﻿STONE 
  IMPLEMENTS 
  IN 
  LATERITE. 
  43 
  

  

  The 
  same 
  feature 
  of 
  lateritic 
  gritty 
  sand 
  resting 
  on 
  whitish 
  

  

  grits 
  is 
  also 
  shown 
  in 
  the 
  channel 
  leading 
  from 
  the 
  

  

  Onatoor. 
  Onatoor 
  tank 
  to 
  the 
  Damul 
  tank. 
  The 
  most 
  

  

  westerly 
  occurrence 
  of 
  a 
  formation 
  referable 
  to 
  the 
  lateritic 
  series 
  is 
  

  

  a 
  small 
  bed 
  of 
  intensely 
  red 
  gritty 
  sand 
  with 
  

  

  Red 
  gritty 
  sands 
  at 
  

  

  Maramungalum. 
  laterite 
  pellets 
  and 
  quartzite 
  pebbles 
  at 
  Mara- 
  

  

  mungaium, 
  at 
  the 
  junction 
  of 
  the 
  old 
  and 
  new 
  Palar 
  alluvia. 
  

  

  The 
  gravels 
  are 
  especially 
  well 
  developed 
  near 
  Parundoor 
  and 
  

  

  Vellatoor 
  to 
  the 
  north-north-east 
  of 
  the 
  Corree 
  

   Parundoor. 
  

  

  section. 
  In 
  a 
  new 
  channel 
  leading 
  northward 
  into 
  

  

  the 
  Parundoor 
  tank, 
  the 
  pale 
  gravels, 
  which 
  contain 
  a 
  bed 
  of 
  lateritic 
  

  

  gravel 
  from 
  6 
  inches 
  to 
  2 
  feet 
  thick, 
  rest 
  on 
  the 
  eroded 
  surface 
  of 
  a 
  bed 
  of 
  

  

  clayey, 
  pebbly, 
  reddish 
  mottled 
  grit. 
  The 
  thickness 
  of 
  the 
  grit 
  is 
  not 
  

  

  shown. 
  In 
  mineral 
  character 
  the 
  grit 
  is 
  strikingly 
  like 
  that 
  occurring 
  at 
  

  

  Devaroyempakkam 
  south-east 
  of 
  Tennary. 
  One 
  or 
  two 
  rather 
  doubtful 
  

  

  stone 
  implements 
  were 
  found 
  near 
  the 
  Parundoor 
  tank 
  kalingula, 
  and 
  a 
  

  

  considerable 
  number 
  were 
  obtained 
  on 
  the 
  surface 
  of 
  the 
  gravel 
  beds 
  

  

  between 
  Ackeramperam 
  and 
  Singilpadi. 
  

  

  Between 
  Singilpadi 
  and 
  Puddoor 
  the 
  sandy 
  beds 
  are 
  well 
  shown, 
  

   IntheSurebaucumval- 
  and 
  in 
  the 
  shallow 
  valley 
  extending 
  eastward 
  from 
  

   ey 
  ' 
  Surebaucum 
  to 
  the 
  head 
  of 
  the 
  Tennary 
  tank 
  the 
  

  

  gravels 
  are 
  also 
  admirably 
  exhibited 
  on 
  the 
  surface. 
  Between 
  Sure- 
  

   baucum 
  and 
  Puddoor 
  they 
  are 
  rather 
  unusually 
  lateritic 
  for 
  that 
  part 
  of 
  

   the 
  country. 
  

  

  ( 
  c 
  ) 
  . 
  — 
  Stone 
  Implements 
  in 
  the 
  Laterite. 
  

  

  Many 
  of 
  the 
  chipped 
  stone 
  implements 
  found 
  within 
  the 
  limits 
  of 
  the 
  

   Madras 
  area 
  having 
  been 
  discovered 
  in 
  situ, 
  it 
  will 
  be 
  as 
  well 
  to 
  give 
  a 
  

   fuller 
  account 
  of 
  the 
  sections 
  in 
  which 
  they 
  were 
  found. 
  

  

  The 
  section 
  in 
  which 
  the 
  first 
  discovery 
  of 
  implements 
  in 
  situ 
  was 
  

  

  made 
  occurs 
  on 
  the 
  north 
  side 
  of 
  the 
  Corteliar 
  

   Attrampakkam 
  nullah 
  ■ 
  . 
  . 
  . 
  

  

  sections, 
  river 
  in 
  the 
  valley 
  of 
  a 
  nullah 
  falling 
  into 
  that 
  river 
  

  

  ( 
  43 
  ) 
  

  

  