﻿Anomalous 
  Conduction 
  in 
  a 
  Solid 
  Dielectric. 
  

  

  681 
  

  

  corrected 
  as 
  above, 
  and 
  reduced 
  to 
  a 
  fixed 
  value 
  of 
  the 
  sensi- 
  

   tiveness 
  of 
  the 
  electrometer, 
  viz. 
  30'0 
  divisions 
  deflexion 
  for 
  a 
  

   potential 
  difference 
  between 
  the 
  quadrants 
  equal 
  to 
  the 
  e.m.f, 
  

   of 
  one 
  cadmium 
  cell. 
  Each 
  observation 
  in 
  the 
  table 
  represents 
  

   the 
  mean 
  of 
  two 
  sets 
  of 
  observations 
  taken 
  successively; 
  and 
  

   each 
  set 
  itself 
  comprised 
  eight 
  observations, 
  from 
  which 
  a 
  

   mean 
  value 
  was 
  obtained 
  by 
  a 
  systematic 
  combination 
  of 
  the 
  

   readings. 
  The 
  successive 
  readings 
  in 
  each 
  set 
  agreed 
  to 
  

   about 
  05 
  per 
  cent. 
  In 
  the 
  case 
  where 
  the 
  plate 
  C 
  was 
  charged 
  

   positively 
  the 
  potential 
  of 
  the 
  needle 
  was 
  of 
  opposite 
  sign 
  to 
  

   that 
  when 
  C 
  was 
  charged 
  negatively; 
  so 
  that 
  while 
  positive 
  

   numbers 
  in 
  the 
  tables 
  correspond 
  to 
  a 
  rise 
  in 
  potential 
  for 
  

   the 
  first 
  case, 
  they 
  correspond 
  to 
  a 
  fall 
  for 
  the 
  second. 
  

  

  Centre 
  Plate 
  charged 
  Positively. 
  

   Plate 
  A. 
  Plate 
  B. 
  

  

  Movement 
  in 
  56 
  sees. 
  

  

  Mean 
  Time 
  

  

  (in 
  hours 
  and 
  

  

  decimals 
  of 
  an 
  hour). 
  

  

  

  Movement 
  in 
  56 
  sees. 
  

  

  Mean 
  Time 
  

  

  (in 
  hours 
  and 
  

  

  decimals 
  of 
  an 
  hour). 
  

  

  (Reduced 
  as 
  above). 
  

  

  

  (Reduced 
  as 
  above). 
  

  

  +69-5 
  

  

  1-94 
  

  

  -56-3 
  

  

  209 
  

  

  53-2 
  

  

  2-21 
  

  

  

  46-5 
  

  

  2-31 
  

  

  39-5 
  

  

  2-63 
  

  

  

  351 
  

  

  2-76 
  

  

  32-2 
  

  

  301 
  

  

  

  27-4 
  

  

  3-11 
  

  

  22-8 
  

  

  371 
  

  

  

  20-3 
  

  

  383 
  

  

  19-5 
  

  

  414 
  

  

  

  17-5 
  

  

  4-24 
  

  

  140 
  

  

  507 
  

  

  

  12-7 
  

  

  5-19 
  

  

  110 
  

  

  6-14 
  

  

  

  10-1 
  

  

  6-24 
  

  

  7-56 
  

  

  7-42 
  

  

  

  70 
  

  

  7-55 
  

  

  5-5 
  

  

  9-11 
  

  

  

  5-2 
  

  

  9-21 
  

  

  4-6 
  

  

  10-51 
  

  

  

  4-2 
  

  

  10-63 
  

  

  3-4 
  

  

  1272 
  

  

  

  3-3 
  

  

  25-92 
  

  

  1-5 
  

  

  25-53 
  

  

  

  

  

  

  

  

  Centre 
  Plate 
  charged 
  Negatively. 
  

   Plate 
  A. 
  Plate 
  B. 
  

  

  Movement 
  in 
  56 
  sees. 
  

  

  Mean 
  Time 
  

  

  

  (Reduced 
  as 
  above). 
  

   +51-9 
  

  

  (in 
  hours 
  and 
  

   decimals 
  of 
  an 
  hour). 
  

  

  

  2-74 
  

  

  42-5 
  

  

  2-99 
  

  

  

  32-3 
  

  

  3-37 
  

  

  

  25-2 
  

  

  392 
  

  

  

  16-6 
  

  

  5-04 
  

  

  

  12-1 
  

  

  6-36 
  

  

  

  8-0 
  

  

  7-98 
  

  

  

  6-55 
  

  

  9-73 
  

  

  

  4-5 
  

  

  12-54 
  

  

  

  Movement 
  in 
  56 
  sees 
  

   (Reduced 
  as 
  above). 
  

  

  42-5 
  

  

  35-6 
  

  

  27-2 
  

  

  21-7 
  

  

  14-7 
  

  

  11-0 
  

  

  7-2 
  

  

  5-8 
  

  

  4'0 
  

  

  Mean 
  Time 
  

  

  (in 
  hours 
  and 
  

  

  decimals 
  of 
  an 
  hour), 
  

  

  2-86 
  

   3-09 
  

   349 
  

   4-06 
  

   5-14 
  

   6-47 
  

   8-14 
  

   9-84 
  

   1272 
  

  

  