Part III. - ] Beeson: BeeJiole Borer of Teah. 83 
Number of Trees Analysed , 39 [with stumps, felled August 1918], 
Date of Analysis , 17th-26th April 1919. 
Table. 25. — Girth-Beehole Incidence in a 24 year-old Plantation , 
Yanaungmyin , Pyinmana, 1918. 
3 Inch 
Girth- 
Clasa. 
Serial 
Number 
of 
Sample 
• 
Girth in 
Inches. 
Number 
of 
Beeholes. 
Arith¬ 
metic 
mean 
of 
Girth- 
Arithmetic 
mean 
Beeholes 
per 
Girth- 
Adjusted 
means. 
Tree. 
Class. 
Class. 
f 
1 
21 
12 
8 
23 
12 
2 
• •• 
... 
... 
1 
25 
12 
2 
• •• 
... 
... 
10—12 
28 
12 
3 
• • . 
... 
... 
34 
12-5 
6 
• •• 
... 
... 
35 
12-5 
8 
... 
... 
37 
12-5 
1 
12-2 
4-3 
4-3 
5 
13 
18 
... 
... 
13—15 
< 
2 l 
15-5 
14 
1 
4 
•- 
... 
s 
22 
14 
10 
14-1 
8*2 
*8*2 
2 
17 
6 
... 
... 
... 
3 
16 
5 
... 
... 
... 
12 
17-5 
14 
... 
... 
... 
16 
18-5 
12 
... 
... 
16—18 
■< 
26 
17 
13 
• •• 
... 
30 
18 
7 
• •• 
... 
... 
31 
18-5 
9 
... 
... 
... 
36 
18 
2 
39 
17 
4 
17*5 
8*0 
*8-0 
8 
21-5 
5 
... 
11 
20 
22 
... 
19—21 
■< 
14 
20-5 
0 
... 
.. 
... 
15 
20 
1 
... 
l 
32 
21 
15 
I ’20-6 
8*6 
8*6 
6 
24-5 
20 
... 
... 
13 
22 
! 14 
22—24 
«< 
18 
22 
21 
' 
... 
24 
24 
13 
... 
... 
27 
24 
9 
23-3 
15-4 
.... 
25—27 
{ 
9 
33 
27 
25 
7 
58 
*260 
3*2*5 
16-3 
f 
1 
30-5 
5 
... 
... 
28—30 
4 
29 
10 
... 
... 
l 
29 
28 
6 
*29-1 
,.7-0 
... 
f 
10 
I 32 
14 
... 
31—33 
19 
31 
20 
32-1 
18*3 
18-3 
l 
38 
33-5 
21 
... 
... 
The arithmetic mean girth of 22 dateable sample trees of the above 
is 23*5 inches ; the graph number of beeholes per 23-5 inch tree is 11-3. 
The arithmetic mean number of beeholes of the same 22 trees is 13-7 ; 
the mean girth on the girth-beehole curve bearing 13-7 beeholes is 
[ 311 ] h 2 
