﻿54: 
  

  

  Mr. 
  W. 
  Gr. 
  Hormell 
  on 
  the 
  

  

  glass 
  tubes 
  are 
  held 
  in 
  place 
  by 
  pressure-screws 
  not 
  shown 
  in 
  

   the 
  figure. 
  This 
  framework, 
  holding 
  the 
  primary, 
  is 
  placed 
  

   in 
  a 
  4 
  x 
  5 
  in. 
  glass 
  jar. 
  Immediately 
  under 
  the 
  primary 
  a 
  

  

  secondary 
  of 
  the 
  same 
  diameter 
  is 
  placed, 
  and 
  its 
  terminals 
  

   are 
  led 
  out 
  through 
  two 
  corks 
  inserted 
  in 
  the 
  side 
  of 
  the 
  jar 
  

   (fig. 
  3). 
  This 
  coil 
  is 
  firmly 
  held 
  in 
  position 
  by 
  three 
  rubber 
  

  

  r 
  T 
  ..3. 
  

  

  posts 
  sent 
  up 
  from 
  a 
  rubber 
  plate 
  placed 
  in 
  the 
  bottom 
  of 
  the 
  

   jar. 
  A 
  mica 
  plate 
  is 
  placed 
  between 
  the 
  primary 
  and 
  secondary, 
  

   the 
  distance 
  between 
  which 
  is 
  regulated 
  by 
  the 
  screw 
  A 
  

   (fig. 
  2). 
  The 
  screw-clamp 
  F 
  (fig. 
  3) 
  holds 
  'the 
  framework 
  

  

  