﻿On 
  Matter 
  in 
  Diverse 
  Stages 
  of 
  Subdivision. 
  345 
  

  

  I 
  do 
  not 
  know 
  the 
  exact 
  ratio 
  between 
  the 
  numbers 
  of 
  

   turns 
  on 
  the 
  primary 
  and 
  on 
  the 
  secondary 
  of 
  this 
  induction- 
  

   coil, 
  but 
  it 
  is 
  probably 
  o£ 
  the 
  order 
  o£ 
  100, 
  so 
  that 
  the 
  35 
  

   milliamperes 
  flowing 
  in 
  the 
  negative 
  direction 
  in 
  the 
  secondary 
  

   wonld 
  correspond 
  to 
  a 
  demagnetizing 
  current 
  of 
  about 
  3^ 
  

   amperes 
  in 
  the 
  primary, 
  which 
  would 
  leave 
  a 
  comparatively 
  

   small 
  margin 
  of 
  resultant 
  magnetizing 
  ampere-turns. 
  

  

  If 
  this 
  is 
  the 
  case, 
  the 
  energy 
  that 
  can 
  be 
  got 
  out 
  of 
  the 
  

   secondary 
  on 
  break 
  is 
  very 
  limited, 
  which 
  would 
  account 
  for 
  

   the 
  rapid 
  dying 
  away 
  of 
  the 
  current 
  to 
  zero 
  when 
  even 
  a 
  very 
  

   small 
  spark-gap 
  is 
  introduced 
  in 
  the 
  circuit. 
  Directly 
  the 
  

   length 
  of 
  the 
  spark-gap 
  is 
  sufficient 
  to 
  prevent 
  the 
  current 
  

   Mowing 
  in 
  the 
  negative 
  direction 
  round 
  the 
  secondary 
  circuit, 
  

   the 
  whole 
  of 
  the 
  demagnetizing 
  effect 
  of 
  the 
  secondary 
  current 
  

   is 
  done 
  away 
  with, 
  and 
  under 
  the 
  conditions 
  of 
  the 
  experiment 
  

   the 
  magnetizing 
  current 
  in 
  the 
  primary 
  is 
  mainly 
  limited 
  by 
  

   the 
  large 
  resistance 
  in 
  the 
  circuit 
  ; 
  hence, 
  we 
  get 
  a 
  very 
  much 
  

   larger 
  amount 
  of 
  energy 
  available 
  directly 
  the 
  secondary 
  

   current 
  is 
  prevented 
  from 
  flowing 
  in 
  the 
  negative 
  direction. 
  

   This 
  I 
  think 
  accounts 
  for 
  the 
  large 
  difference 
  in 
  the 
  size 
  of 
  

   the 
  current 
  waves 
  in 
  fig. 
  6, 
  and 
  shows 
  the 
  great 
  importance 
  

   of 
  preventing 
  any 
  current 
  from 
  flowing 
  round 
  the 
  secondary 
  

   circuit 
  in 
  the 
  negative 
  direction 
  at 
  make 
  when 
  using 
  the 
  

   induction-coil 
  on 
  a 
  high 
  voltage 
  supply. 
  

  

  I 
  made 
  certain 
  that 
  the 
  phenomenon 
  was 
  not 
  due 
  to 
  any 
  

   want 
  of 
  symmetry 
  in 
  the 
  points 
  of 
  the 
  spark-gap 
  by 
  reversing 
  

   the 
  electrodes 
  of 
  the 
  gap 
  and 
  also 
  by 
  interchanging 
  the 
  

   connexions 
  to 
  it. 
  The 
  material 
  of 
  the 
  electrodes 
  did 
  not 
  seem 
  

   to 
  appreciably 
  affect 
  the 
  results, 
  but 
  the 
  shape 
  of 
  the 
  electrodes 
  

   was 
  important 
  in 
  so 
  far 
  that 
  the 
  spark-length 
  at 
  which 
  the 
  

   galvanometer 
  deflexion 
  changed 
  sign 
  depended 
  on 
  the 
  shape. 
  

   Thus 
  with 
  two 
  spheres 
  the 
  galvanometer 
  deflexion 
  changed 
  

   sign 
  at 
  a 
  shorter 
  length 
  than 
  with 
  points. 
  

  

  I 
  have 
  brought 
  these 
  two 
  observations 
  forward 
  in 
  the 
  hope 
  

   that 
  in 
  the 
  discussion 
  either 
  my 
  views 
  as 
  to 
  the 
  explanations 
  

   may 
  be 
  confirmed 
  or 
  that 
  better 
  ones 
  may 
  be 
  suggested. 
  

  

  XXVII. 
  On 
  some 
  Physical 
  Relations 
  affecting 
  Matter 
  in 
  Di- 
  

   verse 
  Stages 
  of 
  Subdivision. 
  By 
  Dr. 
  S. 
  Tolver, 
  Preston 
  *. 
  

  

  THE 
  phrase 
  " 
  Continuity" 
  is 
  employed 
  here 
  in 
  respect 
  to 
  

   certain 
  physical 
  qualities, 
  in 
  actual 
  practice 
  as 
  efficacious 
  

   as 
  if 
  continuity 
  in 
  an 
  absolute 
  sense 
  existed. 
  We 
  refer, 
  

   for 
  instance, 
  to 
  the 
  capacity 
  to 
  maintain 
  a 
  sensibly 
  equable 
  

  

  * 
  Communicated 
  by 
  the 
  Author. 
  

   Phil 
  Mag. 
  S. 
  6. 
  Vol. 
  16. 
  No. 
  92. 
  Aug. 
  1908. 
  2 
  A 
  

  

  