﻿Palache 
  and 
  Graham 
  — 
  Crystallization 
  of 
  Willemite. 
  641 
  

  

  ings 
  do 
  not 
  exaggerate 
  the 
  regularity 
  of 
  development 
  of 
  the 
  

   most 
  perfect 
  crystals. 
  

  

  The 
  combinations 
  presented 
  by 
  the 
  measured 
  crystals 
  with 
  

   the 
  number 
  of 
  faces 
  of 
  each 
  form 
  observed 
  are 
  contained 
  in 
  

   Table 
  I. 
  The 
  last 
  crystal 
  alone 
  was 
  doubly 
  terminated. 
  

  

  Fig. 
  4 
  

  

  Table 
  I. 
  

  

  Crystal 
  

  

  a 
  

  

  m 
  

  

  r 
  

  

  n 
  

  

  u 
  

  

  s 
  

  

  

  

  k 
  

  

  03 
  

  

  y 
  

  

  3 
  

  

  t 
  

  

  d 
  

  

  D 
  

  

  9 
  

  

  6 
  

  

  6 
  

  

  3 
  

  

  3 
  

  

  1 
  

  

  i 
  

  

  

  3 
  

  

  3 
  

  

  3 
  

  

  _ 
  

  

  _ 
  

  

  2 
  

  

  3 
  

  

  3 
  

  

  6 
  

  

  6 
  

  

  2 
  

  

  3 
  

  

  — 
  

  

  

  ] 
  

  

  3 
  

  

  3 
  

  

  3 
  

  

  1 
  

  

  — 
  

  

  2 
  

  

  2 
  

  

  3 
  

  

  6 
  

  

  6 
  

  

  2 
  

  

  1 
  

  

  1 
  

  

  — 
  

  

  1 
  

  

  2 
  

  

  3 
  

  

  3 
  

  

  — 
  

  

  — 
  

  

  1 
  

  

  1 
  

  

  — 
  

  

  6 
  

  

  6 
  

  

  2 
  

  

  2 
  

  

  — 
  

  

  — 
  

  

  — 
  

  

  2 
  

  

  3 
  

  

  3 
  

  

  2 
  

  

  1 
  

  

  2 
  

  

  3 
  

  

  — 
  

  

  X 
  

  

  X 
  

  

  X 
  

  

  X 
  

  

  — 
  

  

  — 
  

  

  X 
  

  

  X 
  

  

  X 
  

  

  X 
  

  

  — 
  

  

  — 
  

  

  — 
  

  

  — 
  

  

  X 
  

  

  6 
  

  

  6 
  

  

  5 
  

  

  1 
  

  

  2 
  

  

  2 
  

  

  2 
  

  

  3 
  

  

  3 
  

  

  5 
  

  

  — 
  

  

  — 
  

  

  2 
  

  

  2 
  

  

  2 
  

  

  Am. 
  Jour. 
  Sci.— 
  Fourth 
  Series, 
  Vol. 
  XXXVI, 
  No. 
  216.— 
  December, 
  1913. 
  

   43 
  

  

  