﻿of 
  the 
  Northern 
  Appalachians. 
  231 
  

  

  tinue 
  the 
  drafting 
  of 
  the 
  manuscript 
  until 
  he 
  went 
  into 
  

   the 
  field. 
  The 
  completion 
  of 
  the 
  manuscript, 
  to 
  the 
  mis- 
  

   fortune 
  of 
  all, 
  was 
  cut 
  short 
  by 
  Professor 
  Barrell's 
  un- 
  

   timely 
  death 
  in 
  May. 
  

  

  I 
  have 
  compared 
  this 
  manuscript 
  with 
  the 
  outline 
  notes 
  

   on 
  which 
  he 
  based 
  his 
  talks 
  in 
  1912 
  and 
  find 
  that 
  so 
  far 
  

   as 
  it 
  goes 
  it 
  covers 
  much 
  the 
  same 
  ground 
  but 
  in 
  a 
  more 
  

   systematic 
  manner. 
  In 
  addition 
  there 
  are 
  outlines 
  of 
  

   several 
  important 
  topics 
  on 
  marine 
  denudation 
  — 
  its 
  com- 
  

   petency, 
  the 
  way 
  it 
  works, 
  and 
  a 
  discussion 
  of 
  typical 
  

   cases. 
  From 
  other 
  notes 
  it 
  appears 
  that 
  the 
  important 
  

   topics 
  which 
  remained 
  to 
  be 
  written 
  embraced 
  the 
  

   detailed 
  discussion 
  of 
  (a) 
  the 
  terraces 
  of 
  western 
  Con- 
  

   necticut 
  and 
  Massachusetts 
  [note 
  — 
  "terraces 
  marine 
  in 
  

   Connecticut, 
  subaerial 
  in 
  Massachusetts"] 
  ; 
  (b) 
  the 
  ter- 
  

   races 
  of 
  eastern 
  Connecticut 
  and 
  Massachusetts 
  [note 
  — 
  

   "some 
  terraces 
  dropped 
  out 
  on 
  east; 
  more 
  subaerial 
  

   erosion, 
  softer 
  beds"] 
  ; 
  (c) 
  marine 
  and 
  subaerial 
  phases 
  

   of 
  erosion 
  in 
  New 
  England, 
  [In 
  part, 
  presumably 
  a 
  

   summary 
  of 
  the 
  two 
  preceding 
  sections] 
  ; 
  (d) 
  History 
  

   [note 
  — 
  "Pliocene 
  age 
  of 
  Piedmont 
  terraces"]. 
  In 
  view 
  

   of 
  Professor 
  Barrell's 
  plans 
  for 
  further 
  field 
  work 
  it 
  is 
  

   to 
  be 
  presumed 
  that 
  these 
  topics 
  would 
  not 
  have 
  been 
  

   written 
  nor 
  the 
  manuscript 
  put 
  in 
  final 
  form 
  for 
  some 
  

   time 
  to 
  come. 
  

  

  Many 
  of 
  the 
  topics 
  in 
  the 
  manuscript 
  are 
  plainly 
  unfin- 
  

   ished 
  — 
  are 
  in 
  effect 
  more 
  or 
  less 
  brief 
  outlines 
  of 
  what 
  

   Professor 
  Barrell 
  intended 
  to 
  do 
  or 
  for 
  guidance 
  when 
  

   he 
  took 
  up 
  the 
  final 
  drafting 
  of 
  the 
  paper. 
  In 
  this 
  re- 
  

   spect 
  it 
  must 
  remain 
  as 
  it 
  was 
  written. 
  Some 
  minor 
  

   changes 
  in 
  subject 
  matter 
  have 
  been 
  made 
  where 
  they 
  

   were 
  obviously 
  called 
  for, 
  and 
  some 
  explanatory 
  para- 
  

   graphs 
  have 
  been 
  added 
  by 
  the 
  editor 
  where 
  it 
  seemed 
  

   they 
  might 
  be 
  helpful, 
  but 
  the 
  great 
  majority 
  of 
  changes 
  

   have 
  fallen 
  under 
  the 
  general 
  head 
  of 
  style. 
  In 
  this 
  

   phase 
  of 
  the 
  work 
  the 
  editor 
  has 
  tried 
  to 
  follow 
  Profes- 
  

   sor 
  Barrell's 
  own 
  habit 
  of 
  thorough 
  and 
  painstaking 
  

   revision. 
  It 
  seems 
  proper 
  to 
  suggest 
  that 
  the 
  reader 
  

   should 
  keep 
  in 
  mind 
  the 
  unfinished 
  condition 
  of 
  the 
  manu- 
  

   script 
  on 
  which 
  this 
  printed 
  article 
  is 
  based. 
  

  

  It 
  will 
  presumably 
  assist 
  the 
  reader 
  to 
  better 
  under- 
  

   stand 
  the 
  manuscript 
  and 
  the 
  various 
  figures 
  if 
  the 
  main 
  

   points 
  of 
  Professor 
  Barrell's 
  interpretation 
  of 
  the 
  prob- 
  

   lem 
  are 
  given 
  here, 
  especially 
  as 
  he 
  had 
  not 
  reached 
  the 
  

  

  