﻿CLASSIFICATION, 
  ETC. 
  OF 
  HAMILTON 
  AND 
  CHEMUNG 
  SERIES 
  81 
  

  

  Darton 
  in 
  1893 
  referred 
  them 
  to 
  the 
  Hamilton 
  stating 
  " 
  The 
  

   basal 
  beds 
  [of 
  the 
  Oneonta] 
  are 
  gray 
  flags 
  which 
  merge 
  into 
  the 
  

   Hamilton."** 
  

  

  And 
  again 
  that 
  " 
  The 
  Chemung 
  rocks 
  to 
  which 
  Mather 
  and 
  

   others 
  refer, 
  lie 
  below 
  the 
  Oneonta 
  beds 
  or 
  about 
  1000 
  feet 
  below 
  

   the 
  actual 
  base 
  of 
  the 
  Chemung 
  horizon, 
  and 
  are 
  Hamilton 
  in 
  

   position. 
  Their 
  fauna 
  is 
  meager 
  and 
  consists 
  of 
  species 
  supposed 
  

   by 
  Vanuxem 
  to 
  be 
  ' 
  Chemung 
  ' 
  [Ithaca] 
  in 
  central 
  New 
  York, 
  

   but 
  now 
  known 
  to 
  be 
  Hamilton." 
  6 
  

  

  The 
  same 
  year, 
  1893, 
  Prosser 
  published 
  a 
  paper 
  describing 
  sev- 
  

   eral 
  characteristic 
  sections 
  of 
  the 
  upper 
  Hamilton, 
  Sherburne, 
  and 
  

   Ithaca 
  formations 
  in 
  eastern 
  New 
  York 
  accompanied 
  by 
  lists 
  of 
  

   fossils. 
  One 
  of 
  these 
  localities 
  was 
  the 
  Anthony 
  White 
  quarry 
  

   west 
  of 
  Oneonta 
  from 
  which 
  a 
  list 
  of 
  20 
  species 
  with 
  their 
  geologic 
  

   range 
  was 
  given. 
  The 
  paper 
  concluded 
  as 
  follows:. 
  "It 
  seems 
  

   clear 
  to 
  the 
  writer 
  that 
  the 
  above 
  lists 
  of 
  fossils 
  with 
  the 
  state- 
  

   ment 
  of 
  their 
  stratigraphio 
  position 
  show 
  that 
  the 
  fossiliferous 
  

   zone 
  underlying 
  the 
  Oneonta 
  sandstone 
  in 
  Chenango 
  and 
  Otsego 
  

   counties 
  is 
  not 
  the 
  top 
  of 
  the 
  Hamilton 
  but 
  belongs 
  in 
  the 
  Portage 
  

   stage." 
  d 
  By 
  the 
  use 
  of 
  the 
  word 
  stage 
  in 
  the 
  preceding 
  sentence 
  the 
  

   writer 
  intended 
  to 
  convey 
  the 
  idea 
  that 
  in 
  his 
  opinion 
  this 
  fossil- 
  

   iferous 
  zone 
  was 
  synchronous 
  with 
  some 
  part 
  of 
  the 
  formation 
  

   which 
  on 
  the 
  Genesee 
  river 
  is 
  called 
  the 
  Portage; 
  or 
  along 
  the 
  

   meridian 
  of 
  Cayuga 
  lake 
  is 
  called 
  the 
  Lower 
  Portage, 
  Ithaca 
  and 
  

   Upper 
  Portage 
  but 
  did 
  not 
  say 
  with 
  which 
  part 
  of 
  that 
  formation 
  

   it 
  was 
  to 
  be 
  correlated. 
  

  

  On 
  the 
  Geologic 
  map 
  of 
  New 
  York, 
  1894, 
  the 
  rocks 
  along 
  the 
  

   Susquehanna 
  river 
  valley 
  above, 
  and 
  for 
  some 
  distance 
  below 
  

   Oneonta 
  are 
  referred 
  to 
  the 
  upper 
  part 
  of 
  the 
  Hamilton 
  for- 
  

   mation. 
  

  

  XXIII 
  F 
  2 
  . 
  East 
  of 
  the 
  Powell 
  hill 
  section, 
  flowing 
  from 
  the 
  

   north 
  through 
  the 
  central 
  part 
  of 
  Oneonta 
  is 
  a 
  stream 
  known 
  as 
  

  

  a 
  Am. 
  jour, 
  science, 
  3d 
  ser., 
  March, 
  1893, 
  45:206. 
  

  

  b 
  Ibid, 
  p. 
  207. 
  Also 
  see 
  Sec. 
  B 
  of 
  fig. 
  2 
  on 
  p. 
  205. 
  where 
  the 
  Oneonta 
  sandstone 
  Is 
  represented 
  

   diagrammatically 
  as 
  resting 
  on 
  the 
  Hamilton 
  formation 
  at 
  Oneonta. 
  

   clbid, 
  Sep., 
  46: 
  226-29. 
  

   dlbirt, 
  p. 
  230. 
  

  

  