﻿SUGGESTIONS 
  FOR 
  STUDY 
  

   Geologic 
  Text-Books 
  and 
  Books 
  of 
  Reference 
  

  

  Geology 
  is 
  not, 
  like 
  history, 
  a 
  suibject 
  which 
  can 
  be 
  learned 
  

   wholly 
  from 
  books. 
  Not; 
  even 
  an 
  elementary 
  knowledge 
  of 
  it 
  can 
  

   be 
  readily 
  obtained 
  without 
  careful 
  field 
  study 
  of 
  some 
  promi- 
  

   nent 
  district. 
  The 
  student 
  must, 
  however, 
  use 
  'books 
  to 
  supply 
  

   him 
  with 
  imformation 
  as 
  to 
  the 
  work 
  of 
  others 
  who 
  have 
  gone 
  

   before, 
  while 
  his 
  powers 
  of 
  observation 
  and 
  inference 
  are 
  being 
  

   trained 
  on 
  geologic 
  phenomena. 
  

  

  When 
  taking 
  up 
  the 
  field 
  study 
  of 
  a 
  new 
  district, 
  it 
  is 
  import- 
  

   ant 
  to 
  ascertain 
  what 
  is 
  already 
  known 
  concerning 
  it. 
  An 
  

   attempt 
  is 
  made, 
  therefore, 
  to 
  direct 
  attention 
  to 
  the 
  principal 
  

   publications 
  on 
  New 
  York 
  geology. 
  

  

  The 
  four 
  geologic 
  reports 
  of 
  Hall, 
  Mather, 
  Emmons 
  and 
  Van- 
  

   uxem 
  on 
  the 
  districts 
  assigned 
  to 
  them 
  in 
  the 
  original 
  survey 
  

   of 
  the 
  state 
  which 
  was 
  begun 
  in 
  1837 
  and 
  concluded 
  in 
  1841, 
  are 
  

   now 
  out 
  of 
  print, 
  but 
  are 
  found 
  in 
  most 
  of 
  the 
  public 
  libraries 
  of 
  

   New 
  York, 
  and 
  can 
  be 
  purchased 
  of 
  the 
  dealers 
  in 
  old 
  books 
  in 
  

   the 
  larger 
  cities. 
  They 
  contain 
  an 
  immense 
  amount 
  of 
  valuable 
  

   detail 
  and 
  should 
  be 
  consulted 
  by 
  all 
  persons 
  interested 
  in 
  New 
  

   York 
  geology. 
  The 
  report 
  on 
  the 
  fourth 
  district 
  by 
  James 
  Hall, 
  

   is 
  as 
  valuable 
  to-day 
  as 
  when 
  it 
  was 
  written 
  and 
  comparatively 
  

   little 
  has 
  been 
  added 
  by 
  later 
  investigators 
  in 
  the 
  region 
  des- 
  

   cribed, 
  except 
  in 
  regard 
  to 
  quaternary 
  and 
  economic 
  geology. 
  

  

  In 
  addition 
  to 
  these 
  four 
  quarto 
  volumes 
  on 
  the 
  geology 
  of 
  

   New 
  York, 
  there 
  have 
  been 
  many 
  papers 
  published 
  in 
  the 
  annual 
  

   reports 
  of 
  the 
  New 
  York 
  State 
  Museum 
  and 
  the 
  State 
  

   Geologist 
  of 
  New 
  York. 
  A 
  multitude 
  of 
  papers 
  have 
  also' 
  been 
  

   published 
  by 
  persons 
  not 
  officially 
  connected 
  with 
  the 
  State 
  

  

  