﻿Smithsonian 
  Report, 
  1943. 
  — 
  Cook 
  

  

  Plate 
  3 
  

  

  A 
  Castilla 
  Tree 
  With 
  Severe 
  Tapping 
  Wounds. 
  

   Four 
  or 
  five 
  tappings 
  are 
  indicated, 
  although 
  many 
  trees 
  do 
  not 
  survive 
  a 
  second 
  or 
  a 
  third 
  tapping 
  The 
  

   creamy 
  thick 
  latex 
  of 
  Castilla 
  often 
  fails 
  to 
  flow, 
  but 
  coagulates 
  in 
  the 
  cuts 
  and 
  is 
  gathered 
  as 
  scrap 
  rubber. 
  

   i. 
  ne 
  cuts 
  are 
  made 
  more 
  oblique 
  if 
  a 
  flow 
  of 
  latex 
  is 
  expected. 
  

  

  