﻿110 
  THEOBALD: 
  GEOLOGY 
  OF 
  PEGU. 
  

  

  whether 
  the 
  Pagoda 
  ridge, 
  or 
  the 
  Westerly 
  ridge 
  above-named, 
  is 
  also 
  

   brought 
  up 
  in 
  the 
  same 
  manner 
  as 
  the 
  Lime-hill, 
  or 
  is 
  merely 
  elevated 
  

   to 
  a 
  greater 
  degree 
  than 
  the 
  other 
  newer 
  Tertiary 
  strata 
  by 
  the 
  up- 
  

   heaval 
  of 
  Ton-doung, 
  but 
  without 
  any 
  through-faulting. 
  I 
  am 
  much 
  

   inclined 
  to 
  think 
  that 
  they 
  are 
  faulted, 
  but 
  there 
  is 
  hardly 
  sufficient 
  

   evidence 
  to 
  sustain 
  the 
  case. 
  It 
  is 
  not, 
  indeed, 
  certain 
  whether 
  the 
  

   rocks 
  constituting 
  the 
  Westerly 
  hill 
  of 
  Tou-doung, 
  or 
  the 
  Pagoda 
  hill 
  

   on 
  the 
  East 
  of 
  it, 
  belong 
  to 
  the 
  Nummulitic 
  or 
  to 
  the 
  newer 
  Tertiaries. 
  

   A 
  fair 
  display 
  of 
  sandstone 
  and 
  shale 
  is 
  seen 
  on 
  the 
  road 
  section, 
  in 
  the 
  

   valley 
  separating 
  Ton-doung 
  proper 
  from 
  the 
  Westerly 
  hill 
  opposite 
  it 
  ; 
  

   and 
  a 
  similar 
  display 
  of 
  beds 
  is 
  seen 
  on 
  the 
  ascent 
  to 
  the 
  small 
  Pagoda 
  

   to 
  the 
  Eastward 
  ; 
  but 
  there 
  is 
  nothing 
  to 
  clearly 
  indicate 
  the 
  age 
  of 
  the 
  

   rocks. 
  With 
  this 
  problem 
  in 
  view, 
  I 
  was 
  inclined 
  to 
  consider, 
  when 
  on 
  

   the 
  ground, 
  the 
  rocks 
  in 
  question 
  to 
  belong 
  to 
  the 
  Nummulitic 
  series, 
  

   and 
  the 
  hills 
  in 
  question 
  therefore 
  brought 
  up 
  by 
  faults, 
  as 
  the 
  Ton- 
  

   douno" 
  hill 
  itself. 
  This 
  I 
  judged 
  from 
  the 
  somewhat 
  abrupt 
  rise 
  of 
  the 
  

   ridges 
  in 
  question, 
  and 
  their 
  apparent 
  connexion 
  rather 
  with 
  the 
  Ton- 
  

   doung 
  mass, 
  than 
  the 
  newer 
  beds 
  through 
  which 
  Ton-doung 
  had 
  been 
  

   forced 
  up 
  ; 
  but 
  I 
  do 
  not 
  hold 
  the 
  view 
  with 
  any 
  confidence, 
  or 
  regard 
  

   it 
  as 
  supported 
  by 
  any 
  evidence 
  of 
  a 
  reliable 
  sort. 
  Exclusive, 
  however, 
  

   of 
  the 
  Pagoda 
  ridge 
  and 
  the 
  Westerly 
  extremity 
  of 
  Ton-doung, 
  the 
  

   age 
  of 
  which 
  is 
  open 
  to 
  question, 
  the 
  whole 
  country 
  round 
  consists 
  of 
  

   beds 
  of 
  the 
  Prome 
  group, 
  or 
  of 
  the 
  more 
  recent 
  fossil-wood 
  group, 
  the 
  

   former 
  of 
  which 
  contain 
  numerous 
  fossils, 
  though 
  not 
  usually 
  very 
  well 
  

   preserved. 
  

  

  IX. 
  — 
  Negrais 
  Rocks. 
  

  

  The 
  term 
  ' 
  Negrais' 
  was 
  originally 
  applied 
  by 
  me 
  some 
  years 
  ago 
  

   to 
  a 
  series 
  of 
  beds 
  stretching 
  Northward 
  from 
  Cape 
  Negrais 
  along 
  the 
  

   Arakan 
  range 
  and 
  coast, 
  and 
  was 
  then 
  regarded 
  by 
  me 
  as 
  probably 
  

   embracing 
  the 
  lowest 
  beds 
  of 
  the 
  Nummulitic 
  group. 
  No 
  fossil 
  evidence 
  

  

  ( 
  m 
  ) 
  

  

  