CONTENTS OF VOL. VI. SIXTH SERIES. VU 



NUMBER XXXVL— DECEMBER. 



Page 



Prof. J. P. Kiieneii on the Mutual Solubility of Liquids. — 11. 637 

 Dr. C. J. Joly on a Method of establishing the Principles 



of the Calculus of Quaternions 6.53 



Mr. R. K. McClung on the Relation between the Rate of 

 Recombination of Ions in Air and the Temperature of the 



Air 655 



Prof. W. M*^E. Orr on the Impossibility of Undamped 



Vibrations in an Unbounded Dielectric 667 



Prof. J. J. Thomson on the Magnetic Properties of Sj'stems of 



Corpuscles describiug Circular Orbits 673 



Mr. W. E. Williams on the Influence of Stress and of Tem- 

 perature on the Magnetic Change of Resistance in Iron, 



IS^ickel, and JS^ckel-Steel. (Plate XXVII.) 693 



Mr. T. L. Bennett on " Minimum Deviation through a Prism." 697 

 Prof. C. Runge on the Relationship between Spectra and 



Atomic Weights \ 698 



Lord Blythswood and Mr. H. S. Allen on Radium Radiation 



and Contact Electricity 701 



Dr. W. Stroud and Mr. J. H. Gates on the Application of 

 Alternating Currents to the Calibration of Capacity-boxes, 

 and to the Comparison of Capacities and Inductances .... 707 



]\Ir. J. H. Jeans on the Kinetic Theory of Gases 720 



Xotices respecting New Books : — 



Mr. C. Riborg Mann's Manual of Advanced Optics 722 



Ossian Aschan's Die Konstitution des Kamphers und 



seiner Wichtigsten Derivate 723 



Journal de Chimie Physique 723 



Prof. Osborne Reynolds's Papers on Mechanical and 



Physical Subjects 723 



Proceedings of the Geological Society : — 



Mr. E. H. Cunningham-Craig on Metamorphism in the 



Loch Lomond District 724 



Mr. H. Dyke Acland on a New Cave on the Eastern 



Side of 'Gibraltar 721 



Intelligence and Miscellaneous Articles : — 



Prof. A. Righi on the Influence of Magnetic Eield on 

 Thermal Conductivity 725 



Index 726 



