﻿PREFACE 
  111 
  

  

  ity 
  was 
  afforded 
  for 
  tliis. 
  The 
  photographs 
  of 
  Dr. 
  Heinrich 
  Ries 
  

   and 
  Prof. 
  I. 
  P. 
  Bishop 
  were 
  chiefly 
  made 
  for 
  the 
  New 
  York 
  State 
  

   Museum. 
  The 
  photographs 
  by 
  N. 
  H. 
  Darton 
  are 
  from 
  the 
  collec- 
  

   tion 
  of 
  the 
  Geological 
  Society 
  of 
  America, 
  and 
  printed 
  through 
  

   the 
  courtesy 
  of 
  the 
  United 
  States 
  Geological 
  Survey; 
  many 
  of 
  

   these 
  have 
  already 
  appeared 
  in 
  the 
  report 
  of 
  the 
  State 
  Geologist. 
  

   The 
  remainder 
  have 
  been 
  secured 
  from 
  various 
  sources. 
  

  

  For 
  many 
  of 
  the 
  general 
  statements 
  concerning 
  the 
  ages 
  and 
  

   systems 
  acknowledgment 
  is 
  made 
  to 
  the 
  writer's 
  late 
  friend 
  and 
  

   teacher 
  Dr. 
  John 
  S. 
  Newberry. 
  

  

  To 
  Prof. 
  James 
  Hall, 
  State 
  Geologist, 
  tlhe 
  writer 
  is 
  indebted 
  

   for 
  numerous 
  facts 
  and 
  conclusions 
  concerning 
  many 
  of 
  the 
  

   Palaeozoic 
  strata 
  of 
  New 
  York. 
  

  

  As 
  it 
  seemed 
  desirable 
  to 
  provide 
  a 
  pamphlet 
  which 
  could 
  be 
  

   distributed 
  at 
  cost 
  price 
  to 
  all 
  visitiors 
  to 
  the 
  museum 
  who 
  were 
  

   interested 
  in 
  the 
  study 
  of 
  the 
  collections, 
  the 
  bulletin 
  has 
  been 
  

   made 
  as 
  small 
  as 
  possible, 
  but 
  it 
  has 
  much 
  outgrown 
  the 
  dimen- 
  

   sions 
  originally 
  contemplated. 
  

  

  Since 
  the 
  geologic 
  collections 
  of 
  the 
  New 
  York 
  State 
  Museum 
  

   are 
  not 
  yet 
  in 
  a 
  state 
  of 
  final 
  arrangement, 
  no' 
  detailed 
  reference 
  

   is 
  made 
  in 
  this 
  bulletin 
  to 
  the 
  museum 
  cases, 
  but 
  the 
  system 
  of 
  

   labelling 
  adopted 
  is 
  such 
  as 
  to 
  make 
  it 
  an 
  easy 
  matter 
  to 
  refer 
  

   from 
  the 
  guide 
  to 
  the 
  museum 
  specimens. 
  

  

  It 
  is 
  hoped 
  that 
  this 
  bulletin 
  may, 
  in 
  its 
  f 
  unctlion 
  as 
  a 
  guide 
  and 
  

   -supplement 
  to 
  the 
  geologic 
  collections 
  of 
  the 
  State 
  Museum, 
  

   prove 
  a 
  useful 
  aid 
  to 
  beginners 
  in 
  geology. 
  It 
  aims, 
  through 
  its 
  

   text, 
  to 
  place 
  within 
  the 
  reach 
  of 
  those 
  interested, 
  a 
  brief 
  synop- 
  

   sis 
  of 
  the 
  geology 
  of 
  the 
  state, 
  and 
  by 
  its 
  illustrations 
  made 
  from 
  

   photographs, 
  to 
  show 
  the 
  exact 
  appearance 
  of 
  many 
  typical 
  

   exposures. 
  It 
  is 
  hoped 
  that 
  its 
  readers 
  will 
  receive 
  from 
  it 
  a 
  

   general 
  idea 
  of 
  the 
  New 
  York 
  formations 
  and 
  will 
  be 
  led 
  to 
  sup- 
  

   plement 
  by 
  detailed 
  study 
  of 
  local 
  geology 
  the 
  valuable 
  general 
  

   text-books 
  accessible 
  to 
  all. 
  

  

  I 
  

  

  