﻿60 
  THEOBALD 
  : 
  GEOLOGY 
  OF 
  PEGU. 
  

  

  any 
  mere 
  verbal 
  description 
  of 
  the 
  present 
  extent 
  of 
  the 
  group 
  in 
  Pegu 
  ; 
  

   it 
  is 
  sufficient, 
  therefore, 
  to 
  say 
  that 
  West 
  of 
  the 
  Irrawadi 
  these 
  beds 
  are 
  

   represented 
  by 
  what 
  may 
  be 
  termed 
  a 
  mere 
  remnant 
  in 
  process 
  of 
  re- 
  

   moval. 
  South-west 
  of 
  Thaiet-mio 
  these 
  beds 
  occur 
  along 
  a 
  low 
  range 
  of 
  

   hills 
  and 
  hilly 
  ground, 
  mainly 
  made 
  up 
  of 
  the 
  debris 
  of 
  the 
  group, 
  but 
  

   wherein 
  here 
  and 
  there 
  portions 
  of 
  its 
  uppermost 
  bed 
  still 
  remain, 
  marked 
  

   by 
  the 
  presence 
  of 
  large 
  logs 
  of 
  silicified 
  wood, 
  but 
  greatly 
  wasted 
  by 
  

   denudation 
  and 
  masked 
  by 
  surface 
  debris. 
  From 
  the 
  sandy, 
  incoherent 
  

   nature 
  of 
  the 
  uppermost 
  bed 
  containing 
  the 
  fossil- 
  wood, 
  it 
  is 
  often 
  not 
  

  

  r 
  

  

  easy 
  to 
  decide 
  if 
  in 
  any 
  particular 
  spot 
  the 
  bed 
  is 
  really 
  undisturbed, 
  or 
  

   formed 
  of 
  the 
  materials 
  re-arranged 
  ; 
  but 
  along 
  the 
  low 
  line 
  of 
  hills 
  

   stretching 
  in 
  a 
  North-north-west 
  direction, 
  from 
  between 
  a 
  little 
  West 
  of 
  

   Thaietmio 
  to 
  the 
  Pani 
  stream, 
  the 
  uppermost 
  bed 
  of 
  the 
  fossil-wood 
  group 
  

   stretches 
  for 
  a 
  distance 
  of 
  about 
  eight 
  miles, 
  though 
  much 
  masked 
  

   here 
  and 
  there 
  by 
  detritus, 
  resulting 
  from 
  the 
  waste 
  ever 
  present 
  in 
  so 
  inco- 
  

   herent 
  a 
  bed. 
  Three 
  miles 
  North-west 
  of 
  Thaiet-mio 
  occurs 
  another 
  small 
  

   patch 
  of 
  this 
  sandy 
  upper 
  bed 
  not 
  more 
  than 
  a 
  mile 
  in 
  length, 
  and 
  these 
  

   are 
  the 
  only 
  remnants 
  now 
  left 
  of 
  this 
  upper 
  fossil- 
  wood 
  bed 
  West 
  of 
  

   the 
  Irrawadi. 
  From 
  these 
  two 
  patches, 
  or 
  rather 
  from 
  the 
  now 
  denuded 
  

   extension 
  of 
  the 
  bed 
  of 
  which 
  the 
  above 
  patches 
  are 
  the 
  sole 
  remnants, 
  all 
  

   the 
  fossil-wood 
  which 
  forms 
  so 
  conspicuous 
  an 
  ingredient 
  of 
  the 
  gravels 
  

   near 
  Thaiet-mio 
  and 
  Prome 
  was 
  derived 
  ; 
  and 
  there 
  is 
  little 
  doubt 
  that 
  

   the 
  beds 
  of 
  this 
  group 
  extended 
  the 
  whole 
  length 
  of 
  the 
  Arakan 
  hills 
  

   (that 
  is, 
  along 
  their 
  Eastern 
  flank), 
  though 
  evidence, 
  in 
  the 
  shape 
  of 
  

   scattered 
  fragments 
  of 
  fossil-wood, 
  does 
  not 
  occur 
  much 
  below 
  Lati- 
  

   tude 
  17°. 
  I 
  do 
  not 
  rely 
  on 
  the 
  occurrence 
  occasionally 
  of 
  a 
  scattered 
  

   piece 
  of 
  fossil-wood 
  of 
  small 
  size, 
  as 
  establishing 
  therefore 
  the 
  exten- 
  

   sion 
  of 
  the 
  fossil-wood 
  beds, 
  wherever 
  such 
  fragments 
  are 
  discovered 
  ; 
  

   since 
  small 
  pieces 
  of 
  this 
  fossil-wood 
  are 
  carried 
  about 
  by 
  the 
  Burmese 
  for 
  

   the 
  purpose 
  of 
  procuring 
  fire 
  with 
  a 
  steel. 
  My 
  estimate 
  of 
  the 
  former 
  

   extension 
  of 
  the 
  beds 
  in 
  question 
  rests 
  on 
  more 
  general 
  grounds, 
  such 
  

   as 
  the 
  character 
  of 
  the 
  ground, 
  the 
  extent 
  of 
  the 
  gravels, 
  which 
  pro- 
  

   ( 
  MS 
  ) 
  

  

  