22 
PLANT-BUGS INJURIOUS TO COTTON BOLLS, 
insects had been abundant, and the results of the examination are 
summarized in the following table : 
Table III. — Injury by plant-bugs to cotton bolls. 
BOLLS. 
Diameter. 
Number. 
Uninjured. 
Slightly injured. 
Inches. 
i- J 
15 
10 
1 

b'2 
1-1} 
Total 
25 
2 
2 
LOCKS. 
Number. 
Destroyed by 
bugs. 
Slightly injured 
by bugs. 
Destroyed by 
weevils. 
Uninjured. 
GO 
40 
45 
15 
8 
11 
1 
2 
6 
12 
100 
60 
19 
3 
18 ' 
FEEDING PUNCTURES. 
Total. 
Number in Number in Number in 
destroyed slightly in- uninjured 
locks. jured locks. locks. 
Average per 
destroyed 
lock. 
Average per 
slightly in- 
jured lock. 
Average per 
uninjured 
lock. 
Average per 
destroyed 
boll. 
366 
300 
346 20 
186 i 82 

32 
7.7 
12.4 
2.5 
7.0 

2. 6 
26 
30 
666 
532 102 32 
8.9 
5.3 
1.8 
28 
Destroyed bolls. Slightly injured bolls. 
- 
Destroyed locks. 
Slightly injured 
locks. 
Unin- 
jured 
locks. 
Maximum Minimum 
number of number of 
punctures, punctures. 
Maximum 
number of 
punctures. 
Minimum 
number of 
punctures. 
Maxi- 
mum 
number 
of punc- 
tures. 
20 
Mini- 
mum 
number 
of punc- 
tures. 
Maxi- 
mum 
number 
of punc- 
tures. 
Mini- 
mum 
number 
of punc- 
tures. 
Maxi- 
mum 
number 
of punc- 
tures. 
69 7 
1 
5 
1 
81 
15 
55 
16 
22 
4 
16 
1 
10 
a Two locks destroyed by boll weevil larvae. 
b Including one boll with 55 feeding punctures by bugs, lint only slightly stained at time of examination. 
The data given in Table III will serve as a guide to the relation 
between plant-bug punctures and the damage which results, as well 
as an example of a condition which may be occasionally met with in 
cotton fields of northern Texas where large numbers of plant-bugs 
are concentrated in small areas. Fortunately such occurrences are 
not common and are generally restricted to small areas where the 
surroundings are favorable for the breeding of the bugs in large 
numbers. 
