447 
portion to the spread of the trees. Abstracted, the figures give the 
following results ; 
Number of 
compartments. 
Total nnmber of 
trees measured. 
Total girth 
measurements. 
Ft. 
Total crown 
measurements. 
Maximum dia- 
meter. 
Ft.' 
Total yield of 
rubber of measur- 
ed trees, in tolas. 
Remarks, 
1 
2 
3 | 
4 
. 
5 
1 6 
j | 
\ 
Spread Outturn per tree. 
: per tree. 
| r~ 
4 
TOO 
1,064' 
6,416' 
3,362 
1 64'.. .33^ tolas -83 of a lb. 
S 
162 
1,446' 
9,844' 
5 , 4 H 
j 61 ...33! „ =- ‘83 „ 
6 
95 
703 
6.035' 
3,896 
63 ...41 ,, - roo „ 
7 
96 
649' 
5.8*5; 
3,769 
61 ...39 „ - *97 „ 
8 
97 
J 
475 ' 
! 
4.487 
2,281 
| 58 ...29^ „ = 73 „ 
1 
The girth measurements of the trees are so difficult of being made 
in a uniform manner, owing to air roots which form supplementary 
stems having a tendency to anastomose, that the figures under this 
head may be ignored; but if the figures relating to the average 
spread of trees in the different compartments are compared, and it 
is borne in mind that the trees in compartment 4 were tapped for 
the second year in succession, it seem that, as above stated, the 
largest outturn is obtained from the trees having the best and 
widest crowns. 
16. Another interesting statement is that attached to this report 
as Appendix C, which shows the result of 
Result of tapping trees 3 ta ppj n g 2 \ good selected trees in compart- 
vears in succession. Ob b r 
ments 2 and 3 tor three years in succes- 
sion, 1896-97, 1897-98. and 1898-99. This experiment should have 
been commented on in last year's report, but seems to have escaped 
observation. Abstracted, the results were as fellows : 
Yield, in lbs. 
Number of ( K ^ 
trees. 1896-97. 1897-98. 1898-99. 
21 ... 46 48' 9 
and they seem to prove that, although the first two years’ opera- 
tions will yield nearly equal outturns— agreeing in this with the 
figures quoted in paragraph 3 for compartments as a whole, — there, 
then, in the third year, comes a terrible falling off of 75 per cent. 
And as the trees in question, for t*he most part, are specially good 
specimens, and, in fact, are the dominant trees in compartments 
2 and 3, the experiment should warn us to be very careful in work- 
ing over the plantation too frequently, in successive years, without 
giving the trees sufficient time for recuperating from their former 
\\usi 
