﻿50 
  

  

  W. 
  P. 
  White 
  — 
  Specific 
  Heat 
  Determination. 
  

  

  Above 
  1200° 
  it 
  was 
  necessary 
  to 
  extend 
  the 
  equipoten- 
  

   tial 
  shield 
  11 
  to 
  the 
  platinum 
  container. 
  This 
  was 
  done 
  

   by 
  means 
  of 
  a 
  fine 
  (0-1 
  mm.) 
  wire, 
  which 
  pulled 
  away 
  as 
  

   the 
  container 
  fell. 
  

  

  2. 
  In 
  the 
  metal-bath 
  furnace. 
  — 
  The 
  iron 
  dropping 
  

   latch, 
  used 
  throughout 
  in 
  the 
  iron 
  furnace, 
  was 
  improved 
  

  

  Fig. 
  3. 
  Apparatus 
  of 
  Marquardt 
  material 
  and 
  platinum 
  for 
  automatically- 
  

   dropping 
  the 
  platinum 
  container, 
  Pt.C. 
  One-third 
  size. 
  L, 
  latch; 
  V, 
  its 
  

   fulcrum; 
  MM, 
  tubes, 
  about 
  -8 
  mm. 
  in 
  diameter; 
  W, 
  wire, 
  whose 
  pull 
  

   unlatches 
  the 
  bail 
  of 
  the 
  container; 
  CT, 
  charge 
  thermoelement; 
  FT, 
  fur- 
  

   nace 
  thermoelement 
  ; 
  P^ 
  P 
  2 
  , 
  shielding 
  partitions 
  ; 
  H, 
  furnace 
  winding. 
  The 
  

   platinum 
  tube 
  around 
  CT 
  in 
  the 
  container 
  is 
  supposed 
  to 
  be 
  cut 
  away. 
  L 
  is 
  

   2-3 
  mm. 
  thick. 
  MM 
  were 
  covered 
  with 
  sheet 
  platinum, 
  which 
  was 
  part 
  of 
  

   the 
  equipotential 
  shield. 
  

  

  by 
  arranging 
  it 
  as 
  in 
  fig. 
  4. 
  The 
  essential 
  thing 
  here 
  is 
  

   that 
  the 
  thrust 
  upon 
  the 
  handle 
  of 
  the 
  container 
  when 
  

   the 
  latch, 
  L, 
  is 
  withdrawn 
  comes 
  in 
  the 
  same 
  horizontal 
  

  

  11 
  Walter 
  P. 
  White, 
  Leakage 
  Prevention 
  by 
  Shielding, 
  Especially 
  in 
  Poten- 
  

   tiometer 
  Systems, 
  J. 
  Am. 
  Chem. 
  Soc, 
  36, 
  2015, 
  1914. 
  

  

  