CONTENTS OF VOL. XXXII. FIFTH SERTES. Vll 



Page 



Mr. C. Touilinson's Remarks suggested by a popular Article 

 on the Ignis Eatuus , 464 



Sir W. Thomson on a Theorem in Plane Kinetic Trigonometry 

 suggested by Gauss's Theorem of Curvatura Integra .... 471 



Messrs. J. A. Wanklyn, W. Johnstone, and W. J. Cooper on 

 the Nature of Solution 473 



Notices respecting New Books : — 



Dr. P. Molenbroek's Theorie der Quaternionen 477 



Chemical Action at a Distance, by S. U. Pickering 478 



Measurement of the Chemical Intensity of the Solar [Radia- 

 tion, by A. Bartoli 480 



On Wheatstone's Determination of the Velocity of Electricity, 

 by Prof. J. Stefan 480 



NUMBER CXCIX.— DECEMBER. 



Prof. C. A. Carus Wilson on the Influence of Surface-Loading 



on the Elexure of Beams. (Plate II.) 481 



Mr. J. Trowbridge on the Damping of Electrical Oscillations 



on Iron Wires 504 



Table of Zonal Spherical Harmonics, calculated by Messrs. C. 



E. Holland, P. R. Jones, and C. Gr. Lamb. With a short 



Explanation and some Illustrations of its use by Prof. J. 



Perry (Plate I.) 512 



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



Experimental Introduction 524 



Mr. J. McCowan's Note supplementary to a Paper on the 



Solitary Wave 553 



Sir "W. Thomson on Instability of Periodic Motion, being a 



continuation of Article on Periodic Motion of a finite 



Conservative System , 555 



Notices respecting New Books : — 



Dr. H. Whiting's Course of Experiments in Physical 

 Measurement. — Part IV. Appendix for the Use of 



Teachers 561 



Molecular Theory of Diffusion and Electrolysis, by E. Riecke. 562 

 Method of Determining the Surface-Ten si on of Mercury, by 



H. Sentis 564 



Allotropic Silver, by M. C. Lea 564 



Index 565 



