﻿CONTENTS 
  OF 
  VOL. 
  XXXV. 
  

  

  (SIXTH 
  SEEIES). 
  

  

  NUMBER 
  CCV.— 
  JANUARY 
  1918. 
  

  

  Page 
  

  

  Lord 
  Rayleigh 
  on 
  the 
  Theory 
  of 
  Lubrication 
  1 
  

  

  Prof. 
  H. 
  Nagaoka 
  on 
  the 
  Calculation 
  of 
  the 
  Maximum 
  Force 
  

   between 
  Two 
  Coaxial 
  Circular 
  Currents 
  13 
  

  

  Mr. 
  J. 
  A. 
  Tomkins 
  on 
  the 
  Nodal-Slide 
  Method 
  of 
  Foco- 
  

   metr 
  y 
  21 
  

  

  Mr. 
  T. 
  Carlton 
  Sutton 
  on 
  the 
  Value 
  of 
  the 
  Mechanical 
  Equi- 
  

   valent 
  of 
  Heat 
  27 
  

  

  Dr. 
  L. 
  Silberstein 
  on 
  Light 
  Distribution 
  round 
  the 
  Focus 
  of 
  a 
  

   Lens, 
  at 
  various 
  Apertures 
  30 
  

  

  Mr. 
  F. 
  Twyman 
  on 
  Interferometers 
  for 
  the 
  Experimental 
  

   Study 
  of 
  Optical 
  Systems 
  from 
  the 
  point 
  of 
  view 
  of 
  the 
  

   Wave 
  Theory 
  49 
  

  

  Dr. 
  M. 
  Wolfke 
  on 
  a 
  New 
  Secondary 
  Radiation 
  of 
  Positive 
  

   Rays 
  59 
  

  

  Prof. 
  Barton 
  and 
  Miss 
  Browning 
  on 
  Variably- 
  Coupled 
  Vibra- 
  

   tions 
  : 
  II. 
  Unequal 
  Masses 
  or 
  Periods. 
  (Plates 
  I. 
  & 
  II.). 
  . 
  62 
  

  

  Mr. 
  Nalinimohan 
  Basu 
  on 
  the 
  Diffraction 
  of 
  Light 
  by 
  

   Cylinders 
  of 
  Large 
  Radius. 
  (Plate 
  III.) 
  79 
  

  

  Prof. 
  Sudhansukumar 
  Banerji 
  on 
  Aerial 
  Waves 
  generated 
  by 
  

   Impact. 
  Part 
  II. 
  (Plate 
  IV.) 
  97 
  

  

  Mr. 
  Sisir 
  Kuma 
  Mitraon 
  the 
  Asymmetry 
  of 
  the 
  Illumination- 
  

   Curves 
  in 
  Oblique 
  Diffraction. 
  (Plate 
  V.) 
  112 
  

  

  Dr. 
  J. 
  G-. 
  Leathern 
  on 
  the 
  Two-Dimensional 
  Motion 
  of 
  

   Infinite 
  Liquid 
  produced 
  by 
  the 
  Translation 
  or 
  Rotation 
  of 
  

   a 
  Contained 
  Solid 
  119 
  

  

  