﻿r^8 
  NEW 
  YOEK 
  STATE 
  MUSEUJSt 
  

  

  retreat 
  of 
  the 
  ice 
  as 
  marked 
  by 
  its 
  terminal 
  moraine 
  in 
  the 
  

   divide 
  region, 
  indicates 
  that 
  the 
  blending 
  or 
  uniting 
  of 
  the 
  waters 
  

   marking 
  the 
  ancestral 
  stages 
  in 
  the 
  southern 
  parts 
  of 
  the 
  present 
  

   lake 
  valleys, 
  did 
  not 
  unite 
  all 
  at 
  once, 
  but 
  coalesced 
  rather 
  gradually. 
  

   The 
  beginning 
  of 
  the 
  stage 
  was 
  marked 
  by 
  the 
  coalescing 
  of 
  the 
  

   waters 
  of 
  glacial 
  lakes 
  Ithaca 
  and 
  Watkins 
  when 
  the 
  ice 
  had 
  retreated 
  

   as 
  far 
  north 
  as 
  the 
  town 
  of 
  Ovid, 
  where 
  were 
  left 
  markings 
  of 
  the 
  

   waters 
  in 
  the 
  form 
  of 
  shore 
  deposits, 
  such 
  as 
  stratified 
  sand, 
  gravel, 
  

   etc. 
  

  

  Ovid 
  deposits. 
  On 
  the 
  north 
  side 
  of 
  the 
  east 
  and 
  west 
  road 
  

   leading 
  to 
  Willard's 
  depot 
  in 
  the 
  Seneca 
  basin, 
  and 
  opposite 
  the 
  

   Ovid 
  cemetery, 
  are 
  found 
  several 
  cuts 
  revealing 
  finely 
  stratified 
  

   coarse 
  sand 
  and 
  gravel 
  capped 
  by 
  some 
  18 
  to 
  36 
  inches 
  of 
  till. 
  The 
  

   cuts 
  are 
  approximately 
  six 
  to 
  seven 
  feet 
  in 
  depth 
  but 
  do 
  not 
  penetrate 
  

   through 
  the 
  stratified 
  material. 
  No 
  streams 
  are 
  to 
  be 
  found 
  in 
  the 
  

   region 
  at 
  present, 
  nor 
  wei'e 
  any 
  present 
  during 
  preglacial 
  times, 
  or 
  

   else 
  every 
  trace 
  of 
  them 
  has 
  been 
  obliterated, 
  hence, 
  delta 
  deposits 
  

   must 
  be 
  precluded 
  as 
  the 
  source 
  of 
  origin 
  of 
  the 
  materials. 
  The 
  

   deposits, 
  however, 
  seem 
  to 
  point 
  rather 
  strongly 
  to 
  the 
  following 
  con- 
  

   ditions 
  under 
  which 
  they 
  were 
  laid 
  down. 
  'No 
  doubt 
  can 
  be 
  enter- 
  

   tained 
  as 
  to 
  the 
  materials 
  being 
  the 
  result 
  of 
  water 
  action. 
  The 
  ice 
  

   had 
  withdrawn 
  northward 
  sufficiently 
  to 
  uncover 
  the 
  land 
  and 
  allow 
  a 
  

   falling 
  of 
  the 
  waters 
  of 
  lake 
  Ithaca 
  to 
  the 
  level 
  of 
  and 
  coalescing 
  

   with 
  those 
  of 
  lake 
  Watkins. 
  The 
  space 
  occupied 
  by 
  the 
  lake 
  waters, 
  

   between 
  the 
  land 
  on 
  the 
  south 
  and 
  the 
  ice 
  front 
  on 
  the 
  north, 
  was 
  

   probably 
  not 
  very 
  wide 
  at 
  this 
  point. 
  In 
  this 
  water 
  space 
  the 
  stratified 
  

   deposits 
  were 
  assorted 
  and 
  laid 
  down, 
  derived 
  in 
  greater 
  part 
  per- 
  

   haps 
  from 
  the 
  ice, 
  when 
  the 
  latter 
  readvanced 
  a 
  short 
  distance 
  and 
  

   covered 
  the 
  deposits 
  with 
  the 
  depth 
  of 
  till 
  found 
  capping 
  the 
  water 
  

   laid 
  material. 
  In 
  other 
  words 
  the 
  ice 
  front, 
  at 
  this 
  point, 
  was 
  not 
  

   withdrawing 
  uniformly 
  and 
  progressively 
  northward; 
  neither 
  was 
  

   it 
  occupied 
  in 
  any 
  permanent 
  or 
  protracted 
  halt, 
  but 
  was 
  oscillating 
  

   back 
  and 
  forth. 
  The 
  elevation 
  of 
  the 
  deposits 
  by 
  aneroid 
  measure- 
  

   ment 
  is 
  953 
  feet 
  above 
  sea 
  level. 
  

  

  The 
  till 
  found 
  capping 
  the 
  assorted 
  material 
  becomes 
  thinner 
  to 
  

   the 
  north 
  and 
  grows 
  thicker 
  southward, 
  when 
  it 
  finally 
  merges 
  into 
  

   the 
  slight 
  morainal 
  deposits 
  about 
  one 
  mile 
  south 
  of 
  the 
  town. 
  

  

  