﻿CONTENTS 
  OF 
  VOL. 
  XXVI. 
  SIXTH 
  SERIES. 
  Vll 
  

  

  Page 
  

   Dr. 
  Norman 
  Campbell 
  on 
  a 
  Special 
  Case 
  of 
  Gaseous 
  Con- 
  

  

  d 
  action 
  912 
  

  

  Mr. 
  A. 
  Ferguson 
  on 
  the 
  Forces 
  acting 
  on 
  a 
  Solid 
  Sphere 
  in 
  

  

  contact 
  with 
  a 
  Liquid 
  Surface 
  925 
  

  

  Notices 
  respecting 
  New 
  Books 
  : 
  — 
  

  

  Dr. 
  L. 
  Silberstein's 
  Vectorial 
  Mechanics 
  9.35 
  

  

  Bulletin 
  of 
  the 
  Bureau 
  of 
  Standards 
  936 
  

  

  NUMB 
  Ell 
  CLYL— 
  DECEMBER. 
  

  

  Prof. 
  E. 
  Rutherford 
  and 
  Mr. 
  H. 
  Richardson 
  : 
  Analysis 
  of 
  

  

  the 
  y 
  Rays 
  of 
  the 
  Thorium 
  and 
  Actinium 
  Products. 
  

  

  (Plate 
  XIX.) 
  , 
  . 
  937 
  

  

  Messrs. 
  E. 
  Marsden 
  and 
  A. 
  B. 
  Wood 
  on 
  a 
  Method 
  for 
  

  

  the 
  Determination 
  of 
  the 
  Molecular 
  Weights 
  of 
  the 
  

  

  Radioactive 
  Emanations 
  with 
  Application 
  to 
  Actinium 
  

  

  Emanation 
  94S 
  

  

  Prof. 
  A. 
  H. 
  Gibson 
  on 
  the 
  Motion 
  of 
  Long 
  Air-bubbles 
  in 
  a 
  

  

  Vertical 
  Tube. 
  (Plate 
  XX.) 
  952 
  

  

  Mr. 
  R. 
  W. 
  Lawson 
  on 
  the 
  Spectra 
  of 
  High-Frequency 
  

  

  Discharges 
  in 
  Geissler 
  Tubes. 
  (Plates 
  XXI. 
  & 
  XXII.) 
  906 
  

   Mr. 
  R. 
  Rossi 
  on 
  Series 
  of 
  Lines 
  in 
  the 
  Spectrum 
  of 
  Neon. 
  . 
  981 
  

   Mr. 
  J. 
  W. 
  Stewart 
  on 
  a 
  New 
  Solution 
  to 
  an 
  Historical 
  

  

  Theorem 
  in 
  Geometry 
  984 
  

  

  Prof. 
  S. 
  J. 
  Barnett 
  on 
  some 
  Experiments 
  on 
  the 
  Magnetic 
  

  

  Field 
  of 
  two 
  Electromagnets 
  in 
  Rotation 
  987 
  

  

  Mr. 
  H. 
  Ogden 
  on 
  the 
  Recombination 
  of 
  Ions 
  made 
  by 
  

  

  a 
  Rays 
  '. 
  991 
  

  

  Lord 
  Rayleigh 
  on 
  the 
  Stability 
  of 
  the 
  Laminar 
  Motion 
  of 
  

  

  an 
  Inviscid 
  Fluid 
  - 
  r 
  1001 
  

  

  Prof. 
  A. 
  W. 
  Conway 
  on 
  an 
  Electromagnetic 
  Hypothesis 
  as 
  

  

  to 
  the 
  Origin 
  of 
  Series 
  Spectra 
  1010 
  

  

  Dr. 
  R. 
  Pohl 
  and 
  Dr. 
  P. 
  Pringsheim 
  on 
  the 
  Long-wave 
  Limits 
  

  

  of 
  the 
  Normal 
  Photoelectric 
  Effect 
  1017 
  

  

  Mr. 
  H. 
  G.J. 
  Moseley 
  on 
  the 
  High-Frequency 
  Spectra 
  of 
  the 
  

  

  Elements. 
  (Plate 
  XXIII.) 
  1021 
  

  

  Mr. 
  F. 
  W. 
  Wheatley 
  on 
  the 
  Ionization 
  of 
  Gases 
  by 
  Collision 
  

  

  with 
  Low 
  Electric 
  Forces. 
  (Plate 
  XXIV.) 
  1034 
  

  

  Sir 
  J. 
  J. 
  Thomson 
  on 
  the 
  Structure 
  of 
  the 
  Atom 
  1041 
  

  

  Dr. 
  Norman 
  Campbell 
  on 
  the 
  Electrical 
  Resistance 
  of 
  

  

  Mixtures 
  of 
  Xylol 
  and 
  Alcohol 
  1044 
  

  

  Mr. 
  J. 
  R. 
  Wilton 
  on 
  the 
  Highest 
  Wave 
  in 
  Deep 
  Water 
  . 
  . 
  1053 
  

   Intelligence 
  aud 
  Miscellaneous 
  Articles 
  : 
  — 
  

  

  On 
  the 
  Existence 
  of 
  Uranium 
  Y, 
  by 
  G. 
  X. 
  Antonoff 
  . 
  . 
  1058 
  

  

  Index 
  , 
  1U59 
  

  

  