Part III.] 
Beeson : BeeKole Borer oj Teak. 
97 
Tree No. 3. Dominant; thick underwood of bamboos, Jcyathaungwa 
and tinwa, and shrubs ; some old lopped bamboo 
clumps. 
Tree No. 8. Dominant over No. 7 and other teak ; tinwa abundant, 
but lopped. 
The annual incidence in these trees is given in the following table :— 
Table 34. —Annual Incidence in a 22 year-old Plantation , Konbilin t 
Tharrawaddy . 
Serial No. 
Girth 
1896— 
1904. 
1905 
1906 
1907 
1908 
§|s 
o o 
1911 
N 
O 
1913 
1914 
1915 
1 1916j 
1917 
Total. 
2 
15 
1 1 0 
0 
0 
0 
0 
0 
0 
0 
l~~ 
7 
15 
2 
0 
0 
0 
0 | 0 
0 
X) 
0 
0 
0 
0 
0 
2 
6 
30 
1 
.. j l 
0 
2 
0 
0 
0 
0 
0 
4 
1 
30 
2 
1 
3 
3 
35 
' . . 1 . . 
2 
0 
0 
0 
4 
1 
0 
7 
8 
40 
1 1 0 
[ 
0 
1 
0 
0 
0 
3 
3 
8 
Totals . 
3 
0 
1 
0 
0 
2 1 ! 
1 
2 
3 
0 
0 
4 
6 
4 
25 
Reduced Values . 
j 
•• 
1 
0-39 0-0 
1 
0-0 
0-0 
! ' | 1 1 
0-26 0-13 0-26, 
1 1 I 
0-39 
0-0 
i 
0-0 | 
0-52 
1 1 
0-78 0-52 
1 1 
N j 
In the Annual Incidence graph the values for this group of sample 
trees are plotted as for a mean tree ot 29‘0 inches girth with 3 25 beeholes. 
The Vertical Distribution of Beeholes 
[Diagram 3.] 
There is a considerable diversity of opinions as to the abundance 
of beeholes in different parts of the teak tree. In plantations the 
divisional officer gets the impression that beeholes occur low down near 
ground-level; in girdlings the lessee considers they appear most 
commonly in top logs and the top ends of logs. The following figures 
will show the actual distribution of beeholes in the trees analysed in 
sample plots. 
The trees are divided into lengths of 3 feet from ground-level 
upwards ; the number of beeholes in the same 3 feet length of all the 
sample trees is determined, and this total is reduced to a percentage 
of the whole number of beeholes. 
A reference to Table 35 and Diagram 3 will show the percentage 
of beeholes occurring in any 3-foot length of an average tree. 
[ 325 ] 
i 
