﻿Report 
  of 
  the 
  State 
  Geologist. 
  629 
  

  

  basic 
  gneiss, 
  far 
  away 
  from 
  any 
  massive 
  rock, 
  and 
  containing 
  

   these 
  minerals, 
  a 
  reasonable 
  doubt 
  may 
  arise 
  as 
  to 
  whether 
  it 
  is 
  

   a 
  member 
  of 
  the 
  older 
  gneiss 
  series 
  or 
  a 
  later 
  dorian 
  intrusion. 
  

   These 
  difficulties 
  are 
  later 
  brought 
  out 
  with 
  examples. 
  The 
  

   study 
  of 
  the 
  rocks 
  has 
  been 
  carried 
  out 
  with 
  microscopic 
  deter- 
  

   minations 
  in 
  the 
  laboratory, 
  and 
  some 
  hundreds 
  of 
  thin 
  sections 
  

   have 
  been 
  prepared. 
  

  

  It 
  should 
  be 
  further 
  stated 
  that 
  in 
  the 
  summer 
  of 
  1892 
  the 
  

   writer 
  mapped 
  Moriah 
  and 
  Westport 
  townships 
  under 
  other 
  

   auspices, 
  and 
  has 
  already 
  submitted 
  a 
  map 
  and 
  report 
  upon 
  them, 
  

   which 
  are 
  uniform 
  in 
  scale 
  and 
  character 
  with 
  the 
  accompanying. 
  

   A 
  sketch 
  of 
  the 
  petrography 
  of 
  the 
  " 
  Gabbros 
  along 
  the 
  west 
  

   shore 
  of 
  Lake 
  Cham 
  plain" 
  was 
  presented 
  to 
  the 
  Geological 
  

   Society 
  of 
  America 
  in 
  December, 
  1893. 
  

  

  The 
  following 
  pages 
  give 
  a 
  preliminary 
  general 
  sketch, 
  after 
  

   which 
  the 
  individual 
  towns 
  are 
  taken 
  up 
  with 
  the 
  accompanying 
  

   maps. 
  

  

  LITERATURE 
  ON 
  THE 
  GEOLOGY 
  AND 
  MINERALOGY 
  OF 
  THE 
  AdIRON- 
  

  

  DACKS. 
  

  

  F. 
  D. 
  Adams. 
  ITeber 
  das 
  Norian 
  oder 
  Ober-Laurentian 
  von 
  Canada. 
  

  

  Neues 
  Jahrbuch, 
  Beilage 
  Band 
  VIII, 
  419, 
  1893. 
  Refers 
  briefly 
  

  

  to 
  the 
  Adirondacks. 
  

   L. 
  C. 
  Beck. 
  Report 
  on 
  the 
  Mineralogy 
  of 
  New 
  York, 
  1842. 
  

   W. 
  P. 
  Blake. 
  Contributions 
  to 
  the 
  early 
  history 
  of 
  the 
  Industry 
  of 
  

  

  Phosphate 
  of 
  Lime 
  in 
  the 
  U. 
  S. 
  Trans. 
  Amer. 
  Inst. 
  Min. 
  Eng., 
  

  

  Baltimore 
  meeting, 
  1892. 
  

  

  W. 
  P. 
  Blake. 
  Mentions 
  blood 
  red 
  mica 
  from 
  Moriah. 
  Amer. 
  Jour. 
  

  

  Sci., 
  h, 
  XII, 
  6, 
  1851. 
  

   Ezra 
  Brainerd 
  and 
  H. 
  M. 
  Seeley. 
  The 
  Calciferous 
  Formation 
  in 
  

  

  the 
  Champlain 
  Valley. 
  Bull. 
  Amer. 
  Mus. 
  Nat. 
  Hist., 
  Ill, 
  1, 
  1890; 
  

  

  Bull. 
  Geol. 
  Soc. 
  of 
  Amer., 
  I, 
  501, 
  1890. 
  

  

  Ezra 
  Br 
  ai 
  nerd. 
  The 
  Chazy 
  Formation 
  in 
  the 
  Champlain 
  Valley. 
  

   Bull. 
  Geol. 
  Soc. 
  Amer., 
  II, 
  293, 
  1891. 
  

  

  N. 
  L. 
  Brittox. 
  On 
  a 
  Schistose 
  Series 
  of 
  Crystalline 
  Rocks 
  in 
  the 
  

   Adirondacks. 
  Trans. 
  N. 
  Y. 
  Acad. 
  Sci., 
  V, 
  72. 
  Remarks 
  by 
  A. 
  

   A. 
  Julien 
  on 
  same, 
  do., 
  73. 
  

  

  E. 
  S. 
  Dana. 
  On 
  a 
  Crystal 
  of 
  Allanite 
  from 
  Port 
  Henry, 
  N. 
  Y. 
  Amer. 
  

   Jour. 
  Sci., 
  June, 
  1884, 
  p. 
  479. 
  

  

  