﻿FOSSIL-WOOD 
  GROUP. 
  75 
  

  

  Choung, 
  and 
  higher 
  up 
  the 
  stream 
  still 
  nearer 
  the 
  Yomah, 
  that 
  is, 
  within 
  

   three 
  or 
  four 
  miles 
  of 
  it, 
  large 
  pieces 
  of 
  fossil- 
  wood 
  are 
  seen, 
  showing 
  that 
  

   much 
  of 
  this 
  ground 
  was 
  overspread 
  by 
  the 
  incoherent 
  fossil- 
  wood 
  beds, 
  

   though 
  now, 
  next 
  to 
  wholly 
  removed 
  by 
  denudation. 
  

  

  Throughout 
  this 
  area, 
  the 
  rocks 
  are 
  not 
  well 
  seen, 
  being 
  masked 
  by 
  

   detritus 
  and 
  overspread 
  with 
  dense 
  tree 
  forest. 
  The 
  dips 
  are 
  rather 
  more 
  

   irregular 
  than 
  is 
  usually 
  the 
  case 
  with 
  the 
  older 
  groups, 
  and 
  from 
  the 
  

   nature 
  of 
  these 
  upper 
  sands, 
  it 
  is 
  far 
  from 
  easy 
  to 
  say 
  whether 
  or 
  not 
  any 
  

   material 
  unconformity 
  exists 
  between 
  them 
  and 
  the 
  often 
  highly 
  inclined 
  

   beds 
  whereon 
  they 
  rest 
  ; 
  from 
  analogy, 
  I 
  am, 
  however, 
  inclined 
  to 
  think 
  

   that 
  there 
  is 
  little 
  unconformity 
  between 
  them, 
  as 
  in 
  the 
  western 
  side 
  

   of 
  the 
  range, 
  these 
  uppermost 
  beds 
  have 
  participated 
  in 
  the 
  movements 
  

   which 
  have 
  affected 
  those 
  beneath 
  them, 
  and 
  to 
  which 
  the 
  general 
  

   disintegration 
  of 
  this 
  incoherent 
  group 
  may 
  be 
  largely 
  due. 
  The 
  area 
  

   in 
  Tonghoo 
  mainly 
  occupied 
  by 
  these 
  beds 
  may 
  be 
  roughly 
  estimated 
  as 
  

   not 
  far 
  short 
  of 
  700 
  square 
  miles, 
  of 
  which 
  eighty 
  miles 
  is 
  composed 
  

   of 
  outliers 
  East 
  of 
  the 
  Sittoung, 
  flanking 
  the 
  Poungloung 
  range. 
  

  

  I 
  have 
  already 
  mentioned 
  the 
  great 
  similarity 
  which 
  exists 
  between 
  

   a 
  tract 
  of 
  country 
  composed 
  of 
  the 
  lower 
  or 
  more 
  argillaceous 
  beds 
  of 
  this 
  

   group, 
  and 
  an 
  ordinary 
  alluvial 
  plain; 
  and 
  this 
  similarity 
  may 
  be 
  well 
  

   seen 
  between 
  the 
  Kaboung 
  and 
  the 
  frontier 
  ; 
  and 
  were 
  our 
  observation 
  to 
  

   be 
  restricted, 
  it 
  would 
  often 
  be 
  impossible 
  to 
  decide 
  to 
  which 
  group 
  

   the 
  beds 
  composing 
  the 
  surface 
  of 
  the 
  country 
  belonged 
  ; 
  but 
  in 
  all 
  such 
  

   cases, 
  we 
  have 
  only 
  to 
  extend 
  our 
  examination, 
  and 
  we 
  sooner 
  or 
  later 
  

   come 
  to 
  the 
  boundary 
  of 
  the 
  alluvium 
  if 
  moving 
  towards 
  the 
  East, 
  or 
  if 
  

   in 
  the 
  opposite 
  direction, 
  we 
  soon 
  find 
  the 
  seeming 
  alluvium 
  or 
  clayey 
  

   champaign 
  country 
  to 
  give 
  place 
  insensibly 
  to 
  the 
  low 
  outlying 
  hills 
  of 
  

   the 
  Yomah, 
  composed 
  of 
  the 
  same 
  materials. 
  This 
  may 
  be 
  seen 
  through- 
  

   out 
  the 
  whole 
  country 
  lying 
  North 
  and 
  South 
  of 
  the 
  village 
  of 
  Amot-kyee- 
  

   kon 
  on 
  the 
  Hswah 
  Choung, 
  where 
  it 
  debouches 
  from 
  the 
  hills 
  ; 
  and 
  we 
  

   may 
  here 
  traverse 
  miles 
  of 
  perfectly 
  level 
  tree 
  forest 
  seemingly 
  alluvial, 
  

  

  ( 
  263 
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