﻿on 
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  521 
  

  

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  of 
  different 
  columns. 
  

  

  Fig-. 
  4. 
  

  

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  1.2 
  1.5 
  1.8 
  2.1 
  2.4 
  

  

  Sa/'ura/7o/7 
  Correct 
  Z 
  

  

  Table 
  VII. 
  

   Longitudinal 
  Field. 
  ^ 
  = 
  2*6 
  cm. 
  ; 
  ^ 
  = 
  760 
  mm. 
  

  

  X. 
  

  

  04 
  

  

  10 
  

  

  20 
  

  

  40 
  

  

  10 
  

  

  25 
  

  

  105 
  

  

  420 
  

  

  I. 
  

  

  ill. 
  

  

  •36 
  

  

  •52 
  

  

  •605 
  

  

  •658 
  

  

  •710 
  

  

  •76 
  

  

  •86 
  

  

  •94 
  

  

  0-12 
  

  

  ifl. 
  

  

  •33 
  

  

  •50 
  

  

  •595 
  

  

  •654 
  

  

  •708 
  

  

  •76 
  

  

  •86 
  

  

  

  0-13 
  

  

  ifl. 
  

  

  •19 
  

  

  •34 
  

  

  •548 
  

  

  •635 
  

  

  •704 
  

  

  •76 
  

  

  •86 
  

  

  •96 
  

  

  0-78 
  

  

  ifl. 
  

  

  •15 
  

  

  •29 
  

  

  •498 
  

  

  •623 
  

  

  •704 
  

  

  •76 
  

  

  •86 
  

  

  •94 
  

  

  2-39 
  

  

  

  Transverse 
  

  

  Field 
  

  

  . 
  d 
  = 
  2 
  

  

  '6 
  cm. 
  ; 
  

  

  p=7$0 
  mm. 
  

  

  X. 
  

  

  0-4 
  

  

  0-8 
  

  

  20 
  

  

  4-0 
  

  

  10 
  

  

  26 
  

  

  40 
  

  

  I. 
  

  

  0-44 
  

  

  ifl. 
  

  

  •25 
  

  

  •44 
  

  

  •68 
  

  

  •775 
  

  

  •872 
  

  

  •94 
  

  

  •98 
  

  

  ifl. 
  

  

  •09 
  

  

  •16 
  

  

  •38 
  

  

  •645 
  

  

  •816 
  

  

  •93 
  

  

  •97 
  

  

  2-40 
  

  

  ifl. 
  

  

  •05 
  

  

  •10 
  

  

  •25 
  

  

  •490 
  

  

  •783 
  

  

  •92 
  

  

  •97 
  

  

  ! 
  6-99 
  

  

  