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  Hygvometric 
  Method. 
  

  

  383 
  

  

  D. 
  

  

  W. 
  

  

  A. 
  

  

  /i. 
  

  

  u 
  

  

  Diff. 
  

  

  Acid. 
  

  

  V. 
  

  

  200 
  

  

  15-2 
  

  

  21-4 
  

  

  10-9 
  

  

  10-4 
  

  

  4-0-4 
  

  

  A 
  

  

  4-5 
  

  

  200 
  

  

  157 
  

  

  22-0 
  

  

  11-6 
  

  

  11-5 
  

  

  4-01 
  

  

  A 
  

  

  

  

  20-9 
  

  

  152 
  

  

  21-9 
  

  

  10-5 
  

  

  105 
  

  

  00 
  

  

  A 
  

  

  

  

  22-5 
  

  

  16-7 
  

  

  23-8 
  

  

  11-8 
  

  

  11-9 
  

  

  -o-i 
  

  

  A 
  

  

  5 
  

  

  219 
  

  

  15-9 
  

  

  22-6 
  

  

  110 
  

  

  107 
  

  

  4-03 
  

  

  A 
  

  

  4 
  

  

  22-2 
  

  

  161 
  

  

  22-9 
  

  

  11-2 
  

  

  10-9 
  

  

  +0-3 
  

  

  A 
  

  

  3 
  

  

  227 
  

  

  164 
  

  

  23-3 
  

  

  11-4 
  

  

  iro 
  

  

  4-04 
  

  

  A 
  

  

  4 
  

  

  22 
  6 
  

  

  16-2 
  

  

  25-6 
  

  

  111 
  

  

  110 
  

  

  +01 
  

  

  B 
  

  

  

  

  21-6 
  

  

  14-8 
  

  

  21-6 
  

  

  98 
  

  

  9-4 
  

  

  4-0-4 
  

  

  A 
  

  

  

  

  23-9 
  

  

  17-0 
  

  

  241 
  

  

  11-6 
  

  

  111 
  

  

  + 
  0-5 
  

  

  A 
  

  

  4 
  

  

  22-9 
  

  

  160 
  

  

  23-2 
  

  

  10-7 
  

  

  106 
  

  

  4-0-1 
  

  

  A 
  

  

  3 
  

  

  27-1 
  

  

  20-2 
  

  

  28-2 
  

  

  14-8 
  

  

  150 
  

  

  -0-2 
  

  

  A 
  

  

  3 
  

  

  26-3 
  

  

  19-4 
  

  

  27-2 
  

  

  139 
  

  

  14-2 
  

  

  -0-3 
  

  

  A 
  

  

  2 
  

  

  21-3 
  

  

  143 
  

  

  21-3 
  

  

  93 
  

  

  9-2 
  

  

  4-01 
  

  

  A 
  

  

  3 
  

  

  23-5 
  

  

  16-5 
  

  

  23-8 
  

  

  11-1 
  

  

  11-0 
  

  

  +01 
  

  

  A 
  

  

  2 
  

  

  240 
  

  

  16-8 
  

  

  24-1 
  

  

  11-3 
  

  

  110 
  

  

  +0-3 
  

  

  A 
  

  

  3 
  

  

  21-7 
  

  

  144 
  

  

  21-4 
  

  

  93 
  

  

  9-0 
  

  

  +0-3 
  

  

  A 
  

  

  

  

  21-2 
  

  

  140 
  

  

  23-3 
  

  

  9-0 
  

  

  92 
  

  

  -0-2 
  

  

  B 
  

  

  

  

  21-4 
  

  

  13-8 
  

  

  232 
  

  

  87 
  

  

  8-8 
  

  

  -0-2 
  

  

  B 
  

  

  2 
  

  

  27-0 
  

  

  19-4 
  

  

  27-6 
  

  

  13-7 
  

  

  137 
  

  

  00 
  

  

  A 
  

  

  5 
  

  

  232 
  

  

  156 
  

  

  25-3 
  

  

  10-2 
  

  

  10-2 
  

  

  o-o 
  

  

  B 
  

  

  2 
  

  

  24-9 
  

  

  17-1 
  

  

  27-6 
  

  

  11*4 
  

  

  117 
  

  

  -0-3 
  

  

  B 
  

  

  1 
  

  

  236 
  

  

  15-9 
  

  

  23-2 
  

  

  10-3 
  

  

  9-9 
  

  

  +0-4 
  

  

  A 
  

  

  4 
  

  

  27-2 
  

  

  19-2 
  

  

  27-2 
  

  

  133 
  

  

  132 
  

  

  +0-1 
  

  

  A 
  

  

  4 
  

  

  24-0 
  

  

  15-9 
  

  

  26-2 
  

  

  10-2 
  

  

  105 
  

  

  -0-3 
  

  

  B 
  

  

  2 
  

  

  227 
  

  

  146 
  

  

  22-0 
  

  

  92 
  

  

  8-9 
  

  

  +0-3 
  

  

  A 
  

  

  2-4 
  

  

  24-9 
  

  

  16-2 
  

  

  239 
  

  

  102 
  

  

  9-8 
  

  

  +0-4 
  

  

  A 
  

  

  

  

  22-1 
  

  

  133 
  

  

  229 
  

  

  7-9 
  

  

  77 
  

  

  +0-2 
  

  

  B 
  

  

  3 
  

  

  255 
  

  

  16-7 
  

  

  27-5 
  

  

  10-6 
  

  

  11-1 
  

  

  -05 
  

  

  B 
  

  

  2 
  

  

  25-9 
  

  

  170 
  

  

  27-5 
  

  

  10-8 
  

  

  107 
  

  

  +0-1 
  

  

  A 
  

  

  1 
  

  

  27-2 
  

  

  18-2 
  

  

  263 
  

  

  11-9 
  

  

  117 
  

  

  +0-2 
  

  

  A 
  

  

  5 
  

  

  24-5 
  

  

  154 
  

  

  23-3 
  

  

  9-4 
  

  

  9-3 
  

  

  +0-1 
  

  

  A 
  

  

  

  

  234 
  

  

  14-3 
  

  

  22-2 
  

  

  8-5 
  

  

  8-8 
  

  

  -0-3 
  

  

  A 
  

  

  

  

  233 
  

  

  14-0 
  

  

  21-6 
  

  

  8-2 
  

  

  7-8 
  

  

  4-04 
  

  

  A 
  

  

  

  

  230 
  

  

  13-7 
  

  

  214 
  

  

  8-0 
  

  

  77 
  

  

  +0-3 
  

  

  A 
  

  

  2 
  

  

  26-4 
  

  

  171 
  

  

  28-2 
  

  

  10-8 
  

  

  11-3 
  

  

  -0-5 
  

  

  B 
  

  

  1 
  

  

  25-4 
  

  

  160 
  

  

  24-0 
  

  

  9-7 
  

  

  9-6 
  

  

  +0-1 
  

  

  A 
  

  

  2 
  

  

  261 
  

  

  16-5 
  

  

  27-2 
  

  

  10-1 
  

  

  10-2 
  

  

  -01 
  

  

  B 
  

  

  2 
  

  

  233 
  

  

  137 
  

  

  21-5 
  

  

  7'9 
  

  

  76 
  

  

  +0-3 
  

  

  A 
  

  

  3 
  

  

  253 
  

  

  15-6 
  

  

  263 
  

  

  9-3 
  

  

  9-4 
  

  

  -o-i 
  

  

  B 
  

  

  1 
  

  

  25-6 
  

  

  15-9 
  

  

  23-8 
  

  

  9-5 
  

  

  91 
  

  

  +0-4 
  

  

  A 
  

  

  

  

  25-5 
  

  

  15-7 
  

  

  23-8 
  

  

  9-4 
  

  

  91 
  

  

  +0-3 
  

  

  A 
  

  

  1 
  

  

  236 
  

  

  13-6 
  

  

  21-7 
  

  

  7-6 
  

  

  7-6 
  

  

  00 
  

  

  A 
  

  

  1 
  

  

  24-6 
  

  

  143 
  

  

  222 
  

  

  8-0 
  

  

  7-5 
  

  

  +0-5 
  

  

  A 
  

  

  2 
  

  

  261 
  

  

  15-6 
  

  

  26-7 
  

  

  90 
  

  

  94 
  

  

  -0-4 
  

  

  B 
  

  

  2 
  

  

  273 
  

  

  16-5 
  

  

  27-7 
  

  

  9-7 
  

  

  97 
  

  

  00 
  

  

  A 
  

  

  2 
  

  

  25-0 
  

  

  14-1 
  

  

  22-2 
  

  

  7-6 
  

  

  7-1 
  

  

  +05 
  

  

  A 
  

  

  4 
  

  

  250 
  

  

  14-1 
  

  

  22-2 
  

  

  76 
  

  

  71 
  

  

  +0-5 
  

  

  A 
  

  

  

  

  244 
  

  

  13-4 
  

  

  242 
  

  

  7'0 
  

  

  7-4 
  

  

  -0-4 
  

  

  A 
  

  

  

  

  ; 
  26-9 
  

  

  158 
  

  

  27-2 
  

  

  8-9 
  

  

  9-3 
  

  

  -0-4 
  

  

  A 
  

  

  3 
  

  

  27-1 
  

  

  15-7 
  

  

  27-1 
  

  

  8-7 
  

  

  90 
  

  

  -0-3 
  

  

  A 
  

  

  3 
  

  

  25-5 
  

  

  143 
  

  

  22-8 
  

  

  76 
  

  

  7-6 
  

  

  o-o 
  

  

  B 
  

  

  2 
  

  

  25-7 
  

  

  143 
  

  

  23-2 
  

  

  7-5 
  

  

  8-0 
  

  

  -0-5 
  

  

  A 
  

  

  

  

  26-6 
  

  

  146 
  

  

  23-2 
  

  

  76 
  

  

  7-1 
  

  

  4-0-5 
  

  

  A 
  

  

  3 
  

  

  271 
  

  

  14-9 
  

  

  24-0 
  

  

  7-7 
  

  

  8-0 
  

  

  -Q'3 
  

  

  A 
  

  

  2 
  

  

  263 
  

  

  142 
  

  

  25-2 
  

  

  7-2 
  

  

  7-0 
  

  

  +0-2 
  

  

  B 
  

  

  4 
  

  

  284 
  

  

  162 
  

  

  28-1 
  

  

  8-8 
  

  

  92 
  

  

  -0-4 
  

  

  B 
  

  

  2 
  

  

  25-9 
  

  

  13-3 
  

  

  24-8 
  

  

  64 
  

  

  6-8 
  

  

  -0-4 
  

  

  B 
  

  

  4 
  

  

  293 
  

  

  165 
  

  

  28-1 
  

  

  8-8 
  

  

  8-4 
  

  

  +0-4 
  

  

  A 
  

  

  

  

  25-4 
  

  

  12-5 
  

  

  24-0 
  

  

  5-7 
  

  

  6-1 
  

  

  -0-4 
  

  

  A 
  

  

  3 
  

  

  248 
  

  

  11-8 
  

  

  232 
  

  

  51 
  

  

  5-6 
  

  

  -0-5 
  

  

  A 
  

  

  1 
  

  

  29-1 
  

  

  16-1 
  

  

  28-2 
  

  

  8-4 
  

  

  8-8 
  

  

  -0-4 
  

  

  A 
  

  

  a 
  1 
  

  

  