﻿Western 
  Pen 
  n 
  sylvan 
  ia. 
  

  

  201 
  

  

  fluvial 
  planes 
  as 
  late 
  as 
  the 
  early 
  glacial 
  period. 
  His 
  observa- 
  

   tions 
  together 
  with 
  the 
  earlier 
  ones 
  of 
  Dr. 
  H. 
  M. 
  Chance 
  of 
  

   the 
  Pennsylvania 
  Geological 
  Survey, 
  are 
  to 
  the 
  effect 
  that 
  

  

  Explanation 
  of 
  Map. 
  — 
  The 
  shaded 
  portions 
  represent 
  moraines. 
  Their 
  map- 
  

   ping 
  is 
  complete 
  only 
  between 
  the 
  Cuyahoga 
  river 
  and 
  Lake 
  Chautauqua. 
  Striae 
  

   are 
  represented 
  by 
  arrows 
  and 
  indicate 
  the 
  general 
  divergence 
  from 
  the 
  axes 
  of 
  

   the 
  lobes. 
  The 
  numbers 
  indicate 
  villages 
  and 
  cities 
  as 
  follows 
  : 
  (1) 
  Lottsville. 
  

   Penn. 
  ; 
  (2) 
  Titusville. 
  Penn. 
  : 
  (3) 
  Meadville. 
  Penn. 
  ; 
  (4) 
  Erie. 
  Penn. 
  ; 
  (5) 
  Ashta- 
  

   bula, 
  0.; 
  (6) 
  Painesville. 
  0.; 
  (7) 
  AkroD, 
  : 
  (8) 
  Canton. 
  0.; 
  (9) 
  Braceville, 
  0.; 
  

   (10) 
  Leavittsburg. 
  0.; 
  (11) 
  Niles, 
  0.; 
  (12) 
  Toungstown, 
  0.; 
  (13) 
  Lowehville, 
  0.; 
  

   (14) 
  Edenburg, 
  Penn.; 
  (15) 
  Newcastle, 
  Pa.; 
  (16) 
  Greenville, 
  Pa., 
  (17) 
  Raymilton. 
  

   Penn.: 
  (18) 
  Oil 
  City, 
  Penn. 
  ; 
  (19) 
  Beaver, 
  Penn. 
  

  

  fluvial 
  material 
  containing 
  crystalline 
  erratics 
  of 
  Canadian 
  

   derivation 
  occurs 
  along 
  the 
  Allegheny 
  river 
  on 
  this 
  terrace. 
  

   This 
  determination 
  is 
  of 
  great 
  importance 
  since 
  it 
  brings 
  all 
  

  

  