﻿68 
  G. 
  jS. 
  Jamieson 
  — 
  Double 
  Salts 
  of 
  Caesium 
  Chloride. 
  

  

  was 
  in 
  the 
  proportion 
  of 
  3 
  molecules 
  of 
  caesium 
  chloride 
  to 
  one 
  

   of 
  strontium 
  chloride, 
  caesium 
  chloride 
  separated 
  from 
  the 
  solu- 
  

   tion. 
  

  

  100 
  grams 
  of 
  caesium 
  chloride 
  and 
  79 
  grams 
  of 
  crystallized 
  

   strontium 
  chloride 
  were 
  dissolved 
  in 
  about 
  150 
  cc 
  of 
  hot 
  water 
  

   and 
  allowed 
  to 
  cool 
  slowly. 
  After 
  the 
  solution 
  had 
  stood 
  for 
  

   some 
  hours, 
  a 
  crop 
  of 
  very 
  thin 
  leaf-like 
  crystals 
  with 
  a 
  pearly 
  

   luster 
  was 
  obtained. 
  Two 
  other 
  crops 
  of 
  this 
  double 
  salt 
  were 
  

   obtained 
  by 
  concentrating 
  the 
  solution 
  slightly 
  each 
  time 
  after 
  

   the 
  previous 
  crop 
  of 
  crystals 
  had 
  been 
  removed. 
  

  

  The 
  following 
  results 
  were 
  obtained 
  by 
  analysis 
  : 
  

  

  Calculated 
  for 
  Found 
  

  

  5CsC1.2SrCl 
  2 
  .8H 
  2 
  1 
  2 
  3 
  

  

  A 
  B 
  

  

  H 
  2 
  11*03$ 
  10-66 
  10*88$ 
  

  

  CI 
  _. 
  24-50 
  24-48 
  24'33 
  24'13 
  

  

  Sr 
  _ 
  13-43 
  13-36 
  13*36 
  13'24 
  13*20 
  

  

  Cs. 
  51-00 
  51-28 
  

  

  The 
  analyses 
  agree 
  well 
  with 
  the 
  calculated 
  formula, 
  and 
  as 
  

   the 
  crops 
  were 
  carefully 
  examined 
  under 
  the 
  microscope 
  and 
  

   appeared 
  to 
  be 
  homogeneous, 
  there 
  seems 
  to 
  be 
  no 
  doubt 
  as 
  to 
  

   this 
  formula, 
  which 
  is 
  unusual 
  for 
  double 
  halogen 
  salts, 
  and 
  

   which 
  does 
  not 
  agree 
  with 
  the 
  type 
  shown 
  by 
  the 
  caesium 
  cal- 
  

   cium 
  salt. 
  

  

  