﻿I04 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  €nds 
  the 
  upper 
  Clinton 
  limestone 
  is 
  only 
  a 
  few 
  feet 
  above 
  the 
  road- 
  

   bed, 
  and 
  the 
  shale 
  above 
  it 
  is 
  accessible. 
  29 
  to 
  30 
  feet 
  above 
  the 
  top 
  

   of 
  the 
  limestone, 
  a 
  group 
  of 
  calcareous 
  beds 
  rich 
  in 
  bryozoa 
  project 
  

   from 
  the 
  bank, 
  being 
  readily 
  traceable 
  for 
  some 
  distance 
  on 
  account 
  

   of 
  their 
  compact 
  nature. 
  Their 
  total 
  thickness 
  is 
  about 
  4 
  feet, 
  

   and 
  they 
  consist 
  of 
  numerous 
  thin 
  limestone 
  layers 
  with 
  shale 
  part- 
  

   ings 
  of 
  greater 
  or 
  less 
  thickness. 
  On 
  the 
  weathered 
  surfaces 
  of 
  the 
  

   limestone 
  layers, 
  the 
  bryozoans 
  stand 
  out 
  in 
  relief, 
  and 
  such 
  surfaces 
  

   will 
  often 
  be 
  found 
  completely 
  covered 
  with 
  these 
  delicate 
  organ- 
  

   isms. 
  The 
  cylindric 
  types 
  prevail, 
  but 
  the 
  frondose 
  forms 
  are 
  also 
  

   common. 
  With 
  them 
  occur 
  brachiopods 
  and 
  other 
  organisms. 
  

   Slabs 
  of 
  this 
  rock 
  are 
  often 
  found 
  on 
  the 
  talus 
  slopes, 
  and 
  they 
  are 
  

   among 
  the 
  most 
  attractive 
  objects 
  that 
  meet 
  the 
  collector's 
  eye. 
  

   The 
  section 
  begins 
  again, 
  after 
  an 
  interruption 
  of 
  perhaps 
  a 
  quarter 
  

   of 
  a 
  mile, 
  near 
  the 
  old 
  quarry 
  in 
  the 
  Clinton 
  limestone. 
  (Plate 
  15) 
  

   Between 
  the 
  river 
  and 
  the 
  railroad 
  are 
  several 
  mounds 
  of 
  shale, 
  

   which 
  were 
  left 
  in 
  place 
  when 
  the 
  railroad 
  cut 
  was 
  made. 
  These 
  are 
  

   subject 
  to 
  disintegration, 
  and 
  the 
  fossils 
  in 
  consequence 
  weather 
  out. 
  

   They 
  may 
  be 
  picked 
  up 
  on 
  these 
  mounds 
  completely 
  weathered 
  out, 
  

   and 
  often 
  in 
  perfect 
  condition. 
  The 
  best 
  of 
  these 
  mounds 
  is 
  about 
  

   rlialfway 
  between 
  the 
  old 
  Clinton 
  limestone 
  quarry 
  and 
  the 
  fourth 
  

   watchman's 
  hut. 
  Here 
  the 
  top 
  of 
  the 
  mound 
  is 
  on 
  the 
  level 
  of 
  the 
  

   top 
  of 
  the 
  Bryozoa 
  beds, 
  the 
  whole 
  thickness 
  of 
  which 
  is 
  therefore 
  in- 
  

   cluded 
  in 
  this 
  remaining 
  mass. 
  As 
  these 
  beds 
  are 
  extremely 
  fossili- 
  

   ierous, 
  this 
  mound 
  is 
  a 
  productive 
  hunting 
  ground.^ 
  

  

  An 
  equally 
  productive 
  locality 
  for 
  weathered-out 
  fossils 
  is 
  the 
  

   slope 
  of 
  disintegrated 
  shale 
  rising 
  from 
  the 
  Rome, 
  Watertown 
  and 
  

   Ogdensburg 
  railroad 
  tracks 
  above 
  Lewiston 
  hights. 
  The 
  best 
  hunt- 
  

   ing 
  ground 
  is 
  in 
  the 
  little 
  gullies 
  made 
  by 
  the 
  rivulets 
  of 
  rain 
  water 
  

   in 
  the 
  bank. 
  Some 
  glacial 
  till 
  is 
  here 
  mingled 
  with 
  the 
  clay 
  from 
  

   the 
  decomposed 
  shales, 
  and 
  it 
  requires 
  a 
  little 
  attention 
  to 
  dis- 
  

   tinguish 
  the 
  two. 
  

  

  ^The 
  fossils 
  here 
  obtained 
  are 
  extremely 
  delicate 
  and 
  brittle. 
  They 
  

   should 
  be 
  placed 
  at 
  once 
  on 
  layers 
  of 
  cotton 
  batting, 
  in 
  a 
  small 
  box 
  and 
  

   covered 
  with 
  similar 
  material, 
  the 
  box 
  being 
  completely 
  filled. 
  This 
  is 
  the 
  

   only 
  way 
  in 
  which 
  many 
  of 
  these 
  delicate 
  fossils 
  can 
  be 
  carried 
  away 
  with- 
  

   out 
  breaking. 
  

  

  