﻿PLATES. 
  

  

  I. 
  Illustrative 
  of 
  Prof. 
  L. 
  R. 
  Ingersoll's 
  Paper 
  on 
  Magnetic 
  

   Rotation 
  in 
  Iron 
  Cathode 
  Films. 
  

   II. 
  Illustrative 
  of 
  Dr. 
  Gray 
  and 
  Mr. 
  Ross's 
  Paper 
  on 
  an 
  

   Improved 
  Form 
  of 
  Magnetometer. 
  

   III. 
  Illustrative 
  of 
  Prof. 
  R. 
  W. 
  Wood's 
  Papers 
  on 
  tlie 
  

   Selective 
  Reflexion 
  of 
  Monochromatic 
  Light 
  by 
  Mercury 
  

   Vapour, 
  and 
  on 
  the 
  Damping 
  of 
  Mercury 
  Waves. 
  

   I^^-^'I. 
  illustrative 
  of 
  Prof.^ 
  E. 
  II. 
  Barton 
  and 
  Mr. 
  T. 
  J. 
  Rich- 
  

   mond's 
  Paper 
  on 
  Vibration 
  Curves 
  of 
  Violin 
  G 
  String 
  

   and 
  Belly. 
  

   VII. 
  & 
  VIII. 
  Illusti-ative 
  of 
  Prof. 
  R. 
  W. 
  Wood's 
  Papers 
  on 
  the 
  

   Absorption, 
  Fluorescence, 
  Magnetic 
  Rotation, 
  and 
  

   Anomalous 
  Dispersion 
  of 
  Mercury 
  Vapour, 
  and 
  on 
  the 
  

   Flow 
  of 
  Energy 
  in 
  a 
  System 
  of 
  Interference 
  Fringes. 
  

   IX. 
  Illustrativeof 
  Mr. 
  A. 
  L. 
  Hodges's 
  Paper 
  on 
  the 
  Psycho- 
  

   logical 
  Accommodation 
  of 
  the 
  Lenses 
  of 
  the 
  Eye. 
  

   X.-XII. 
  Illustrative 
  of 
  Dr. 
  H. 
  Stansfield's 
  Paper 
  on 
  the 
  JEchelon 
  

   Spectroscope, 
  and 
  the 
  Structure 
  of 
  the 
  Green 
  Mercury 
  

   Line. 
  

   XIII. 
  Illustrative 
  of 
  Mr. 
  P. 
  V. 
  Bevan's 
  Paper 
  on 
  Anomalous 
  

  

  Dispersion 
  by 
  Metallic 
  Vapours. 
  

   XIV. 
  Ilkistrative 
  of 
  Mr. 
  L. 
  Vejrard's 
  Paper 
  on 
  the 
  Electric 
  

   Discharge 
  through 
  the 
  Gases 
  H(/l. 
  HBr, 
  and 
  HI. 
  

   XV. 
  & 
  XVI. 
  Illustrative 
  of 
  Prof. 
  R. 
  W. 
  Wood's 
  Papers 
  on 
  the 
  Ultra- 
  

   violet 
  Absorption, 
  Fluorescence, 
  and 
  Magnetic 
  Rotation 
  

   of 
  Sodium 
  Vapour, 
  and 
  on 
  High 
  Purity 
  Interference 
  

   Phenomena 
  of 
  Chlorate 
  of 
  Potash 
  Crystals. 
  

   X\I1. 
  & 
  XVIII. 
  Illustrative 
  of 
  Dr. 
  Meyer 
  Wilderman's 
  Paper 
  on 
  Velocity 
  

   of 
  Molecular 
  and 
  Chemical 
  Reactions 
  in 
  Heterogeneous 
  

   Systems. 
  

   XIX. 
  Illustrative 
  of 
  Prof. 
  J. 
  de 
  Kowalski 
  and 
  Dr. 
  U. 
  J. 
  

   Rappel's 
  Paper 
  on 
  Alternating 
  - 
  Current 
  Spark 
  

   Potentials. 
  

   XX. 
  Illustrative 
  of 
  Prof. 
  E. 
  Taylor 
  Jones 
  and 
  Mr. 
  Morris 
  

   Owen's 
  Paper 
  on 
  Musical 
  Arc 
  Oscillation 
  in 
  Coupled 
  

   Circuits. 
  

   XXI. 
  Illustrative 
  of 
  Mr. 
  Taudin 
  Chabot's 
  Paper 
  on 
  a 
  

   (lyrodvnamical 
  Solution 
  of 
  the 
  Problem 
  of 
  the 
  

   Amagnetic 
  Mariner's 
  Compass. 
  

   XXII. 
  Illustrative 
  of 
  Mr. 
  W. 
  T, 
  Kennedys 
  Paper 
  on 
  tlie 
  Active 
  

   Deposit 
  from 
  Actinium 
  in 
  Uniform 
  Electric 
  Fields. 
  

   XXllI. 
  Illustrative 
  of 
  Prof. 
  R. 
  W. 
  Wood\s 
  Paper 
  on 
  Talbot's 
  

   Fringes 
  and 
  the 
  Eclielon 
  Grating. 
  

  

  b 
  

  

  