CONTENTS OF VOL. XXIV. 



(FIFTH SEEIES). 



NUMBEE CXLVL— JULY 1887. 



Mr. C. Chree on the Conduction of Heat in Liquids. — -His- 

 torical Treatment 1 



Dr. 1ST. Collie on the Action of Heat on the Salts of Triethyl- 



benzylphosphonium 27 



Dr. J. N. Kruseman on the Potential of the Electric Field 

 in the neighbourhood of a Spherical Bowl, charged or under 



influence. (Plate I.) 38 



Mr. E. C. Eimington on a Modification of a Method of Max- 

 well's for Measuring the Coefficient of Self-induction .... 54 

 Mr. E. H. M. Bosanquet's Note on Magnetization. — On 



Sequences of Eeversals 60 



Mr. 0. Heaviside on the Self-induction of Wires. — Part VII. 63 

 Mr. J. Swinburne's Note on Prof. Carey Foster's Method of 



Measuring the Mutual Induction of two Coils 85 



Dr. G. J. Stoney on the Cause of Iridescence in Clouds .... 87 



Mr. A. P. Chattock on a Magnetic Potentiometer 94 



Mr. C. V. Burton on the " Dimensions " of Temperature in 

 Length, Mass, and Time ; and on an Absolute C.G.S. Unit 



of Temperature 96 



Prof. A. F. Sundell's Eesearches on Spectrum Analysis 98 



Dr. Gr. A. Liebig on the Electrostatic Force required to pro- 

 duce Sparks in Air and other Gases. (Plate II.) 106 



Mr. W. Sutherland on the Law of Molecular Force 113 



Notices respecting New Books : — 



Mr. F. T. Edgeworth's Metretike : or, the Method of 



Measuring Probability and Utility 134 



Proceedings of the Geological Society r — 



Mr. T. W. E. David on the Evidence of Glacial Action 

 in the Carboniferous and Hawkesbury Series, New 



South Wales 135 



Mr. J. Martin on the Terraces of Eotomahana, New 



Zealand 135 



Capt. F. "W. Hutton on the Eruption of Mount Tarawera 136 

 Mr. C. Eeid on the Origin of Dry Chalk Valleys and of 

 Coombe Eock 137 



