﻿Brigham 
  — 
  Drift 
  Bowlders 
  in 
  Central 
  New 
  York. 
  213 
  

  

  Aet. 
  XX. 
  — 
  Drift 
  Bowlders 
  between 
  the 
  MohaioJc 
  and 
  

   Susquehanna 
  Rivers; 
  by 
  Albert 
  P. 
  Brigham. 
  

  

  The 
  district 
  traversed 
  in 
  my 
  investigations 
  extends 
  from 
  

   Utica 
  on 
  the 
  Mohawk 
  River, 
  south-south-westward 
  to 
  the 
  con- 
  

   fluence 
  of 
  the 
  Chenango 
  and 
  Susquehanna 
  Rivers 
  at 
  Bingham- 
  

   ton, 
  a 
  distance 
  of 
  95 
  miles. 
  It 
  is 
  approximately 
  the 
  line 
  of 
  the 
  

   Oriskany 
  and 
  Chenango 
  valleys 
  ; 
  or 
  of 
  the 
  New 
  York, 
  Ontario 
  

   and 
  "Western 
  Railway 
  from 
  TJtica 
  to 
  Oxford 
  and 
  the 
  Delaware, 
  

   Lackawanna 
  and 
  Western 
  Railway 
  from 
  Utica 
  to 
  Binghamton. 
  

   The 
  main 
  valleys, 
  valley 
  slopes 
  and 
  summits 
  of 
  the 
  hill 
  ranges 
  

   were 
  seen 
  continuously 
  for 
  the 
  first 
  40 
  miles 
  from 
  the 
  Mohawk, 
  

   and 
  over 
  a 
  breadth 
  of 
  from 
  10 
  to 
  20 
  miles. 
  Farther 
  south 
  a 
  

   series 
  of 
  points 
  was 
  selected, 
  with 
  observations 
  at 
  all 
  altitudes. 
  

  

  Topography. 
  — 
  The 
  district 
  belongs 
  to 
  the 
  plateau 
  region 
  of 
  

   central 
  and 
  southern 
  New 
  York, 
  dropping 
  down 
  to 
  the 
  level 
  of 
  

   the 
  Mohawk 
  valley 
  on 
  the 
  north. 
  The 
  Mohawk-Susquehanna 
  

   divide 
  averages 
  20 
  miles 
  distance 
  from 
  the 
  Mohawk 
  River. 
  

   From 
  this 
  divide 
  extend 
  northward 
  and 
  southward 
  the 
  valleys 
  

   and 
  hill 
  ranges 
  which 
  are 
  characteristic 
  of 
  central 
  and 
  western 
  

   New 
  York. 
  The 
  northern 
  slope 
  is 
  drained 
  by 
  the 
  Sauquoit, 
  

   Oriskany, 
  and 
  Oneida 
  Creeks 
  ; 
  the 
  southern 
  slope 
  carries 
  the 
  

   Chenango, 
  Unadilla 
  and 
  Susquehanna 
  Rivers. 
  The 
  divides 
  in 
  

   the 
  region 
  considered 
  are 
  : 
  Cassville, 
  altitude 
  1215 
  feet 
  ; 
  Water- 
  

   ville, 
  1238 
  feet 
  ; 
  Bouckvilie, 
  1147 
  feet 
  ; 
  Pratts, 
  altitude 
  not 
  

   known, 
  but 
  somewhat 
  greater 
  than 
  that 
  of 
  Bouckvilie. 
  At 
  

   Rome 
  we 
  have 
  445 
  feet 
  and 
  at 
  Utica, 
  410 
  feet. 
  South 
  of 
  the 
  

   divide 
  the 
  record 
  is: 
  Hamilton, 
  1111 
  feet; 
  Norwich, 
  1001 
  

   feet; 
  Binghamton, 
  D. 
  and 
  L. 
  and 
  W. 
  R. 
  R., 
  846 
  feet; 
  Bing- 
  

   hamton, 
  Susquehanna 
  River 
  814 
  feet. 
  The 
  hills 
  rise 
  from 
  500 
  

   to 
  TOO 
  feet 
  above 
  the 
  adjacent 
  valleys, 
  culminating 
  in 
  Tassel 
  

   Hill, 
  Paris, 
  Oneida 
  County, 
  1948 
  feet. 
  Comparing 
  the 
  rail- 
  

   way 
  levels 
  at 
  Utica, 
  and 
  Binghamton 
  with 
  the 
  summit 
  at 
  

   Bouckvilie, 
  it 
  will 
  be 
  seen 
  that 
  we 
  descend 
  northward 
  737 
  feet 
  

   in 
  24 
  miles, 
  and 
  southward 
  301 
  feet 
  in 
  71 
  miles, 
  making 
  the 
  

   average 
  northern 
  slope 
  of 
  the 
  valley 
  bottoms 
  30*71 
  feet 
  per 
  

   mile 
  ; 
  average 
  southern 
  slope 
  4*24 
  feet 
  per 
  mile. 
  The 
  distances 
  

   are 
  taken 
  from 
  the 
  railroads. 
  Air 
  line 
  measurement 
  would 
  

   slightly 
  change 
  the 
  figures. 
  From 
  a 
  limited 
  number 
  of 
  aneroid 
  

   determinations 
  it 
  is 
  thought 
  that 
  the 
  altitude 
  of 
  the 
  hill 
  ranges 
  

   is 
  even 
  more 
  sustained 
  going 
  southward, 
  than 
  that 
  of 
  the 
  

   valley 
  bottoms. 
  The 
  writer 
  hopes 
  to 
  discuss 
  the 
  meaning 
  of 
  

   these 
  facts 
  in 
  a 
  later 
  paper 
  on 
  the 
  topographic 
  history 
  of 
  

   the 
  Chenango 
  Valley 
  region. 
  Four 
  sections 
  of 
  the 
  moraine 
  

   described 
  by 
  Professor 
  Chamberlin,* 
  lie 
  within 
  the 
  field 
  of 
  this 
  

  

  * 
  Terminal 
  Moraine, 
  etc., 
  3d 
  Ann. 
  Rep. 
  U. 
  S. 
  G. 
  S., 
  p. 
  360. 
  

  

  