THE COXCHUKLA. 
61 
Regardless of the amount of cotton ginned, in computing the actual 
destruction we should include the badly-stained bolls with the 
destroyed bolls. A considerable part of the badly-stained cotton 
is regularly left by pickers on account of its being imperfectly ( opened 
out and not easy to handle. Furthermore, as will be shown in dis- 
cussing the effect of plant-bug injury on the quality of the lint, the 
picking of such lint is a distinct disadvantage, probably more than 
offsetting the increased weight attained. In Ceceda A. No. 14. 
therefore, the actual loss in 1905 may be considered to be equivalent 
to about 24.38 bales, or 0.2 bale per acre. 
Damage to cotton in Zaragoza. — Three examinations were made in 
Zaragoza, one in each of the first 3 blocks, following the plan here- 
tofore outlined of examining 25 plants per row. The data obtained 
represent local conditions only and do not necessarily indicate either 
the damage or the yield throughout each block. It should be noted, 
however, that the final yield of the 360 acres comprising the 3 blocks 
was 187 bales, whereas the examinations from which the data in the 
following table were obtained would indicate a yield of 193 bales. 
Table XXIX. — Local examinations in Zaragoza uith reference to cotton damaged by 
plant-bugs. 
Block. 
Zaragoza B 1 
end) 
Zaragoza B 2 (east 
end) 
Zaragoza B 3 (west 
end) 
Bolls not ruined. 
Bolls ruined. 
Lint 
picked 
and 
fallen 
from 
Per- 
fect. 
SUghtly 
stained. 
Total. 
burrs. a 
Per ct. 
39.56 
Per ct. 
16 
Per ct. 
6.7 
Perct. 
62. 2G 
24.98 
15.4 
11.3 
51.68 
63.5 
10 
5 
78.5 
Equiv- 
alent R( , dlv 
bales B W 
De- 
per 
acre. 
stained, bstroyed. 
Total. 
Equiv- Unopen 
alent bolls, 
bales 
per 
acre. 
0.49 
.521 
.61 
Per ct. 
9 
13.2 
3.7 
Perct. Perct. Perct. 
17.14 26 0.174 11.7 
19.92 33 .255 15.4 
11 14.7 .11 6.3 
a Oeducting 2.44 per cent, representing approximately the number of rained locks present in empty 
burrs. 
i> Adding 2.44 per cent of ruined locks present in empty burrs. 
EFFECT OF PLANT-BUG ATTACK ON QUALITY AND MARKET VALUE Of LINT. 
The market value of each bale of cotton is determined by examina- 
tion of samples of the lint by experts who judge of its relative quality. 
This grading of the staple limits the use to which each bale may be 
put. Stained cotton is the least desirable of all grades and generally 
brings a selling price of about 50 per cent of the average unstained 
grades. Tables XXVII and XXIX are illustrations o( instances 
wherein the percentage of slightly-stained cotton has been deter- 
mined in the field. This class may include as many of the entire 
number of bolls as 11 per cent, or 17 per cent of the lint picked, omit- 
ting bolls completely ruined. It is obvious that such inferior material 
reduces the value of the better grades with which it may be mixed. 
