﻿129 
  

   CLASS 
  VI. 
  

  

  E 
  AK 
  T 
  HT 
  MINERAL 
  

   ORDER 
  I. 
  SILICA. 
  

  

  (Mineralogy 
  of 
  New- 
  York, 
  page 
  257.) 
  

   To 
  the 
  full 
  account 
  which 
  is 
  contained 
  in 
  the 
  Mineralogy 
  of 
  New- 
  

   York, 
  of 
  our 
  remarkable 
  localities 
  of 
  quartz, 
  T 
  have 
  still 
  to 
  make 
  several 
  

   additions. 
  Herkimer 
  county 
  has 
  furnished 
  such 
  an 
  almost 
  countless 
  

   number 
  of 
  specimens, 
  which 
  have 
  been 
  distributed 
  among 
  the 
  various 
  

   cabinets, 
  that 
  it 
  is 
  by 
  no 
  means 
  strange 
  that 
  new 
  and 
  interesting 
  crys- 
  

   talline 
  forms 
  are 
  from 
  time 
  to 
  time 
  discovered. 
  The 
  figure 
  annexed 
  is 
  

  

  from 
  Middleville, 
  and 
  is 
  copied 
  from 
  Mr. 
  Alger's 
  edition 
  of 
  Phillips' 
  

   Mineralogy, 
  (page 
  6.) 
  It 
  is 
  similar 
  to 
  the 
  fig. 
  133, 
  in 
  the 
  Mineralogy 
  

   of 
  New-York, 
  which 
  is 
  from 
  a 
  crystal 
  found 
  in 
  Greene 
  county. 
  

  

  Subsequent 
  examination 
  of 
  the 
  crystalline 
  forms 
  from 
  this 
  county, 
  

   has 
  led 
  me 
  to 
  doubt 
  whether 
  fig. 
  152, 
  of 
  the 
  Mineralogy 
  of 
  New- 
  York, 
  

   and 
  fig. 
  9 
  c, 
  (page 
  409) 
  of 
  Dana's 
  Mineralogy, 
  2d 
  edition, 
  are 
  really 
  

   true 
  modifications 
  of 
  this 
  mineral. 
  The 
  first 
  was 
  copied 
  from 
  Shepard's 
  

  

  Mineralogy. 
  The 
  faces 
  o 
  and 
  a, 
  as 
  represented 
  in 
  these 
  figures, 
  seem 
  

   to 
  be 
  accidental, 
  and 
  to 
  have 
  been 
  formed 
  by 
  the 
  pressure 
  of 
  some 
  por- 
  

   [Nat. 
  Hist.] 
  9 
  

  

  