﻿FIFTH 
  REPORT 
  OF 
  THE 
  DIRECTOR 
  I908 
  

  

  221 
  

  

  crystals 
  of 
  this 
  form 
  correspond 
  more 
  closely 
  to 
  the 
  form 
  "" 
  o' 
  -^ 
  

  

  = 
  (21.49.70.32). 
  These 
  latter 
  indexes 
  are, 
  however, 
  too 
  irrational 
  

   to 
  warrant 
  the 
  establishment 
  of 
  the 
  form 
  from 
  the 
  material 
  at 
  hand 
  

   although 
  the 
  angles 
  are 
  given 
  in 
  the 
  accompanying 
  table 
  for 
  the 
  

   sake 
  of 
  comparison. 
  

  

  

  

  

  NUMBER 
  

  

  

  

  

  

  LETTER 
  

  

  ANGLE 
  

  

  OF 
  

  

  READINGS 
  

  

  MEASURED 
  

  

  CALCULATED 
  

  

  

  

  

  

  

  

  ' 
  

  

  

  

  / 
  

  

  C 
  : 
  (T^"" 
  

  

  7180 
  

  

  : 
  8170 
  

  

  6 
  

  

  13 
  

  

  iH 
  

  

  13 
  

  

  loi 
  

  

  - 
  • 
  - 
  I^' 
  

  

  0775 
  

  

  : 
  7075 
  

  

  6 
  

  

  90 
  

  

  47 
  

  

  90 
  

  

  55 
  

  

  m;: 
  o) 
  ■} 
  

  

  3145 
  

  

  :34i5 
  

  

  2 
  

  

  49 
  

  

  27 
  

  

  49 
  

  

  22^ 
  

  

  <jb 
  :: 
  o)-^ 
  

  

  3145 
  

  

  : 
  4135 
  

  

  2 
  

  

  15 
  

  

  52 
  

  

  16 
  

  

  0^ 
  

  

  A-.h-:-' 
  

  

  2131 
  

  

  : 
  3121 
  

  

  3 
  

  

  35 
  

  

  38 
  

  

  35 
  

  

  36 
  

  

  PIP 
  i' 
  

  

  I34I 
  

  

  : 
  1431 
  

  

  5 
  

  

  27 
  

  

  4i 
  

  

  26 
  

  

  44^ 
  

  

  P: 
  :P 
  ■:'- 
  

  

  134I 
  

  

  :43^i 
  

  

  6 
  

  

  87 
  

  

  7 
  

  

  87 
  

  

  50^ 
  

  

  b: 
  :b 
  : 
  ■ 
  

  

  3584 
  

  

  :3854 
  

  

  I 
  

  

  37 
  

  

  27 
  

  

  37 
  

  

  28 
  

  

  b: 
  :b 
  : 
  ^■ 
  

  

  3584 
  

  

  :8^4 
  

  

  I 
  

  

  64 
  

  

  56 
  

  

  64 
  

  

  43 
  

  

  xi-.x 
  :' 
  

  

  4.16.20.3 
  

  

  -.4.20.16.3 
  

  

  5 
  

  

  21 
  

  

  30 
  

  

  21 
  

  

  30 
  

  

  x::x 
  ■:■'' 
  

  

  4. 
  16.20.3 
  

  

  : 
  20.16.4.3 
  

  

  5 
  

  

  96 
  

  

  20 
  

  

  96 
  

  

  26^ 
  

  

  VI 
  

  

  x: 
  :x 
  : 
  

  

  4. 
  16.20.3 
  

  

  : 
  16.4.20.3 
  

  

  I 
  

  

  42 
  

  

  26 
  

  

  42 
  

  

  27 
  

  

  <7': 
  x: 
  

  

  1780 
  

  

  : 
  4. 
  16.20.3 
  

  

  7 
  

  

  10 
  

  

  15 
  

  

  10 
  

  

  21 
  

  

  x; 
  :pi 
  

  

  4.16.20.3 
  

  

  : 
  1341 
  

  

  8 
  

  

  7 
  . 
  

  

  32^ 
  

  

  6 
  

  

  57 
  

  

  x: 
  : 
  to: 
  

  

  4.16.20.3 
  

  

  :3i45 
  

  

  4 
  

  

  53 
  

  

  12 
  

  

  53 
  

  

  5 
  

  

  ? 
  : 
  ? 
  

  

  21.49.70.32 
  

  

  : 
  21.70.49-32 
  

  

  6 
  

  

  74 
  

  

  7 
  

  

  74 
  

  

  25 
  

  

  ? 
  : 
  ? 
  

  

  21.49-70.32 
  

  

  : 
  70.49-21.32 
  

  

  7 
  

  

  30 
  

  

  10 
  

  

  30 
  

  

  3 
  

  

  ? 
  : 
  ? 
  

  

  21.49.70.32 
  

  

  : 
  49.21.70.32 
  

  

  7 
  

  

  60 
  

  

  34 
  

  

  60 
  

  

  28 
  

  

  