3 19 
occasions  while  on  the  opposite  side  ol  the  tree  th.ere  were  12 
incisions  each  opened  on  only  one  occasion. 
■X! 
CJ 
o 
o 
(N 
The  difference  in  yield  between  the  new  incisions  and  the  re- 
newed incisions  is  not  so  great  as  the  former  experiment  but  it 
seems  apparent  that  if  the  maximum  flow  of  latex  is  to  be  ob- 
tained, that  either  the  original  wound  must  be  re-opened  from 
time  to  time  or  the  incisions  made  closer  that  6 inches  apart. 
Although  a much  larger  number  of  trees  were  employed  in  the 
(experiments  conducted  in  the  .Singapore  Hotanical  (iardens  the 
i 
