﻿636 
  Forty-seventh: 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  Ann. 
  Eep. 
  1ST. 
  Y. 
  State 
  Mus. 
  Nat. 
  Hist., 
  133-140.) 
  Mr. 
  Hall's 
  

   classification 
  is 
  as 
  follows 
  : 
  

  

  I. 
  Lower 
  Laurentian 
  Magnetic 
  Iron 
  Ore 
  Series. 
  

   II. 
  Laurentian 
  Sulphur 
  Ore 
  Series. 
  

  

  III. 
  The 
  Crystalline 
  Limestones. 
  

  

  IY. 
  The 
  Labrador 
  Series 
  or 
  Upper 
  Laurentian 
  with 
  Titanif 
  erous 
  

   Ores. 
  

  

  The 
  relations 
  of 
  II 
  and 
  III 
  are 
  said 
  to 
  be 
  uncertain, 
  but 
  later 
  

   in 
  a 
  note, 
  III 
  is 
  said 
  to 
  be 
  later 
  than 
  IY. 
  

  

  T. 
  S. 
  Hunt, 
  in 
  18*3, 
  described 
  the 
  crystalline 
  limestones 
  near 
  

   Port 
  Henry 
  as 
  a 
  great 
  calcareous 
  vein 
  in 
  highly 
  inclined 
  Lauren- 
  

   tian 
  gneisses, 
  'fragments 
  of 
  which 
  it 
  includes 
  (Canadian 
  Naturalist. 
  

   2nd 
  Series, 
  X, 
  420). 
  Many 
  others 
  have 
  written 
  of 
  the 
  petrography 
  

   or 
  of 
  minor 
  features, 
  and 
  their 
  papers 
  will 
  be 
  found 
  cited 
  in 
  the 
  

   bibliography 
  given 
  above, 
  but 
  as 
  they 
  do 
  not 
  relate 
  to 
  stratigraphy 
  

   they 
  are 
  not 
  mentioned 
  here. 
  Reference 
  must 
  be 
  made 
  also 
  to 
  the 
  

   admirable 
  work 
  of 
  Profs. 
  Brainerd 
  and 
  Seely 
  on 
  the 
  Chazy 
  and 
  

   Calciffrous, 
  less 
  noted 
  here 
  because 
  this 
  report 
  deals 
  more 
  

   especially 
  with 
  the 
  crystallines. 
  

  

  In 
  1890, 
  C. 
  D. 
  Walcott 
  accompanied 
  R. 
  Pumpelly 
  and 
  C. 
  R. 
  

   Yan 
  Hise 
  from 
  Fort 
  Ann 
  to 
  Westport 
  and 
  thence 
  westward 
  

   toward 
  and 
  to 
  Mt. 
  Marcy. 
  In 
  the 
  words 
  of 
  Yan 
  Hise 
  "the 
  

   peripheral 
  area 
  of 
  this 
  part 
  of 
  the 
  Adirondacks 
  was 
  found 
  to 
  be 
  a 
  

   great 
  series 
  of 
  laminated 
  rocks, 
  consisting 
  for 
  the 
  most 
  part 
  of 
  

   white 
  and 
  red 
  regularly 
  laminated 
  gneisses, 
  very 
  frequently 
  

   garnetif 
  erous, 
  and 
  in 
  lesser 
  quantity, 
  of 
  garnetiferous 
  quartz 
  schist, 
  

   crystalline 
  limestone, 
  graphitic 
  gneiss, 
  and 
  beds 
  of 
  magnetic 
  iron 
  

   ore, 
  dipping 
  as 
  a 
  whole 
  at 
  a 
  rather 
  flat 
  angle 
  toward 
  the 
  

   east 
  and 
  southeast. 
  The 
  garnetiferous 
  quartz 
  schists 
  were 
  found 
  

   in 
  rather 
  persistent 
  beds. 
  Below 
  the 
  crystalline 
  limestone 
  is 
  a 
  

   coarse, 
  black, 
  hornblendic 
  gneiss, 
  the 
  contacts 
  between 
  it 
  and 
  

   the 
  limestone 
  being 
  of 
  the 
  most 
  extraordinary 
  character. 
  The 
  

   plane 
  between 
  them 
  is 
  one 
  of 
  great 
  irregularity. 
  In 
  the 
  lime- 
  

   stone 
  are 
  contained' 
  numerous 
  fragments 
  and 
  even 
  great 
  boulders 
  

   of 
  the 
  gneiss, 
  and 
  also 
  for 
  a 
  distance 
  of 
  some 
  feet 
  away 
  from 
  the 
  

   contact 
  are 
  numerous 
  crystals 
  of 
  feldspar. 
  The 
  appearance 
  is 
  

   such 
  as 
  to 
  suggest 
  very 
  strongly 
  that 
  here 
  is 
  an 
  unconformable 
  

   contact, 
  the 
  limestone 
  being 
  deposited 
  along 
  an 
  encroaching 
  

   shore 
  line. 
  The 
  phenomena 
  are, 
  however, 
  probably 
  due 
  to 
  the 
  

  

  