CONTENTS OF VOL. XLIII. SIXTH SERIES. V 



NUMBER COLV.— MARCH. 



Page 

 Dr, J. R. Ash worth on the Theory of the Intrinsic Field of a 



Magnet and the relation of its Magnetic to its characteristic 



Electric and Thermal Properties 401 



Dr. Ludwik Silbersteiu on the Relation between the Projective and 



the Metrical Scales, and its bearing on the Theory of Parallels . . 420 

 Messrs. H. Hartley, A. 0. Ponder, E. J. Bowen, and Dr. T. R. 



Merton : An Attempt to Separate the Isotopes of Chlorine .... 430 

 Mrs. K. Stratton and Prof. J. R. Partington on Latent Heats of 



Fusion. — Part I. Benzophenone, Phenol, and Sulphur 436 



Prof. C. V. Raman and Dr. Nihal Karan Sethi on the Convection of 



Light (Fizeau Effect) in Moving Gases. (Plates VI. & VII.) . . 447 

 Dr. F. H. Ne^winan on Active Modifications of Hydrogen and 



Nitrogen produced by a. Rays 455 



Mr. J. B. Dale on the Analysis of Microseismogiams 463 



Mr. H. P. Waran on an Interferometer Method of determining the 



Phase Difference resulting from Metallic Reflexion. (Plate VIII. ) 471 



Mr. J. L. Glasson on Stopping Power and Atomic Number 477 



Mr. L. C. Jackson on the Dielectric Constants of some of the Esters 



at Low Temperatures 481 



Mr. G. L. Addenbrooke : A Study of Franklin's Experiment on the 



Leyden Jar with Movable Coatings 489 



Sir J. Alfred Ewing on a New Model of Ferromagnetic Induction. . 493 

 Mr. N. C. Krishnaiyar on the Amplitude of Vibrations maintained 



by Forces of Double Frequency 503 



Prof. C. V. Raman and Mr. V. S. Tamma on a New Optical Property 



of Biaxial Crystals 510 



Dr. F. W. Aston and Mr. R. H. Fowler on some Problems of the 



Mass-Spectrograph 514 



Mr. E. II. Synge : A Definition of Simultaneity and the iEther . . 528 



Prof. K. T. Compton on Ionization by Cumulative Action 531 



Mr. John J. Dowling and Miss Katharine M. Preston on the Resist- 

 ance of Electrolytes at High Frequencies 537 



Prof. Frederick Slate on a Graphical Synthesis of the Linear 



Vector Function 545 



Prof. 0. W. Richardson and Mr. F. S. Robertson on Contact Dif- 

 ference of Potential and Thermionic Emission 557 



Mr. B. N. Chuckerbutti on the Deformation of the "Rings and 



Brushes," as observed through a Spath Hemitrope. (Plate IX.) . 560 

 Prof. A. L. Narayan on Coupled Vibrations bv means of a Double 



Pendulum. (Plates X. & XI.) 5G7 



Prof. A. L. Narayan : Mechanical Illustration of three Magneticallv 



Coupled Oscillating Circuits. (Plate XII.) 575 



Prof. F. D. Murnaghan on the Deflexion of a Ray of Light in the 



Solar Gravitational Field 580 



Dr. W. J. Walker on the Effect of Variable Specific Pleat on the 



Discharge of Gases through Orifices or Nozzles 589 



Prof. J. S. Townsend and Mr. V. A. Bailey on the Motion of Elec- 

 trons in Argon , , 593 



Dr. G. B. Jeffery : Identical Relations in Einstein's Theory GOO 



Dr. D. N. Mallik on the Mutual Induction between two Circular 



Currents 604 



Mr. Bernard A. M. Cavanagh on Molecular Thermodynamics 606 



Notices respecting New Books: — 



Mr. J. Edwards's A Treatise on the Integral Calculus 636 



Proceedings of the Geological Society 639 



