﻿STONE 
  IMPLEMENTS 
  IN 
  LATERITE. 
  51 
  

  

  merable 
  quantity 
  in 
  the 
  conglomerates 
  of 
  the 
  Sattavedu 
  and 
  Alicoor 
  hills. 
  

   These 
  hills 
  and 
  many 
  of 
  the 
  isolated 
  gneiss 
  hills 
  to 
  the 
  south 
  and 
  south- 
  

   east 
  must 
  have 
  stood 
  up 
  as 
  islands 
  in 
  the 
  laterite 
  sea. 
  

  

  From 
  the 
  elevations 
  at 
  which 
  the 
  remains 
  of 
  the 
  lateritic 
  formations 
  

   Elevation 
  at 
  which 
  are 
  found 
  together 
  with 
  implements 
  on 
  the 
  flanks 
  

  

  implements 
  have 
  heen 
  f 
  ,, 
  .-.. 
  , 
  .,-, 
  , 
  , 
  . 
  ., 
  

  

  found 
  connected 
  with 
  ot 
  tne 
  Ahcoor 
  mils 
  and 
  elsewhere, 
  there 
  appears 
  

   reason 
  to 
  believe 
  that 
  during 
  the 
  latter 
  part 
  of 
  the 
  

   laterite-period 
  the 
  Peninsula 
  of 
  India 
  was 
  depressed 
  some 
  500 
  — 
  600 
  feet 
  

   below 
  its 
  present 
  level. 
  That 
  this 
  has 
  been 
  the 
  case 
  I 
  am 
  the 
  more 
  

   inclined 
  to 
  believe 
  from 
  having 
  studied 
  the 
  distribution 
  of 
  the 
  lateritic 
  

   beds, 
  containing 
  implements 
  of 
  human 
  manufacture, 
  northward 
  of 
  the 
  

   Madras 
  area 
  in 
  the 
  Nellore 
  and 
  Kistna 
  districts. 
  

  

  In 
  the 
  papers 
  on 
  the 
  distribution 
  of 
  stone 
  implements 
  in 
  Southern 
  

   India 
  read 
  before 
  the 
  Geological 
  Society 
  of 
  London 
  in 
  1868, 
  I 
  entered 
  

   fully 
  into 
  the 
  subject, 
  and 
  therefore 
  quote 
  the 
  following 
  passages 
  : 
  — 
  

  

  " 
  The 
  highest 
  elevation 
  of 
  the 
  implement-bearing 
  beds 
  which 
  has 
  

   been 
  accurately 
  measured 
  is 
  370 
  feet 
  above 
  mean 
  sea-level 
  at 
  Madras; 
  

   this 
  is 
  at 
  Kircumbaddy, 
  on 
  the 
  north 
  side 
  of 
  the 
  Soornamookey 
  valley. 
  

   I 
  am 
  indebted 
  for 
  this 
  measurement 
  to 
  Mr. 
  W. 
  E. 
  Robinson, 
  C. 
  E., 
  of 
  

   the 
  Madras 
  Railway, 
  a 
  gentleman 
  who 
  took 
  great 
  interest 
  in 
  the 
  dis- 
  

   covery 
  of 
  the 
  stone 
  implements, 
  and 
  himself 
  made 
  a 
  large 
  collection 
  of 
  

   them 
  from 
  this 
  locality. 
  

  

  " 
  The 
  next 
  highest 
  measured 
  elevation 
  is 
  that 
  of 
  the 
  lateritic 
  debris 
  

   occurring 
  on 
  the 
  elevated 
  ground 
  near 
  the 
  Arconum 
  railway 
  junction, 
  

   which 
  attains 
  a 
  height 
  of 
  upwards 
  of 
  300 
  feet 
  above 
  the 
  sea-level. 
  

  

  " 
  During 
  my 
  last 
  visit 
  to 
  the 
  Alicoor 
  hills, 
  in 
  August 
  1865, 
  I 
  found 
  

   several 
  implements 
  lying 
  on 
  the 
  much-weathered 
  surface 
  of 
  the 
  laterite, 
  a 
  

   considerable 
  distance 
  up 
  the 
  slope 
  of 
  the 
  hills 
  north-north-west 
  of 
  Naiken- 
  

   polliam, 
  at 
  an 
  elevation 
  which 
  I 
  believe 
  considerably 
  exceeds 
  that 
  of 
  

   the 
  foregoing 
  cases, 
  Unfortunately 
  I 
  had 
  no 
  instruments 
  with 
  me 
  at 
  

  

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