﻿32 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  ported 
  by 
  the 
  individual 
  producers 
  was 
  valued 
  in 
  1906 
  at 
  $37,118,430, 
  

   the 
  valuation 
  being 
  based 
  on 
  the 
  crude 
  or 
  first 
  marketable 
  form 
  of 
  

   the 
  products. 
  The 
  corresponding 
  total 
  for 
  1905 
  was 
  $35,470,987 
  

   and 
  for 
  1904 
  it 
  was 
  $28,812,595. 
  The 
  varied 
  character 
  of 
  the 
  in- 
  

   dustries 
  is 
  shown 
  by 
  the 
  fact 
  that 
  there 
  are 
  some 
  35 
  different 
  ma- 
  

   terials 
  produced 
  in 
  commercial 
  quantities. 
  Among 
  the 
  more 
  notable 
  

   developments 
  recorded 
  in 
  the 
  last 
  report 
  are 
  those 
  relating 
  to 
  the 
  

   iron 
  ore, 
  gypsum 
  and 
  salt 
  industries, 
  all 
  of 
  which 
  have 
  possibilities 
  

   for 
  expansion 
  greatly 
  beyond 
  present 
  proportions. 
  

  

  These 
  mineral 
  statistics 
  are 
  gathered 
  and 
  tabulated 
  with 
  ultimate 
  

   care. 
  It 
  is 
  believed 
  that 
  they 
  present 
  the 
  most 
  accurate 
  analysis* 
  

   given 
  to 
  the 
  public 
  of 
  the 
  condition 
  of 
  mineral 
  production 
  in 
  this 
  

   State. 
  They 
  are 
  published 
  with 
  promptitude 
  and 
  as 
  early 
  as 
  pos- 
  

   sible 
  after 
  the 
  close 
  of 
  the 
  calendar 
  year. 
  

  

  Iron 
  ores. 
  The 
  description 
  of 
  the 
  iron 
  ore 
  resources 
  of 
  the 
  

   State 
  has 
  been 
  an 
  urgent 
  need 
  for 
  some 
  time. 
  The 
  previous 
  reports 
  

   of 
  Emmons, 
  Putnam 
  and 
  Smock 
  are 
  out 
  of 
  print 
  and 
  besides 
  are 
  

   wanting 
  in 
  many 
  particulars 
  to 
  make 
  them 
  representative 
  of 
  present 
  

   conditions 
  in 
  the 
  technical 
  and 
  scientific 
  branches 
  of 
  the 
  subject. 
  

   Field 
  work 
  preliminary 
  to 
  a 
  new 
  investigation^was 
  started 
  in 
  1905 
  

   by 
  the 
  Assistant 
  State 
  Geologist 
  and 
  has 
  been 
  continued 
  as 
  oppor- 
  

   tunity 
  offered 
  during 
  subsequent 
  seasons. 
  Owing 
  to 
  the 
  size 
  of 
  

   the 
  territory 
  that 
  has 
  to 
  be 
  covered 
  by 
  field 
  work 
  it 
  has 
  been 
  deemed 
  

   advisable 
  to 
  issue 
  a 
  separate 
  report 
  on 
  each 
  of 
  the 
  larger 
  districts, 
  

   whereby 
  an 
  earlier 
  publication 
  of 
  the 
  results 
  will 
  be 
  assured. 
  The 
  

   Adirondack 
  magnetites 
  will 
  be 
  described 
  in 
  the 
  first 
  report, 
  the 
  

   preparation 
  of 
  which 
  is 
  now 
  practically 
  completed. 
  In 
  this 
  part 
  of 
  

   the 
  work 
  the 
  cooperation 
  of 
  Prof. 
  J. 
  F. 
  Kemp 
  has 
  been 
  secured. 
  

   He 
  has 
  kindly 
  undertaken 
  to 
  prepare 
  a 
  description 
  of 
  the 
  Mine- 
  

   ville 
  district 
  which 
  he 
  has 
  recently 
  mapped 
  in 
  connection 
  with 
  the 
  

   survey 
  of 
  the 
  Adirondacks 
  now 
  being 
  carried 
  out 
  under 
  the 
  direc- 
  

   tion 
  of 
  the 
  State 
  Geologist. 
  

  

  The 
  investigation 
  of 
  the 
  Adirondack 
  magnetites 
  has 
  brought 
  out 
  

   much 
  that 
  is 
  new 
  concerning 
  their 
  geology. 
  The 
  important 
  prob- 
  

   lems 
  bearing 
  upon 
  the 
  character 
  of 
  the 
  rock 
  associates 
  and 
  origin 
  

   of 
  the 
  so 
  called 
  nontitaniferous 
  magnetites 
  have 
  been 
  studied 
  with 
  

   care, 
  and 
  while 
  they 
  are 
  extremely 
  puzzling, 
  it 
  is 
  believed 
  that 
  

   progress 
  has 
  been 
  made 
  in 
  their 
  elucidation. 
  The 
  walls 
  inclosing 
  

   this 
  class 
  of 
  ores 
  belong 
  to 
  the 
  feldspathic 
  gneiss 
  series 
  which 
  it 
  

   has 
  been 
  found 
  includes 
  both 
  igneous 
  and 
  sedimentary 
  derivatives. 
  

   There 
  may 
  be 
  distinguished, 
  thus, 
  two 
  main 
  varieties 
  under 
  which 
  

   all 
  of 
  the 
  occurrences 
  probably 
  are 
  included, 
  though 
  in 
  a 
  few 
  cases 
  

  

  