266 
turn  giving  their  output  of  rubber  from  May  20th,  previous  returns 
having  appeared  in  No.  3,  of  this  Bulletin. 
Date 
1903. 
No.  of  trees  tap- 
ped. 
May,  20 
10 
21 
10 
23 
10 
30 
10 
June,  4 
10 
8 
10 
c/: 
C 
0 (/ 
V 
CTj 
CD 
a- 
nj 
0 u- 
CJ 
1 
cu 
C/j 
I 
Remarks. 
0 ^ 
25 
"o 
"O 
1 
I 
d 2 
2 2 
0^ 
.4-^ 
• 0 
i ? 
oz.  I 
oz. 
OZ. 
20 
38 
9i 
474 
10 
Yield  of  latex  handed 
20 
10 
42 
27J 
'bi 
2 
29f 
over  to  Government 
Analyst  for  analysis. 
20 
4 
1 2lf 
20 
26| 
4 
3OT 
1 
It  w'as  suggested  that  the  herring  bone  system  of  tapping  should 
be  tried.  Five  trees  of  medium  size,  never  before  tapped  were 
selected  for  experiment,  but  if  these  were  also  in  flower,  the  results 
obtained  cannot  by  any  means  be  held  to  be  conclusive.  This  sys- 
tem has  been  so  often  described  that  no  further  description  is 
necessary,  beyond  the  fact,  that  in  this  case,  the  instrument  used- 
was  a half  round  chisel,  very  sharp,  which  enabled  a thin  piece  of 
bark  to  be  shaved  off  daily  without  touching  the  cambium.  Two 
herring  bones,  2 feet  long,  tri-ribbed  on  either  side  of  the  central 
channel,  were  made  to  each  tree,  tapping  extending  for  15  days. 
Practically,  no  scrap  was  produced,  while  the  rubber  obtained,  was 
of  a clear  white  translucent  colour,  easily  soluble  in  benzine  and 
leaving  no  residue,  thus  proving  it  to  be  a really  fine  quality  rubber. 
Below  is  a return  showing  the  results  of  these  15  tappings. 
July,  8 
2i 
OZ.  of  pressed  rubbers 
9 
5i 
yy  yy 
10 
8| 
yy  <y 
1 1 
7i 
y>  yy 
13 
6f 
yy  yy 
14 
9 
yy  yy 
15 
Ilf 
yy  yy 
16 
1 1 
yy  yy 
17 
loi 
yy  yy 
Hi 
yy  yy 
20 
12 
yy  yy 
21 
14 
yy  yy 
22 
I3i 
yy  yy 
24 
1 1 
yy  yy 
26 
12 
yy  yy 
A.  D.  M. 
