. Edlund on the Theory of Unipolar Induction 401 



Mr. J. C. McConnel on the Cause of Iridescence in Clouds . . 422 

 Mr. H. E. Newall on Peculiarities observed in Iron arid Steel 



at a Bright-Eed Heat 435 



Prof. J. Kleiber on " Eandom Scattering " of Points on a 



Surface 439 



Magnetic Circular Polarization in Cobalt and Nickel, by H. 



E. J. G-. Du Bois 445 



On the Solidification of Liquids by Pressure, by E.-H. Amagat 446 

 On a New Voltaic Battery, by E. Eriederichs in Stiitzerbach 448 



NUMBER CLE— DECEMBER. 



Messrs. A. A. Michelson and E. W. Morley on the Eelative 

 Motion of the Earth and the Luminiferous iEther 449 



Messrs. A. A. Michelson and E. W. Morley on a Method of 

 making the Wave-length of Sodium Light the actual and 

 practical Standard of Length 463 



Mr. H. H. Turner on Mr. Edge worth's Method of Eeducing 

 Observations relating to several Quantities 466 



Mr. S. H. Burbury on the Diffusion of Gases. — A simple case 

 of Diffusion 471 



Mr. 0. Heaviside on Eesistance and Conductance Operators, 

 and their Derivatives, Inductance and Permittance, especi- 

 ally in connexion with Electric and Magnetic Energy .... 479 



Sir W. Thomson on the Division of Space with Minimum 

 Partitional Area 503 



Sir W. Thomson on the Application of the Deci-ampere or 

 the Centi-ampere Balance to the Determination of the 

 Electromotive Eorces of Voltaic Cells 514 



Notices respecting New Books : — 



Mr. E. A. Eoberts's Treatise on the Integral Calculus . . 517 



Influence of Magnetism on the Thermoelectric Behaviour of 

 Bismuth, by Dr. O. P. Grimaldi 517 



On the Action of Light on a Mixture of Hydrogen and 

 Chlorine, by E. Pringsheim " 519 



Index 520 



