CONTENTS OF VOL. XXXII, 



(FIFTH SERIES). 



NITMBEE CXCIV.— JULY 1891. 



Mr. J. Swinburne on some Points in Electrolysis 1 



Mr. A. Schuster's Electrical Notes 9 



Mr. S. IT. Pickering on the Theory of Dissociation into Ions, 

 and its Consequences 20 



Dr. Gr. Gore on Changes of Yoltaic Energy of Alloys during 

 Eusion , 27 



Mr. W. Sutherland on a Kinetic Theory of Solids, with an 

 Experimental Introduction 31 



Mr. W. C. D. Whetham on Kohlrausch's Theory of Ionic 

 Velocity 43 



Mr. J. McCowan on the Solitary Wave 45 



Mr. S. T. Preston on an Acoustic Thermometer — a Suggestion 58 



Mr. E. A. Lehfeldt on a Modified Eorm of Wheatstone's 

 Bridge 60 



Prof. J. Perry on a Steam-Engine Indicator for High Speeds . 63 



Mr. E. T. Grlazebrook ou the Value of some Mercury Eesist- 

 ance Standards , , 70 



Mr. J. E. Trevor on the Mutual Solubility of Salts in Water . 75 



Mr. S. Skinner on an Apparatus for Measuring the Compres- 

 sibility of Liquids . . . - 79 



Mr. F. T. Trouton on the Influence the Size of the Eeflector 

 exerts in " Hertz's Experiment " 80 



Mr. S. IT. Pickering on Mr. Sydney Lupton's Method of 

 Eeducing the Eesults of Experiments 90 



Mr. E. H. Hayes's Consideration of some of the Objections 

 raised by Mr. Lupton to Mr. Pickering's Methods of 

 reducing Experimental Eesults 99 



Mr. H. L.Callendar on the Construction of Platinum Ther- 

 mometers 104 



Dr. E. Obach on a probable Eelationship between Specific 

 Inductive Capacity and Latent Heat of Vaporization < . . . 113 



Mr. F. J. Smith on an Instrument for Measuring Chronograph 

 Traces \. , 126 



