﻿194 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  The 
  elevations 
  in 
  the 
  above 
  section, 
  although 
  obtained 
  by- 
  

   means 
  of 
  a 
  barometer, 
  are 
  considered 
  fairly 
  accurate 
  for 
  geo- 
  

   logical 
  purposes, 
  since 
  on 
  comparing 
  the 
  elevation 
  of 
  a 
  certain 
  

   horizon 
  of 
  this 
  section 
  above 
  sea 
  level 
  with 
  that 
  of 
  Summit 
  hill 
  

   whose 
  altitude 
  was 
  determined 
  by 
  the 
  New 
  York 
  survey 
  under 
  

   Gardiner 
  it 
  was 
  found 
  that 
  the 
  estimated 
  altitude 
  of 
  the 
  section 
  

   was 
  only 
  70 
  feet 
  too 
  great. 
  In 
  estimating 
  the 
  altitude 
  of 
  the 
  

   section 
  above 
  sea 
  level 
  Guyot's 
  elevations 
  of 
  the 
  Schoharie 
  val- 
  

   ley 
  were 
  used 
  which 
  were 
  obtained 
  by 
  means 
  of 
  a 
  mercurial 
  

   barometer; 
  while 
  from 
  the 
  mouth 
  of 
  Panther 
  creek 
  to 
  the 
  top 
  

   of 
  the 
  hill 
  east 
  of 
  Summit, 
  the 
  measurement 
  was 
  made 
  by 
  means 
  

   of 
  an 
  aneroid. 
  

  

  On 
  comparing 
  the 
  altitude 
  of 
  the 
  fossils 
  found 
  at 
  XXVIII 
  C 
  8 
  — 
  

   which 
  are 
  thought 
  to 
  come 
  from 
  about 
  the 
  top 
  of 
  the 
  Hamilton, 
  

   with 
  that 
  of 
  the 
  highest 
  Hamilton 
  zone 
  in 
  the 
  Summit 
  hill 
  section 
  

   it 
  is 
  found 
  that 
  the 
  Summit 
  fossils 
  are 
  300 
  feet 
  higher, 
  or 
  370 
  

   feet 
  if 
  the 
  correction 
  mentioned 
  above 
  be 
  made. 
  The 
  distance 
  

   between 
  the 
  two 
  localities 
  is 
  two 
  miles 
  which 
  gives 
  a 
  dip 
  of 
  

   from 
  150 
  to 
  185 
  feet 
  a 
  mile 
  to 
  the 
  southeast. 
  If 
  the 
  above 
  

   calculation 
  be 
  correct 
  and 
  this 
  strong 
  southeasterly 
  dip 
  con- 
  

   tinues 
  to 
  the 
  Schoharie 
  river, 
  then 
  the 
  thickness 
  of 
  the 
  rocks 
  

   in 
  any 
  section 
  continuing 
  westerly 
  for 
  several 
  miles 
  based 
  upon 
  

   the 
  altitude 
  would 
  be 
  too 
  great. 
  This 
  is 
  probably 
  the 
  case 
  for 
  

   the 
  one 
  just 
  described 
  up 
  the 
  Panther 
  creek 
  from 
  West 
  Fulton 
  

   and 
  the 
  altitudes 
  of 
  the 
  section 
  are 
  greater 
  than 
  the 
  thickness 
  

   of 
  the 
  rocks 
  represented 
  in 
  it. 
  

  

  Blenheim 
  

  

  Blenheim 
  township 
  lies 
  to 
  the 
  south 
  of 
  Fulton 
  and 
  to 
  the 
  

   east 
  of 
  Summit 
  and 
  Jefferson. 
  Its 
  eastern 
  part 
  is 
  crossed 
  by 
  

   the 
  Schoharie 
  river 
  bordered 
  on 
  the 
  east 
  by 
  a 
  very 
  steep 
  hill 
  

   which 
  in 
  places 
  has 
  almost 
  perpendicular 
  walls 
  several 
  hun- 
  

   dred 
  feet 
  in 
  hight. 
  The 
  central 
  part 
  of 
  the 
  township 
  is 
  crossed 
  

   from 
  the 
  west 
  toward 
  the 
  east 
  by 
  two 
  streams 
  known 
  as 
  the 
  

   Westkill 
  and 
  Mill 
  creek 
  which 
  unite 
  near 
  North 
  Blenheim 
  and 
  

  

  •a 
  Am. 
  jour, 
  science, 
  3d 
  ser., 
  19:449. 
  

  

  