
UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 990 
Contribution from the Bureau of Markets and Crop Estimates 
H. C. TAYLOR, Chief JW'^U-U 
Washington, D. C. PROFESSIONAL PAPER October 20, 1921 
PRELIMINARY MANUFACTURING TESTS OF THE OF- 
FICIAL COTTON STANDARDS OF THE UNITED STATES 
FOR COLOR FOR UPLAND TINGED AND STAINED 
COTTON. 
By W. R. Meadows, Cotton Technologist, and W. G. Blair, Specialist in Cotton 
Testing. 
CONTENTS. 
Page. 
Grades of cotton tested 1 
Origin of cotton used 1 
Mechanical conditions 2 
Percentages of waste 3 
Moisture determinations 4 
Page. 
Strength of yarns 5 
Manufacturing properties 6 
Bleaching properties : 6 
Summary 11 
GRADES OF COTTON TESTED. 
The spinning tests 1 herein described were conducted to determine 
the relative values of the following grades of cotton : 
Low Middling L.M. 
Good Middling Yellow Tinged G.M.Y.T. 
Middling Yellow Tinged M.Y.T. 
Low Middling Yellow Tinged L.M.Y.T. 
Good Middling Yellow Stained G.M.Y.S. 
Middling Yellow Stained M.Y.S. 
Good Middling Blue Stained G.M.B.S. 
Middling Blue Stained M.B.S. 
ORIGIN OF COTTON USED. 
The cotton for these tests was purchased by expert cotton classers 
of the Bureau of Markets for use in the preparation of the Official 
Cotton Standards of the United States for color for Upland tinged 
and stained cotton. 
1 This cotton was classed by members of the committee authorized to hear disputes 
under the provisions of the United States cotton futures act. The spinning tests were 
conducted in the textile department of the North Carolina State College of Agriculture 
and Engineering, under the general direction of W. R. Meadows, cotton technologist, and 
were made by W. G. Blair, specialist in cotton testing, assisted by C E. Folk, E. S. Cum- 
mings, and H. B. Richardson, assistants in cotton testing, and E. F. Upton, formerly 
assistant in cotton testing. 
55812°— 21— BulJ. 990 1 
