VI CONTENTS OF VOL. XXII. FIFTH SERIES. 



Page 



Mr. T. Gray on a new Standard Sine-Galvanometer 368 



Mr. E. T. Edgeworth's Problems in Probabilities 371 



On the Measurement of very High Pressures, and the Com- 

 pressibility of Liquids, by M. P. Amagat 384 



On the Specific Induction Constants of Magnets in Magnetic 



Fields of Different Strengths, by Hilmar Sack 386 



On the Electrical Conductivity of Gases and Yapours, by M. 



Jean Luvini . . .7 387 



An Electrical Experiment, by M. Busch 388 



NTTMBEE CXXXVIIL— NOVEMBEE. 



Mr. T. Gray on the Electrolysis of Silver and of Copper, and 

 the Application of Electrolysis to the Standardizing of Elec- 

 tric Current- and Potential Meters. (Plate VII.) 389 



Mr. H. Tomlinson on certain Sources of Error in Connection 

 with Experiments on Torsional Vibrations 414 



Mr. O. Heaviside on the Self-induction of Wires, — Part IV. 419 



Mr. H. Tomlinson on the Effect of Stress and Strain on the 

 Electrical Eesistance of Carbon 442 



Sir William Thomson on Stationary Waves in Plowing Water. 

 —Part II 445 



Mr. A. Lodge's New Geometrical Eepresentation of Moments 

 and Products of Inertia in a Plane Section ; and also of the 

 Eelations between Stresses and Strains in two Dimensions 453 



Prof. M. A. Cornu on the Distinction between Spectral Lines 

 of Solar and Terrestrial Origin. (Plate VIIL). 458 



Notices respecting New Books : — 



Mr. J. Milne's Volcanoes of Japan 463 



Dr. J. Croll's Discussions on Climate and Cosmology . . 464 



On the Magnetic Eotation of Mixtures of Water with some 

 of the Acids of the Patty Series, with Alcohol, and with 

 Sulphuric Acid, and Observations on Water of Crystalliza- 

 tion, by W. H. Perkin, Ph.D., E.E.S 467 



NUMBEE CXXXIX.— DECEMBEE. 



Lord Eayleigh's Notes on Electricity and Magnetism. — II. 



The Self-induction and Eesistance of Compound Conductors 469 

 Mr. E. H. M. Bosanquet on Permanent Magnets. — III. On 



Magnetic Decay 500 



Dr. W. W. J. Nicol on the Vapour-pressures of Water from 



Salt-Solutions 502 



