﻿lithsonian 
  Report, 
  1943. 
  — 
  Coo 
  

  

  Methods 
  of 
  Tapping 
  Hevea 
  Trees, 
  Native 
  and 
  improved. 
  

  

  Above, 
  tapping 
  with 
  a 
  small 
  ax, 
  the 
  native 
  method 
  in 
  Brazil. 
  The 
  ax 
  wounds 
  do 
  not 
  kill 
  the 
  trees, 
  but 
  the 
  

   bark 
  becomes 
  too 
  rough 
  for 
  more 
  latex 
  to 
  be 
  collected. 
  Photograph 
  from 
  the 
  Amazon 
  Valley, 
  above 
  Para. 
  

   Below, 
  method 
  of 
  tapping 
  developed 
  from 
  Ridley's 
  discovery 
  at 
  Singapore 
  of 
  repeated 
  paring 
  of 
  the 
  

   same 
  wound. 
  

  

  