﻿CONTENTS 
  OF 
  VOL. 
  Ill 
  

  

  (SIXTH 
  SERIES). 
  

  

  NUMBER 
  XI1L— 
  JANUARY 
  1902. 
  

  

  Page 
  

  

  Lord 
  Kelvin 
  on 
  the 
  Clustering 
  of 
  Gravitational 
  Matter 
  in 
  

   any 
  part 
  of 
  the 
  Universe 
  1 
  

  

  Dr. 
  W. 
  M. 
  Hicks 
  on 
  the 
  Michel 
  son- 
  Morley 
  Experiment 
  

   relating 
  to 
  the 
  Drift 
  of 
  the 
  .Ether. 
  (Plate 
  I.) 
  9 
  

  

  Mr. 
  R. 
  E. 
  D'Arcy 
  on 
  the 
  Decomposition 
  of 
  Hydrogen 
  Per- 
  

   oxide 
  by 
  Light, 
  and 
  the 
  Electrical 
  Discharging 
  Action 
  of 
  

   this 
  Decomposition 
  42 
  

  

  Mr. 
  Will 
  G. 
  Hormell 
  on 
  the 
  Dielectric 
  Constant 
  of 
  Paraffins. 
  52 
  

  

  Messrs. 
  R. 
  K. 
  McClung 
  and 
  D. 
  Mcintosh 
  on 
  the 
  Absorption 
  

   of 
  Rontgen 
  Rays 
  by 
  Aqueous 
  Solutions 
  68 
  

  

  Prof. 
  C. 
  Barus 
  on 
  the 
  Behaviour 
  of 
  the 
  Phosphorus 
  Emana- 
  

   tion 
  in 
  Spherical 
  Condensers 
  80 
  

  

  Mr. 
  H. 
  S. 
  Allen 
  on 
  the 
  Effect 
  of 
  Errors 
  in 
  Ruling 
  on 
  the 
  

   Appearance 
  of 
  a 
  Diffraction-Grating 
  92 
  

  

  Lord 
  Kelvin 
  on 
  a 
  New 
  Specifying 
  Method 
  for 
  Stress 
  and 
  

   Strain 
  in 
  an 
  Elastic 
  Solid 
  95 
  

  

  Lord 
  Rayleigh 
  : 
  Some 
  G-eneral 
  Theorems 
  concerning 
  Forced 
  

   Vibrations 
  and 
  Resonance 
  97 
  

  

  Dr. 
  V. 
  H. 
  Veley 
  and 
  Mr. 
  J. 
  J. 
  Manley 
  on 
  the 
  Ionic 
  and 
  

   Thermal 
  Coefficients 
  of 
  Nitric 
  Acid 
  118 
  

  

  Mr. 
  B. 
  Hopkinson 
  on 
  the 
  Necessity 
  for 
  Postulating 
  an 
  ^Ether 
  123 
  

  

  Mr. 
  H. 
  S. 
  Allen 
  on 
  the 
  Relation 
  between 
  Primary 
  and 
  

   Secondary 
  Rontgen 
  Radiation 
  126 
  

  

  Prof. 
  R. 
  W. 
  Wood 
  on 
  the 
  Anomalous 
  Dispersion 
  of 
  Sodium 
  

   Vapour. 
  (Plates 
  II.-IV.) 
  128 
  

  

  Mr. 
  Harold 
  Hilton 
  on 
  Capillary 
  Constants 
  of 
  Crystal 
  Faces. 
  . 
  144 
  

  

  Prof. 
  J. 
  P. 
  Kuenen 
  and 
  Mr. 
  W. 
  Gr. 
  Robson 
  on 
  the 
  Vapour- 
  

   Pressures 
  of 
  Carbon 
  Dioxide 
  and 
  of 
  Ethane 
  at 
  Tempera- 
  

   tures 
  below 
  0° 
  C. 
  . 
  149 
  

  

  Dr. 
  R. 
  A. 
  Lehfeldt 
  on 
  a 
  Voltameter 
  for 
  Small 
  Currents 
  .... 
  158 
  

  

  