3?art III.] Beeson: Beeliole Borer of Teak. 
69 
Tree No. 5, 25}," BH. 15, dominant; bamboos around but not 
high, nevertheless reaching to crown. 
Tree No. 6, 24", BH. 12, dominant; bamboos not dense, but one 
high bamboo on one side. 
Tree No. 7, 25," BH. 7, free crown, but crippled and bent; surrounded 
by bamboos. • 
Tree No. 8, 19}", BH. 13, free-standing, bamboos all round. 
In group No. 1-4 the mean girth is 23*5 inches and the mean number 
of beeholes is IT7. In group 5—8 the mean girth is 23’4 inches and 
the mean number of beeholes is 11*7. The incidence of the two 
groups is therefore identical, and the influence of bamboos is nil or 
not appreciable. 
Group 9—14. Higher up the slope with abundant undergrowth 
and bamboos, and poor height growth. 
Tree No. 9, 20", BH. 17, free-standing ; bamboos low and under¬ 
growth present, but the tree stands* well in the open. 
Tree No. 10, 19", BH. 3, dominant; height growth very much 
poorer; undergrowth denser and higher. 
Tree No. 11, 22", BH. 30, dominant; height growth as No. 10; 
bamboos all round, shrubs dense. 
Tree No. 12, 18}," BH. 7, as above ; bamboos abundant to the 
exclusion of shrubs. 
Tree No. 13, 20}," BH. 26, as above ; surrounded by bamboos 
and shrubs. 
Tree No. 14, 32," BH. 34, dominant ; undergrowth abundant 
and bamboos nearby. 
The general incidence in this group is much higher than elsewhere. 
Group 15 — 19. Higher than the previous groups on poorer soil; 
all small trees, that have been checked by competition with bamboos 
and shrubs and not by suppression of their own species. Crowns recently 
freed by thinning and cutting back of bamboos. No big teak in this 
area ; chosen to see if dense undergrowth impedes oviposition. 
Tree No. 15, 17," BH. 6. Tree No. 17, 14}," BH. 1. 
Tree No. 16, 12}," BH. 1. Tree No. 18, 11", BH. 0. 
Tree No. 19, 13f," BH. 3. 
The conclusions drawn from these data are given below :— 
1. The presence of bamboos and shrub undergrowth does not reduce 
oviposition; on the contrary in two groups (a) without 
bamboos, and (6) with bamboos it is the same, and in (c) 
with bamboos and shrubs, it is highest, and in (c?) where 
bamboos are densest it is intermediate. 
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