﻿VI 
  CONTENTS 
  OF 
  VOL. 
  XVIII. 
  SIXTH 
  SERIES. 
  

  

  NUMBEE 
  CVI.— 
  OCTOBER. 
  

  

  Page 
  

  

  Sir 
  J. 
  J. 
  Thomson 
  on 
  Striations 
  in 
  the 
  Electric 
  Discharge 
  . 
  . 
  44i 
  

  

  Dr. 
  J. 
  Morrow 
  on 
  the 
  Lateral 
  Deflexion 
  and 
  Vibration 
  of 
  

   " 
  Olamped-Directed 
  " 
  Bars 
  452 
  

  

  Mr. 
  L. 
  Vegard 
  on 
  the 
  Electric 
  Discharge 
  through 
  the 
  Gases 
  

   HCl, 
  HBr, 
  and 
  HI. 
  (Plate 
  XIV.) 
  465 
  

  

  Mr. 
  W. 
  J. 
  Harrison 
  on 
  the 
  Decay 
  of 
  Waves 
  in 
  a 
  Canal 
  .... 
  483 
  

  

  Dr. 
  E. 
  D. 
  Kleeman 
  on 
  some 
  Relations 
  in 
  Capillarity 
  491 
  

  

  Messrs. 
  (>. 
  N. 
  Lewis 
  and 
  R. 
  C. 
  Tolman 
  on 
  the 
  Principle 
  of 
  

   Relativity, 
  and 
  Non-Newtonian 
  Mechanics 
  . 
  . 
  510 
  

  

  Dr. 
  H. 
  Wilde 
  on 
  the 
  Moving 
  Porce 
  of 
  Terrestrial 
  and 
  Celestial 
  

   Bodies 
  in 
  Relation 
  to 
  the 
  Attraction 
  of 
  Grravitation 
  523 
  

  

  Prof. 
  R. 
  W. 
  Wood 
  on 
  the 
  Ultra-violet 
  Absorption, 
  Fluores- 
  

   cence, 
  and 
  Magnetic 
  Rotation 
  of 
  Sodium 
  Vapour. 
  (Plates 
  

   XV. 
  & 
  XVL) 
  530 
  

  

  Prof. 
  R. 
  W. 
  Wood 
  on 
  High 
  Purity 
  Interference 
  Phenomena 
  

   of 
  Chlorate 
  of 
  Potash 
  Crystals. 
  (Plate 
  XV. 
  fig. 
  4.) 
  535 
  

  

  Dr. 
  Meyer 
  Wilderman 
  on 
  Velocity 
  of 
  Molecular 
  and 
  Chemical 
  

   Reactions 
  in 
  Heterogeneous 
  Systems. 
  (Plates 
  XVII. 
  & 
  

   XVIII.) 
  538 
  

  

  Prof. 
  J. 
  Joly 
  ou 
  the 
  Radioactivity 
  of 
  certain 
  Lavas 
  577 
  

  

  Messrs. 
  A. 
  T. 
  Cameron 
  and 
  E. 
  Oettinger 
  on 
  the 
  Electromotive 
  

   Porces 
  produced 
  by 
  Acid 
  and 
  Alkaline 
  Solutions 
  streaming 
  

   through 
  Grlass 
  Capillary 
  Tubes 
  586 
  

  

  Mr. 
  T. 
  S. 
  Taylor 
  on 
  the 
  Retardation 
  of 
  Alpha 
  Rays 
  by 
  Metals 
  

   and 
  GasevS 
  604 
  

  

  Messrs. 
  E. 
  Soddy 
  and 
  A. 
  S.Russell 
  on 
  the 
  y-Rays 
  of 
  Uranium 
  

   and 
  Radium 
  620 
  

  

  Dr. 
  P. 
  C. 
  Brown 
  on 
  the 
  Kinetic 
  Energy 
  of 
  the 
  Po.-itive 
  Ions 
  

   emitted 
  from 
  various 
  Hot 
  Bodies 
  649 
  

  

  Mr. 
  C. 
  E. 
  Plogley 
  : 
  A 
  Search 
  for 
  the 
  Heavier 
  Gases 
  of 
  the 
  

   Helium 
  Group 
  in 
  Minerals 
  672 
  

  

  Mr. 
  J. 
  W. 
  Waters 
  on 
  Radioactive 
  Minerals 
  in 
  Common 
  Rocks. 
  677 
  

  

  Proceedings 
  of 
  the 
  Geological 
  Society 
  : 
  — 
  

  

  Mr. 
  T. 
  Codrington 
  : 
  Some 
  Notes 
  on 
  the 
  Neighbourhood 
  

  

  of 
  the 
  Victoria 
  Ealls 
  (Rhodesia) 
  . 
  , 
  679 
  

  

  Mr. 
  H. 
  H. 
  Thomas 
  on 
  the 
  Petrography 
  of 
  the 
  New 
  Red 
  

   Sandstone 
  in 
  the 
  West 
  of 
  England 
  6S0 
  

  

  