﻿IV 
  CONTENTS 
  OF 
  VOL. 
  XLV. 
  FIFTH 
  SERIES. 
  

  

  NUMBEE 
  CCLXXIIL— 
  FEBEUAEY. 
  

  

  Page 
  

   Mr. 
  J. 
  S. 
  Townsend 
  on 
  the 
  Electrical 
  Properties 
  of 
  Newly 
  

  

  Prepared 
  Gases 
  125 
  

  

  Prof. 
  J. 
  G. 
  MacGregor 
  and 
  Mr. 
  E. 
  H. 
  Archibald 
  on 
  the 
  

  

  Calculation 
  of 
  the 
  Conductivity 
  of 
  Aqueous 
  Solutions 
  con- 
  

   taining 
  Two 
  Electrolytes 
  with 
  no 
  Common 
  Ion 
  151 
  

  

  Mr. 
  B. 
  Appleyard 
  on 
  the 
  Failure 
  of 
  German 
  Silver 
  and 
  

  

  Platinoid 
  Wires 
  157 
  

  

  Prof. 
  A. 
  Battelli 
  on 
  the 
  Analogy 
  between 
  the 
  Cathodic 
  Eays 
  

  

  and 
  those 
  of 
  Eontgen 
  163 
  

  

  Prof. 
  J. 
  J. 
  Thomson 
  on 
  a 
  Theory 
  of 
  the 
  Connexion 
  between 
  

  

  Cathode 
  and 
  Eontgen 
  Eays 
  172 
  

  

  Mr. 
  E. 
  J. 
  Jervis-Smith 
  on 
  a 
  New 
  Method 
  of 
  Measuring 
  the 
  

  

  Torsional 
  xingle 
  of 
  a 
  Botating 
  Shaft 
  or 
  Spiral 
  Spring 
  .... 
  183 
  

   Messrs. 
  J. 
  Trowbridge 
  and 
  J. 
  E. 
  Burbank 
  on 
  the 
  Source 
  of 
  

  

  the 
  a'-Bays 
  185 
  

  

  Mr. 
  J. 
  H. 
  Vincent 
  on 
  the 
  Photography 
  of 
  Eipples. 
  (Second 
  

  

  Paper.) 
  (Plates 
  XX.-XX1I.) 
  .....' 
  191 
  

  

  Dr. 
  P. 
  Zeeman 
  on 
  Measurements 
  concerning 
  Eadiation- 
  

  

  Phenomena 
  in 
  the 
  Magnetic 
  Eield. 
  — 
  (I.) 
  . 
  . 
  . 
  197 
  

  

  Notices 
  respecting 
  New 
  Books 
  : 
  — 
  

  

  Mr. 
  J. 
  H. 
  Bridges's 
  The 
  ' 
  Opus 
  Majus 
  ' 
  of 
  Eoger 
  Bacon. 
  201 
  

  

  Prof. 
  J. 
  Perry's 
  Applied 
  Mechanics 
  202 
  

  

  A. 
  Garbasso's 
  15 
  Lezioni 
  Sperimentali 
  su 
  la 
  Luce 
  

  

  considerata 
  come 
  Eenomeno 
  Elettromagnetico 
  204 
  

  

  On 
  Eeal 
  and 
  Apparent 
  Freezing-Points 
  and 
  the 
  Freezing- 
  

  

  Point 
  Methods, 
  bv 
  Meyer 
  Wildermann, 
  Ph.D 
  204 
  

  

  NUMBEE 
  CCLXXIV.— 
  MAECH. 
  

  

  Dr. 
  C. 
  Chree's 
  Notes 
  on 
  Thermometry 
  205 
  

  

  Mr. 
  J. 
  Eose-Innes 
  on 
  Lord 
  Kelvin's 
  Absolute 
  Method 
  of 
  

   Graduating 
  a 
  Thermometer 
  227 
  

  

  Dr. 
  G. 
  A. 
  Miller 
  on 
  the 
  Simple 
  Isomorphisms 
  of 
  a 
  Sub- 
  

   stitution-Group 
  to 
  itself 
  234 
  

  

  Dr. 
  J. 
  C. 
  Beattie 
  on 
  the 
  Electric 
  Eesisiance 
  of 
  Cobalt, 
  

   Iron, 
  and 
  Nickel 
  Films 
  in 
  Magnetic 
  Fields 
  of 
  various 
  

   strengths 
  243 
  

  

  Mr. 
  G. 
  B. 
  Bryan 
  on 
  the 
  Determination 
  of 
  the 
  Conduciivity 
  

   of 
  Liquids 
  in 
  Thin 
  Layers 
  253 
  

  

  Prof. 
  J. 
  Zeleny 
  on 
  Air 
  Electrified 
  "by 
  the 
  Discharging 
  Action 
  

   of 
  Ultra-violet 
  Light 
  272 
  

  

  