CONTENTS OF VOL. XXVII. 



(SIXTH SEEIES). 



NUMBEE CLVIL— JANUAEY 1914. 



Page 



Prof. J. Joly on the Temperature of Sublimation 1 



Prof. J. H. Jeans on the Interaction between Radiation and 



Free Electrons 14 



Prof. A. Gray on Canonical Eelations in General Dynamics . 22 

 Mr. H. E. Hasse on the Equations of Electrodynamics for 



Moving Ponderable Media and the Principle of Eelativity . 43 

 Mr. H. H. Poole on the Thermal Conductivity and Specific 



Heat of Granite and Basalt at High Temperatures 58 



Dr. Norman Campbell on Delta Eays from Gases 83 



Mr. E. Talbot Paris and Prof. A. W. Porter : An Experiment 



on Eotatory Polarization in Liquids . 91 



Mr. E. Simeon on the Viscosity of Calcium Chloride 



Solutions 95 



Lord Eayleigh : Further Applications of Bessel's Functions 



of high order to the Whispering Gallery and allied 



Problems 100 



Mr. "W. N. Fenninger on the Hall Effect in Liquid and 



Solid Mercury 109 



Dr. A. S. Eussell and Mr. J. Chadwick on the y Eays of 



Polonium, Eadium, and Eadioactinium 112 



Prof. H. Nagaoka and Mr. T. Takamine on Crossed Spectra 



obtained by Combinations of Different Interferometers, 



and their Applications to the Measurement of Difference 



in Wave-lengths. (Plate I.) 126 



Dr. H. Bateman on the Classification of Electromagnetic 



Fields ' 136 



Mr. E. J. Pocock on the Action of a disturbing Force in the 



restricted Problem of Three Bodies 147 



Mr. J. Eose-Innes on the Physical Interpretation of the 



Michelson-Morley Experimeut 150 



Messrs. E. M. Deeley and P. H. Parr on the Hintereis 



Glacier 153 



Mr. H. Moore on the Ionization in various Compounds of 



Carbon, Hydrogen, and Oxygen by homogeneous X- 



radiation 177 



Dr. Irving Langnmir on the Heat of Formation of Hydrogen 



from Hydrogen Atoms 188 



Dr. B. Hodgson on Heating Effects at the Anode in Vacuum- 

 Tubes 189 



Mr. C. H. Lander on the Application of Graphical Methods 



to the Solution of Problems on Struts and Tie-Rods with 



Lateral and Non- Axial Loads , 203 



