VI CONTENTS OF VOL. XXXIV. FIFTH SERIES. 



NUMBER COIX.— OCTOBER. 



Page 

 Lord Rayleigh on the Intensity of Light reflected from Water 

 and Mercury at nearly Perpendicular Incidence. (Plate X.) 309 



Prof. Ewing on Joints in Magnetic Circuits 320 



Profs. J. .Dewar and J. A. Fleming on the Electrical Resistance 

 of Pure Metals, Alloys, and Non-metals at the Boiling- 

 point of Oxygen 326 



Rev. O. Fisher on Theories to account for Glacial Submergence 337 

 Prof. E. B. Rosa on the Specific Inductive Capacity of Elec- 

 trolytes. (Plate IX.) 344 



Mr. R. H. M. Bosanquet on the Calculation of the Illumi- 

 nating-Power of Hydrocarbons and their Mixtures. — Part 



II. Diluents, and general second approximation 355 



Prof. G. D. Liveing on Pliicker's supposed Detection of the 



Line-spectrum of Hydrogen in the Oxyhydrogen Flame . . 371 

 Mr. C. Barus on the Thermoelectrics of Platinum- iridium and 



of Platinum-rhodium 376 



Notices respecting New Books : — 



J. Violle's Cours de Physique 381 



Proceedings of the G-eological Society : — 



Mr. J. Postlethwaite on the Dioritic Picrite of White 



Hause and Great Cockup 383 



Maria M. Ogilvie's Contributions to the Geology of the 



Wengen and St. Cassian Strata in Southern Tyrol . . 383 

 Mr. J. Crawford's Notes from a Geological Survey in 



Nicaragua 384 



Mr. B. Hobson on the Basalts and Andesites of Devon- 

 shire, known as Felspathic Traps 385 



Mr. T. Tate on Recent Borings for Salt and Coal in the 



Tees Salt-District 385 



Treatise on Optical Physics, by A. B. Basset 386 



On the Determination of the Dielectric Constant of Conducting 

 Liquids, by W. Stschegtiaeff 388 



NUMBER CCX.— NOVEMBER. 



Dr. W. L. Robb on Oscillations that occur in the Charging of 

 a Condenser 389 



Lord Rayleigh on the Interference Bands of Approximately 

 Homogeneous Light ; in a Letter to Prof. A. Michelson . . 407 



Mr. F. G. Donnan on an Attempt to give a simple Theoretical 

 Explanation of Raoult's Law of the Lowering of Vapour- 

 Pressure 411 



Dr. G. J. Stoney on the Appreciation of Ultra-visible Quan- 

 tities, and on a Gauge to help us to appreciate them 415 



