﻿20 
  THEOBALD 
  : 
  GEOLOGY 
  OF 
  PEGU. 
  

  

  It 
  requires 
  little 
  reflection 
  to 
  perceive 
  the 
  essentially 
  artificial 
  nature 
  of 
  

   any 
  such 
  result, 
  when 
  the 
  factors 
  dealt 
  with 
  to 
  obtain 
  it 
  embrace 
  

   stations 
  having 
  a 
  rainfall 
  of 
  50 
  inches 
  a 
  year, 
  and 
  others 
  indicating- 
  a 
  

   rainfall 
  of 
  220. 
  Any 
  Procrustean 
  attempt 
  to 
  evolve 
  from 
  such 
  data 
  a 
  

   uniform 
  climatal 
  mean 
  for 
  the 
  entire 
  province 
  must 
  be 
  misleading, 
  and 
  

   I 
  accordingly 
  append 
  the 
  accompanying 
  table 
  (p. 
  22.) 
  to 
  enable 
  the 
  reader 
  

   at 
  a 
  glance 
  to 
  take 
  in 
  the 
  rainfall 
  at 
  the 
  several 
  stations 
  in 
  Burmah 
  where 
  

   observations 
  are 
  recorded. 
  From 
  the 
  data 
  before 
  us, 
  it 
  is 
  clear 
  that 
  in 
  

   Pegu 
  there 
  are 
  three 
  main 
  divisions 
  or 
  zones 
  of 
  climate 
  as 
  regards 
  rain- 
  

   fall, 
  viz., 
  a 
  littoral, 
  sub-littoral, 
  and 
  inland 
  zone. 
  The 
  littoral 
  rainfall 
  

   is 
  afforded 
  by 
  the 
  stations 
  of 
  Mergui, 
  Kyouk-hpiu, 
  and 
  Akyab, 
  all 
  imme- 
  

   diately 
  on 
  the 
  sea. 
  These 
  stations 
  exhibit 
  a 
  mean 
  rainfall 
  (neglecting 
  

   fractions) 
  of 
  188 
  inches, 
  and 
  a 
  mean 
  range 
  of 
  excess 
  or 
  variation 
  among 
  

   them 
  of 
  31 
  inches. 
  The 
  sub-littoral 
  rainfall 
  is 
  shown 
  by 
  the 
  station 
  of 
  

   Shuay-gyin, 
  Moulmein, 
  Sandoway, 
  and 
  Tavoy, 
  all 
  within 
  or 
  close 
  on 
  the 
  

   tideway 
  of 
  their 
  respective 
  rivers, 
  and 
  reaches 
  to 
  224 
  inches 
  with 
  a 
  range 
  

   of 
  difference 
  between 
  the 
  stations 
  of 
  40 
  inches. 
  The 
  inland 
  rainfall 
  is 
  

   shown 
  by 
  three 
  stations, 
  Thaiet-mio, 
  Prome, 
  and 
  Myanoung, 
  the 
  record 
  

   of 
  the 
  two 
  first 
  stations 
  ranging 
  over 
  10 
  and 
  6 
  years 
  respectively. 
  This 
  

   inland 
  rainfall 
  is 
  only 
  50 
  inches, 
  with 
  a 
  range 
  among 
  the 
  stations 
  of 
  

   6 
  inches 
  only. 
  

  

  The 
  above-mentioned 
  stations 
  are 
  those 
  which 
  seem 
  best 
  adapted 
  

   to 
  represent 
  the 
  three 
  divisions 
  of 
  rainfall 
  and 
  climate, 
  which 
  appear 
  to 
  

   be 
  met 
  with 
  in 
  Pegu 
  and 
  the 
  adjoining 
  region; 
  but 
  I 
  may 
  add 
  a 
  few 
  

   words 
  in 
  explanation 
  of 
  the 
  omission 
  of 
  some 
  other 
  stations 
  from 
  the 
  

   calculation. 
  For 
  instance, 
  Henzada 
  stands 
  at, 
  or 
  a 
  little 
  above, 
  the 
  

   termination 
  of 
  the 
  tideway, 
  and 
  its 
  rainfall 
  is 
  a 
  little 
  under 
  90 
  inches, 
  but 
  

   from 
  its 
  geographical 
  position 
  it 
  is 
  clearly 
  not 
  a 
  representative 
  station, 
  

   standing- 
  as 
  it 
  does 
  a 
  little 
  out 
  of 
  the 
  inland 
  climatal 
  zone, 
  and 
  at 
  the 
  

   same 
  time 
  on 
  the 
  extreme 
  edges 
  of 
  estuary 
  conditions. 
  Its 
  rainfall 
  

   coincides 
  with 
  its 
  position, 
  but 
  it 
  cannot 
  be 
  used 
  in 
  calculating 
  the 
  mean 
  

   fall 
  of 
  a 
  zone 
  within 
  which 
  it 
  just 
  barely 
  falls. 
  

  

  ( 
  208 
  ) 
  

  

  