CONTENTS OF VOL. XXIX. FIFTH SERIES. VU 



Pa s e 



Rev. Frederick J. Smith on a Mercury-still for the Rapid Dis- 

 tillation of Mercury in a Vacuum 501 



Mr. Charles A. Carus-Wilson on the Distribution of Flow in a 

 Strained Elastic Solid 503 



Prof. R. Threlfall on Sensitive Galvanometers 508 



M. F. Osmond's Considerations on Permanent Magnetism . . 511 



Notices respecting New Books : — 



Dr. A. Irving's Chemical and Physical Studies in the 

 Metamorphism of Rocks 514 



The Radiant Energv of the Standard Candle; Mass of Meteors, 

 by C. C. Hutchins 518 



Observations on Atmospheric Electricity in the Tropics, by 

 F. Exner 520 



Index 521 



PLATES. 



I. Illustrative of Prof. Carnelley's Paper on an Approximate Algebraic 

 Expression of the Periodic Law of the Chemical Elements. 



II. Illustrative of H. Nagaoka's Paper on Transient Electric Current 

 produced by suddenly twisting Iron and Nickel Wires. 



III.-V. Illustrative of Mr. C. A. Carus-Wilson's Paper on the Be- 

 haviour of Steel under Mechanical Stress. 



VI. Illustrative of Mr. Fred. T. Trouton's Paper on the Acceleration 

 of Secondary Electromagnetic Waves. 



VII. Illustrative of Mr. Spencer U. Pickering's Paper on a New Form 

 of Mixing-Calorimeter. 



VIII. Illustrative of H. E. J. G. du Bois's Paper on Magnetization in 

 Strong Fields at Different Temperatures. 



IX. Illustrative of Rev. F. J. Smith's Paper on a new Form of Electric 

 Chronograph.' 



X. Illustrative of Mr. J. C. M c Connel's Paper on the Theory of Fog- 

 Bows. 



