﻿362 
  J. 
  Barrell 
  — 
  Piedmont 
  Terraces. 
  

  

  inland 
  less 
  far 
  than 
  a 
  previons 
  submergence. 
  The 
  less 
  

   enduring 
  of 
  these 
  submergent 
  phases 
  may 
  have 
  served, 
  

   therefore, 
  to 
  partially 
  destroy 
  an 
  older 
  marine 
  peneplane 
  

   without 
  developing 
  a 
  clear 
  one 
  of 
  its 
  own 
  marked 
  by 
  a 
  

   marginal 
  cliff. 
  So 
  far, 
  at 
  least, 
  as 
  the 
  Pleistocene 
  is 
  con- 
  

   cerned 
  it 
  appears, 
  also, 
  that 
  fluvial 
  denudation 
  during 
  

   intervening 
  emergent 
  phases 
  was 
  vastly 
  more 
  important 
  

   in 
  the 
  bulk 
  of 
  its 
  work 
  than 
  was 
  marine 
  denudation 
  

   during 
  the 
  submergent 
  phases. 
  Consequently, 
  if 
  we 
  

   look 
  beyond 
  the 
  Pleistocene 
  into 
  the 
  Tertiary 
  it 
  is 
  to 
  be 
  

   anticipated 
  that 
  the 
  marks 
  of 
  the 
  sea, 
  if 
  present, 
  should 
  

   become 
  more 
  and 
  more 
  obscure 
  from 
  the 
  destructive 
  

   effects 
  due 
  to 
  all 
  later 
  fluvial 
  denudation. 
  

  

  [To 
  be 
  continued] 
  

  

  