﻿Yol. 
  53.] 
  THE 
  SUMMIT 
  OF 
  THE 
  EURKA 
  PASS. 
  - 
  21 
  

  

  Dr. 
  J. 
  W. 
  Gregory 
  thought 
  that 
  Prof. 
  Bormey's 
  maintenance 
  of 
  

   his 
  former 
  conclusion 
  after 
  a 
  third 
  study 
  of 
  the 
  relations 
  of 
  the 
  

   saccharoidal 
  and 
  the 
  Jurassic 
  limestones 
  would 
  lessen 
  the 
  value 
  

   attached 
  to 
  the 
  difficulties 
  of 
  his 
  theory. 
  Neither 
  explanation 
  

   is 
  free 
  from 
  difficulty, 
  but 
  the 
  constant 
  differences 
  now 
  found 
  

   between 
  the 
  two 
  rocks 
  greatly 
  increase 
  the 
  probabilities 
  in 
  favour 
  

   of 
  the 
  fault-theory. 
  

  

  The 
  Author 
  said 
  that 
  he 
  quite 
  agreed 
  with 
  Dr. 
  Gregory 
  that 
  we 
  

   had 
  a 
  dilemma 
  before 
  us. 
  We 
  must 
  either 
  assume 
  very 
  peculiar 
  

   faulting 
  or 
  very 
  sporadic 
  and 
  inexplicable 
  metamorphism 
  — 
  seeing 
  

   that 
  the 
  marble 
  was 
  totally 
  different 
  from 
  the 
  adjacent 
  Jurassic 
  

   rocks, 
  was 
  exactly 
  like 
  the 
  marbles 
  elsewhere 
  members 
  of 
  the 
  

   crystalline 
  schists, 
  and 
  evidently 
  had 
  been 
  affected 
  by 
  pressure 
  after 
  

   it 
  had 
  become 
  a 
  marble, 
  while 
  the 
  other 
  was 
  simply 
  a 
  limestone 
  

   affected 
  by 
  pressure. 
  Hence 
  he 
  thought 
  that 
  the 
  hypothesis 
  of 
  

   faults 
  offered 
  the 
  fewer 
  difficulties. 
  

  

  