﻿Rontgen 
  Rays 
  by 
  Aqueous 
  Solutions. 
  

  

  75 
  

  

  for 
  several 
  salts 
  in 
  solution, 
  and 
  the 
  same 
  general 
  relation 
  was 
  

   found 
  to 
  exist 
  in 
  each 
  case. 
  By 
  plotting 
  percentage 
  absorp- 
  

   tions 
  as 
  ordinates 
  and 
  densities 
  as 
  abscissae, 
  the 
  curve 
  showing 
  

   the 
  variation 
  of 
  absorption 
  with 
  density 
  is 
  obtained. 
  Several 
  

   of 
  these 
  curves 
  For 
  chlorides 
  are 
  shown 
  in 
  figs. 
  2 
  and 
  3. 
  

   The 
  results 
  shown 
  by 
  these 
  curves, 
  along 
  with 
  a 
  number 
  of 
  

   other 
  chlorides, 
  which 
  are 
  not 
  plotted, 
  are 
  given 
  in 
  Tables 
  

   II., 
  III., 
  and 
  IV. 
  Then, 
  for 
  comparison, 
  a 
  determination 
  for 
  

   zinc 
  sulphate 
  is 
  shown 
  in 
  fig. 
  4, 
  the 
  corresponding 
  numbers 
  

   being 
  given 
  in 
  Table 
  V. 
  

  

  Absorption 
  of 
  Chlorides. 
  

   Table 
  II. 
  

  

  Hydrochloric 
  Acid. 
  

  

  Calcium 
  Chloride. 
  

  

  Sodium 
  Chloride. 
  

  

  Density. 
  

  

  Percentage 
  

   Absorption. 
  

  

  Density. 
  

  

  Percentage 
  

   Absorption. 
  

  

  Density. 
  

  

  Percentage 
  

   Absorption. 
  

  

  1-160 
  

   1-112 
  

   1-079 
  

   1-049 
  

   1-026 
  

   1-000 
  

  

  94-2 
  

  

  89-9 
  

   86-9 
  

   80-8 
  

   73-4 
  

   630 
  ! 
  

  

  1-259 
  

   1-135 
  

   1-069 
  

   1-034 
  

   1-018 
  

   1-000 
  

  

  98-0 
  

  

  88-3 
  

   78-8 
  

   73-0 
  

   65-7 
  

   63-0 
  

  

  1-153 
  

   1-078 
  

   1-039 
  

   1019 
  

   1-000 
  

  

  84-2 
  

   76-1 
  

   70-3 
  

   670 
  

   63-0 
  

  

  Table 
  III. 
  

  

  Cadmium 
  Chloride. 
  

  

  Zinc 
  Chloride. 
  

  

  1 
  

  

  1 
  

  

  Copper 
  Chloride. 
  

  

  Density. 
  

  

  Percentage 
  

   Absorption. 
  

  

  ! 
  Density. 
  

  

  Percentage 
  

   Absorption. 
  

  

  Density. 
  

  

  Percentage 
  

   Absorption. 
  

  

  1-310 
  

   1-157 
  

   1077 
  

   1038 
  

   1-018 
  

   1-009 
  

   1-000 
  

  

  99-9 
  

   99-3 
  

   96-6 
  

  

  89-8 
  

   77-6 
  

   72-9 
  

   58-9 
  

  

  1-198 
  

   1104 
  

   1-053 
  

   1026 
  

   1012 
  

   1-000 
  

  

  94-1 
  

   905 
  

  

  83-1 
  

   732 
  

   65-2 
  

   58-9 
  

  

  1-169 
  

   1-085 
  

   1-042 
  

   1-020 
  

   1-009 
  

   1-000 
  

  

  92-3 
  

  

  86-2 
  

   770 
  

   69-0 
  

   643 
  

  

  58-9 
  

  

  