MANUFACTUBING TESTS OF COTTON STANDARDS. 
11 
SUMMARY. 
Low Middling, Good Middling Yellow Tinged, Middling Yellow 
Tinged, Low Middling Yellow Tinged, Good Middling Yellow 
Stained, Middling Yellow Stained, Good Middling Blue Stained, 
and Middling Blue Stained cotton selected throughout the cotton 
belt were tested to determine their relative spinning values. 
All the grades were subjected to the same mechanical conditions. 
These conditions were the same as those used on earlier tests of the 
Official Cotton Standards of the United States for Upland white 
cotton. 
The percentages of visible waste made by the different grades, were 
as follows: 
Grade. 
White. 
Yellow 
Tinged. 
Yellow 
Stained. 
Blue. 
Stained. 
Per cent. 
Per cent. 
7.04 
8.21 
11.99 
Per cent. 
6.85 
10.75 
Per cent. 
7.24 
Middling 
10.24 
Low Middling 
8.23 
From the percentages of visible waste it appears that the waste 
follows the grade of the cotton. 
The Middling Yellow Stained and Low Middling Yellow Tinged 
gave off considerable fly. These grades were followed in order by 
Good Middling Yellow Stained, Middling Blue Stained, and Mid- 
dling Yellow Tinged. The remaining three grades gave off the 
usual amount of fly. 
The breaking strengths in pounds per skein of 120 yards of 22's 
yarn (4.50X V22) spun from the different grades were as follows: 
Grade. 
White. 
Yellow 
Tinged. 
Yellow 
Stained. 
Blue 
Stained. 
Good Middling 
Pounds. 
Pounds. 
85.7 
88.5 
81.2 
Pounds. 
87.2 
82.9 
Pounds. 
76 6 
Middling 
79.5 
Low Middling 
81.3 
These results show that the highest grade did not always give the 
strongest yarn. 
The bleaching and dyeing tests show that Low Middling, Good 
Middling Yellow Tinged, Good Middling Yellow Stained, and Mid- 
dling Yellow Stained can be bleached satisfactorily for white yarns. 
The Middling Yellow Tinged and Low Middling Yellow Tinged 
when bleached can be used for dyeing both light and dark shades. 
