﻿IV 
  CONTENTS 
  OF 
  VOL. 
  XVI. 
  SIXTH 
  SERIES. 
  

  

  NUMBER 
  XCIL— 
  AUGUST. 
  

  

  Page 
  

   Mr. 
  E. 
  Haigh 
  on 
  Orthobaric 
  Volumes 
  in 
  relation 
  to 
  Pressure 
  

  

  and 
  Temperature. 
  (Plates 
  VI. 
  & 
  VII.) 
  201 
  

  

  Prof. 
  A. 
  S. 
  Eve 
  on 
  the 
  Secondary 
  y 
  Ravs 
  due 
  to 
  the 
  y 
  Rays 
  

  

  of 
  Radium 
  C 
  , 
  ." 
  224 
  

  

  Lord 
  Rayleigh 
  : 
  Acoustical 
  Notes. 
  — 
  VIII 
  235 
  

  

  Mr. 
  L. 
  Vegard 
  : 
  Researches 
  upon 
  Osmosis 
  and 
  Osmotic 
  

  

  Pressure. 
  (Plate 
  VIII.) 
  247 
  

  

  Dr. 
  J. 
  W. 
  Nicholson 
  on 
  Bessel 
  Functions 
  of 
  Equal 
  Argument 
  

  

  and 
  Order 
  271 
  

  

  Messrs. 
  E. 
  W. 
  B. 
  Gill 
  and 
  E. 
  B. 
  Pidduck 
  on 
  the 
  Genesis 
  of 
  

   Ions 
  by 
  Collision 
  of 
  Positive 
  and 
  .Negative 
  Ions 
  in 
  a 
  Gas. 
  

  

  Experiments 
  on 
  Argon 
  and 
  Helium 
  280 
  

  

  Dr. 
  H. 
  L. 
  Bronson 
  on 
  the 
  Relative 
  Activity 
  of 
  the 
  Emanation 
  

  

  and 
  the 
  Active 
  Deposit 
  from 
  Thorium 
  aud 
  from 
  Actinium. 
  291 
  

   Prof. 
  E. 
  Rutherford 
  : 
  Experiments 
  with 
  the 
  Radium 
  Emana- 
  

   tion. 
  (1) 
  The 
  Volume 
  of 
  the 
  Emanation 
  300 
  

  

  Prof. 
  E. 
  Rutherford 
  and 
  Mr. 
  T. 
  Royds 
  on 
  the 
  Spectrum 
  of 
  the 
  

  

  Radium 
  Emanation. 
  (Plates 
  X. 
  & 
  XI.) 
  313 
  

  

  Dr. 
  G. 
  Johnstone 
  Stoney 
  on 
  Telescopic 
  Vision. 
  (Plate 
  XII.) 
  31S 
  

   Mr. 
  W. 
  Duddell 
  on 
  Short 
  Spark 
  Phenomena. 
  (Plates 
  XIII.- 
  

  

  XV.) 
  340 
  

  

  Dr. 
  S. 
  Tolver 
  Preston 
  on 
  some 
  Physical 
  Relations 
  affecting 
  

  

  Matter 
  in 
  Diverse 
  Stages 
  of 
  Subdivision 
  345 
  

  

  Notices 
  respecting 
  New 
  Books 
  : 
  — 
  

  

  Dr. 
  W. 
  Cawthorne 
  Unwin's 
  Treatise 
  on 
  Hydraulics 
  . 
  . 
  351 
  

   Intelligence 
  and 
  Miscellaneous 
  Articles 
  : 
  — 
  

  

  Remarks 
  on 
  the 
  Paper 
  of 
  Plans 
  Greiger 
  : 
  " 
  The 
  Irregu- 
  

   larities 
  in 
  the 
  Radiation 
  from 
  Radioactive 
  Bodies," 
  

   by 
  Dr. 
  E. 
  Meyer 
  and 
  Dr. 
  E. 
  Regener 
  352 
  

  

  NUMBER 
  XCI 
  LI.— 
  SEPTEMBER. 
  

  

  Prof. 
  O. 
  W. 
  Richardson 
  and 
  Mr. 
  E. 
  C. 
  Brown 
  on 
  the 
  Kinetic 
  

   Energy 
  of 
  the 
  Negative 
  Electrons 
  emitted 
  by 
  Hot 
  Bodies 
  . 
  353 
  

  

  Prof. 
  J. 
  C. 
  McLennan 
  and 
  Mr. 
  W. 
  T. 
  Kennedy 
  on 
  the 
  

   Radioactivity 
  of 
  Potassium 
  and 
  other 
  Alkali 
  Metals 
  377 
  

  

  Mr. 
  C. 
  S. 
  Wright: 
  Note 
  on 
  an 
  Improvement 
  in 
  the 
  Method 
  

   of 
  Determining 
  Visibility 
  Curves 
  395 
  

  

  Mr. 
  L. 
  Vegard 
  : 
  Researches 
  upon 
  Osmosis 
  ami 
  Osmotic 
  

   Pressure. 
  (Plate 
  IX.) 
  396 
  

  

  Prof. 
  E. 
  B. 
  Wilson 
  on 
  the 
  Principle 
  of 
  Relativity 
  4l!> 
  

  

  Mr. 
  E. 
  Cunningham 
  on 
  the 
  Principle 
  of 
  Relativity 
  and 
  the 
  

   Electromagnetic 
  Mass 
  of 
  the 
  Electron. 
  A 
  Reply 
  to 
  

   Dr. 
  A. 
  II.' 
  Bucherer 
  423 
  

  

  