﻿NUMMULITIC 
  OR 
  EOCENE 
  GROUP. 
  93 
  

  

  line 
  of 
  hilly 
  country 
  the 
  boundary 
  of 
  the 
  Nummulitic 
  group 
  corresponds 
  

   with 
  certain 
  well 
  marked 
  physical 
  features 
  of 
  the 
  surface. 
  

  

  Opposite 
  Prome 
  is 
  a 
  fine 
  'range 
  of 
  hills, 
  backed 
  by 
  a 
  confused 
  mass 
  

   of 
  hilly 
  ground, 
  the 
  whole 
  gradually 
  sloping 
  down 
  into 
  the 
  plains 
  at 
  the 
  

   back 
  of 
  Padoung. 
  Proceeding 
  West 
  from 
  the 
  river, 
  at 
  almost 
  any 
  spot 
  

   between 
  Prome 
  and 
  the 
  frontier, 
  we 
  notice 
  along 
  a 
  certain 
  line, 
  a 
  change 
  

   in 
  the 
  physical 
  configuration 
  of 
  the 
  surface, 
  which 
  line 
  coincides 
  with 
  the 
  

   Eastern 
  boundary 
  of 
  the 
  Nummulitic 
  group, 
  and 
  although 
  it 
  may 
  not 
  be 
  

   of 
  such 
  a 
  character 
  to 
  arrest 
  the 
  eye 
  in 
  the 
  unfrequent 
  and 
  limited 
  

   coup 
  d'ceil 
  which 
  the 
  country 
  affords, 
  yet, 
  when 
  looked 
  for, 
  it 
  is 
  usually 
  

   found 
  to 
  be 
  present, 
  either 
  as 
  a 
  distinct 
  range, 
  or 
  else 
  in 
  the 
  contrast 
  

   afforded 
  between 
  a 
  more 
  or 
  less 
  elevated 
  tract 
  of 
  hilly 
  country, 
  and 
  the 
  

   lower 
  ground 
  into 
  which 
  on 
  the 
  East 
  it 
  slopes 
  down. 
  

  

  West 
  and 
  South-west 
  of 
  Thaietmio 
  stretches 
  a 
  belt 
  of 
  low 
  hills 
  

   much 
  scored 
  by 
  ravines 
  and 
  made 
  up 
  of 
  the 
  fossil-wood 
  beds 
  already 
  

   described. 
  The 
  axis 
  of 
  this 
  belt 
  of 
  country 
  runs 
  in 
  a 
  slightly 
  curved 
  

   line, 
  with 
  its 
  concavity 
  facing 
  the 
  river, 
  from 
  the 
  village 
  of 
  Pima-khon 
  

   fourteen 
  miles 
  West-north-west 
  from 
  Thaietmio 
  to 
  Alayua, 
  midway 
  be- 
  

   tween 
  Pulo 
  and 
  Kama, 
  giving 
  a 
  length 
  to 
  this 
  tract 
  of 
  twenty-five 
  miles 
  

   by 
  a 
  breadth 
  varying 
  from 
  six 
  to 
  ten 
  miles. 
  Leaving 
  this 
  belt 
  of 
  ground 
  

   in 
  a 
  Westerly 
  direction 
  across 
  the 
  Pani 
  (Punnee) 
  stream, 
  the 
  character 
  of 
  

   the 
  country 
  gradually 
  changes 
  in 
  accordance 
  with 
  the 
  fact 
  of 
  our 
  des- 
  

   cending 
  somewhat 
  on 
  to 
  the 
  lower 
  beds, 
  beneath 
  the 
  fossil-wood 
  group. 
  

   Across 
  the 
  Pani 
  stream 
  in 
  place 
  of 
  the 
  incoherent 
  fossil-wood 
  sands 
  

   we 
  come 
  on 
  to 
  not 
  very 
  dissimilar 
  beds, 
  but 
  in 
  which 
  marine 
  fossils 
  are 
  

   pretty 
  common 
  ; 
  and 
  which, 
  from 
  the 
  abundance 
  in 
  spots 
  of 
  that 
  shell 
  

   may 
  be 
  termed 
  Turritella 
  sands 
  ; 
  and 
  these 
  beds 
  are 
  either 
  very 
  high 
  in 
  

   the 
  series 
  of 
  the 
  Prome 
  group, 
  or 
  perhaps 
  correspond 
  in 
  part 
  with 
  the 
  

   Mogoung 
  sands, 
  intervening 
  between 
  the 
  Prome 
  and 
  fossil-wood 
  groups. 
  

   The 
  beds 
  of 
  the 
  previously 
  described 
  Prome 
  group, 
  from 
  the 
  ease 
  with 
  

   which 
  they 
  disintegrate, 
  give 
  rise 
  to 
  an 
  undulating 
  or 
  hilly 
  country, 
  with 
  

  

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