22 



BULLETIN 1030, V. S. DEPARTMENT OF AGEICULTURE. 



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 o. — Percentages of waMe 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 of comparison. 



Meade. 



Sea 

 Island. 



Meade. 



Sea 

 Island. 



Meade. 



Sea 

 Island. 





Sandy 

 soil. 



Clay 

 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 b 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 im^sible 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 





35.4 

 24.1 

 16.3 



39.4 

 25.9 

 17.6 



34.8 



No. 80 do. . . . 





22.3 



No. 100. do. . . . 



15. 2 17. 4 



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 skeLn 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 yams 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 lOO'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 yam. 



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 



" Copies of this bulletin may be obtained without cost upon applicatioii to the United 

 States Department of Agriculture. 



