﻿ISOSEISTS 
  AND 
  SEISMIC 
  AREA. 
  49 
  

  

  this 
  earthquake 
  it 
  was 
  seen 
  that 
  quite 
  one-third 
  of 
  the 
  area 
  over 
  

   which 
  it 
  was 
  sensible 
  lay 
  in 
  regions 
  from 
  which 
  it 
  was 
  hopeless 
  to 
  

   attempt 
  to 
  obtain 
  any 
  information, 
  while 
  more 
  than 
  half 
  of 
  the 
  re- 
  

   maining 
  area 
  was 
  sparsely 
  inhabited 
  by 
  ignorant 
  and 
  illiterate 
  tribes, 
  

   with 
  but 
  few 
  and 
  widely 
  separated 
  centres 
  from 
  which 
  an 
  intelligent 
  

   account 
  could 
  be 
  hoped 
  for. 
  In 
  these 
  circumstances 
  it 
  would 
  have 
  

   been 
  impossible 
  to 
  obtain 
  such 
  detailed 
  information 
  as 
  would 
  alone 
  

   have 
  allowed 
  of 
  the 
  delineation 
  of 
  the 
  actual 
  course 
  of 
  the 
  isoseismic 
  

   lines. 
  Moreover, 
  any 
  attempt 
  to 
  have 
  obtained 
  this 
  information 
  would 
  

   undoubtedly 
  have 
  occupied 
  much 
  time, 
  besides 
  being 
  almost 
  fore- 
  

   doomed 
  to 
  failure, 
  so 
  the 
  attempt 
  was 
  deliberately 
  abandoned 
  in 
  

   order 
  that 
  attention 
  might 
  be 
  given 
  to 
  those 
  points 
  with 
  regard 
  to 
  

   which 
  this 
  earthquake 
  seemed 
  likely 
  to 
  add 
  to 
  our 
  knowledge. 
  

  

  This 
  being 
  so, 
  I 
  shall 
  not 
  enter 
  on 
  a 
  detailed 
  review 
  of 
  the 
  

   accounts 
  from 
  various 
  places 
  (sufficient 
  will 
  be 
  found 
  in 
  other 
  parts 
  

   of 
  this 
  report,) 
  and 
  will 
  merely 
  notice 
  certain 
  peculiarities 
  in 
  

   the 
  distribution 
  of 
  the 
  energy 
  of 
  the 
  shock 
  which 
  can 
  be 
  detected 
  in 
  

   the 
  accounts. 
  

  

  Two 
  partial 
  exceptions 
  may 
  also 
  be 
  made 
  to 
  the 
  general 
  impossi- 
  

   bility 
  of 
  drawing 
  the 
  isoseismic 
  lines. 
  The 
  first 
  is 
  in 
  the 
  case 
  of 
  the 
  

   area 
  over 
  which 
  serious 
  damage 
  to 
  brick- 
  built 
  houses 
  was 
  common, 
  

   This 
  corresponds 
  to 
  the 
  isoseist 
  between 
  degrees 
  3 
  and 
  4, 
  as 
  defined 
  

   on 
  p. 
  43 
  or 
  between 
  7 
  and 
  8 
  of 
  the 
  Rossi-Forel 
  scale. 
  The 
  other 
  

   is 
  the 
  outer 
  limit 
  of 
  the 
  sensible 
  shock, 
  and 
  may 
  be 
  taken 
  as 
  the 
  limit 
  

   between 
  degrees 
  1 
  and 
  2 
  of 
  the 
  Rossi-Forel 
  scale. 
  The 
  areas 
  included 
  

   in 
  these 
  two 
  lines 
  are 
  indicated 
  on 
  Map 
  No. 
  I 
  by 
  a 
  darker 
  and 
  a 
  

   lighter 
  tint, 
  respectively. 
  

  

  The 
  irregularities 
  in 
  the 
  course 
  of 
  the 
  inner 
  line 
  need 
  little 
  com- 
  

   ment; 
  they 
  are 
  closely 
  connected 
  with 
  the 
  geological 
  structure 
  of 
  the 
  

   country, 
  and 
  are 
  largely, 
  if 
  not 
  entirely, 
  due 
  to 
  the 
  well-known 
  fact 
  

   that 
  earthquakes 
  are 
  more 
  destructive 
  in 
  alluvial 
  ground 
  than 
  on 
  rock 
  

   at 
  an 
  equal 
  distance 
  from 
  the 
  centre. 
  

  

  At 
  the 
  outer 
  limit 
  there 
  are 
  some 
  peculiarities 
  which 
  need 
  more 
  

   E 
  ( 
  49 
  ) 
  

  

  