﻿Il6 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  cement 
  co., 
  and 
  here 
  a 
  stratum 
  nearly 
  6 
  feet 
  thick 
  is 
  quarried 
  and 
  

   converted 
  into 
  cement. 
  As 
  the 
  quarries 
  are 
  opened 
  south 
  of 
  the 
  

   second 
  escarpment 
  (inface 
  of 
  the 
  Onondaga 
  cuesta^), 
  the 
  surface 
  

   rock 
  of 
  Onondaga 
  hmestone 
  and 
  the 
  Manhus 
  hmestone 
  have 
  to 
  be 
  

   stripped 
  off 
  before 
  the 
  cement 
  rock 
  is 
  reached. 
  

  

  The 
  characters 
  of 
  the 
  several 
  strata 
  have 
  been 
  briefly 
  enumerated 
  

   in 
  the 
  section 
  derived 
  from 
  the 
  gas 
  well 
  core. 
  The 
  upper 
  beds, 
  

   which 
  are 
  alone 
  accessible 
  in 
  this 
  region, 
  may 
  generally 
  be 
  seen 
  in 
  

   the 
  escarpment, 
  specially 
  where 
  it 
  is 
  crossed 
  by 
  streams, 
  as 
  at 
  Will- 
  

   iamsville, 
  or 
  where 
  quarries 
  have 
  been 
  opened. 
  The 
  rock 
  is 
  fine 
  

   grained, 
  often 
  showing 
  a 
  marked 
  banding 
  or 
  lamination, 
  and 
  breaks 
  

   with 
  a 
  conchoidal 
  fracture, 
  producing 
  rounded 
  surfaces. 
  

  

  In 
  this 
  rock 
  we 
  find 
  entombed 
  the 
  remains 
  of 
  those 
  remarkable 
  

   Crustacea, 
  the 
  Eurypterids, 
  whose 
  bizarre 
  form, 
  remotely 
  fish-like, 
  

   has 
  excited 
  more 
  interest 
  than 
  any 
  other 
  fossil 
  found 
  in 
  this 
  region. 
  

   These 
  Crustacea 
  have 
  made 
  the 
  Waterlime 
  of 
  Buffalo 
  famous, 
  and 
  

   the 
  Buffalo 
  society 
  of 
  natural 
  sciences, 
  whose 
  collections 
  embrace 
  a 
  

   magnificent 
  series 
  of 
  these 
  fossils, 
  has 
  fittingly 
  adopted 
  it 
  as 
  chief 
  

   among 
  its 
  insignia. 
  

  

  Besides 
  these 
  Crustacea 
  several 
  other 
  organisms 
  have 
  been 
  found 
  

   in 
  the 
  Waterlime 
  strata 
  of 
  north 
  Buffalo. 
  Among 
  these 
  are 
  a 
  num- 
  

   ber 
  of 
  undescribed 
  brachiopods, 
  including 
  at 
  least 
  one 
  species 
  of 
  

   L 
  i 
  n 
  g 
  u 
  1 
  a 
  . 
  

  

  Manlius 
  limestone 
  

  

  The 
  waterlime 
  of 
  north 
  Buffalo 
  is 
  succeeded 
  by 
  a 
  stratum 
  of 
  im- 
  

   pure 
  limestone 
  from 
  7 
  to 
  8 
  feet 
  in 
  thickness 
  and 
  known 
  locally 
  by 
  

   the 
  name 
  of 
  " 
  bullhead 
  " 
  rock. 
  The 
  line 
  of 
  demarkation 
  between 
  the 
  

   two 
  formations 
  is 
  not 
  a 
  very 
  pronounced 
  one, 
  for 
  the 
  inferior 
  rock 
  

   grades 
  upward 
  into 
  the 
  superior 
  one. 
  The 
  rock 
  is 
  a 
  dolomitic 
  lime- 
  

   stone 
  of 
  a 
  very 
  compact 
  semicrystalline 
  character, 
  with 
  a 
  high 
  per- 
  

   cent 
  of 
  argillaceous 
  material, 
  and 
  not 
  infrequently 
  a 
  strong 
  petrol- 
  

   eum 
  odor. 
  It 
  is 
  mottled, 
  having 
  frequently 
  the 
  appearance 
  of 
  a 
  

   limestone 
  breccia, 
  and 
  consists 
  of 
  purplish 
  gray, 
  angular 
  or 
  rec- 
  

   tangular 
  pieces 
  and 
  similar 
  light 
  colored 
  and 
  more 
  yellowish 
  ones. 
  

   The 
  latter 
  appear 
  to 
  be 
  more 
  argillaceous 
  than 
  the 
  former. 
  There 
  

  

  ^See 
  chapter 
  i. 
  

  

  