22 
BULLETIN" 1030, U. S. DEPARTMENT OF AGRICULTURE. 
During the 1920 season additional spinning tests were conducted 
by the United States Department of Agriculture, through the cotton- 
testing specialists of the Bureau of Markets, on representative bales 
of Meade and Sea Island cottons. 
The results of these tests were published in Bulletin 946 (7) en- 
titled " Comparative spinning tests of Meade and Sea Island cot- 
tions," " from which the data in Table 5 have been taken. 
Table 5. — Percentages of waste obtained and breaking strength of various sizes 
of yarns spun from Meade and Sea Island cottons grown in different seasons. 
1916-17 
1918-19 
1919-20 
Items cf comparison. 
Meade. 
Sea 
Island. 
Meade. 
Sea 
Island. 
Meade. 
Sea 
Island. 
Sandy Clay 
soil. soil. 
Visible waste: 
Pickers a per cent. . 
Cards «... do 
Combers a do 
1.80 
7.66 
22.45 
1.04 
7.04 
23.26 
1.63 
5.70 
19.39 
1.63 
5.32 
15.03 
2.34 
6.49 
18.85 
3.14 
10.01 
16.12 
1.05 
5.03 
15.20 
Total visible & do 
Invisible waste & do 
29.48 
.74 
29.34 
.27 
24.82 
2.12 
20.55 
.74 
25.51 
2.54 
26.10 
3.97 
19.79 
3.63 
Total visible and invisible waste from 
pickers, cards, and combers & .per cent . 
30.22 
29.61 
26.94 
21.29 
28.05 
30.16 
23.42 
Size of yarn (3.50 twist multiplier used): 
No. 10. . . . .poundsc. . 
60.1 
109.2 
69.8 
128.7 
No. 23 do. . . . 
No. 40 do 
129.7 
144.7 
103.8 
54.6 
33.7 
22.6 
15.5 
107. 69 
53.5 
30.7 
19.6 
12.8 
122.6 
58.5 
No. 60 do 
No. 80 do. . . . 
No. 100 do.... 
"i5.*2"' 
"ii'.'i" 
35.4 
24.1 
16.3 
39.4 
25.9 
17.6 
34.8 
22.3 
15.6 
a Based on the net weight fed to the respective machines. 
b Based on the net weight fed to the opener picker, 
c Per skein of 120 yards. 
The results of these tests are summarized in the bulletin cited, as 
follows : 
The grade and staple of the Meade and Sea Island cottons tested were 
practically equal for the seasons of 1916-17 and 1918-19, but were unavoidably 
different for the season of 1919-20. 
The cotton was run under as nearly identical conditions as possible. 
Averaging the visible waste for the three seasons, it was found that the Meade 
cotton was 3.50 per cent more wasty than the Sea Island. 
Comparing the breaking strength of the Meade and Sea Island yarns for the 
three seasons, a difference of 17.2 pounds was found in favor of the Sea Island 
for the 23's yarn and 1.68 pounds for the 100's yarn. Under the adverse weather 
conditions during the growing season of 1919-20, the breaking strength of the 
sandy-soil Meade was equal to that of the Sea Island for the finer numbers 
of yarn. 
CONCLUSIONS. 
Experiments with Meade cotton through several years under a 
variety of soil and climatic conditions in the Sea Island belt have 
demonstrated that this variety can be substituted for Sea Island 
11 Copies of this bulletin may he obtained without cost upon application to the United 
States Department of Agriculture. 
