TESTS OF WASTE, TENSILE STRENGTH, ETC., OF COTTON, 



3 



The cotton thus secured has been supplemented by a few bales from 

 other sources. This cotton was shipped early in July to Danville, Va., 

 where all of it was stored on the same warehouse floor and allowed to 

 stand until October 1, so that the bales, in spite of their varied origin, 

 might come to the same condition as to moisture, etc. 



Thirty-five pounds from each bale have been sent to the textile 

 department of Clemson Agricultural College, Clemson, S. C, and 35 

 pounds to the North Carolina Agricultural and Mechanical Textile 

 School at Raleigh, N. C. Thirty pounds of each bale are to be 

 reserved for use in the preparation of record sets. 



The 10 to 12 bales of each grade remaining at the Danville mills 

 have been thoroughly mixed and allowed to stand for a day or two 

 just before entering the beaters. A composite sample was taken from 

 each lot of 10 to 12 bales so mixed, and this was sen t to Washington for 

 accurate tests of various kinds. 



MILL CONDITIONS OF THE EXPERIMENTS. 



The same number of yarn (20-22) has been made at the mill from 

 each grade, using the regular mill machines and methods, with the 

 speeds, settings, relative humidity, and other factors the same for 

 each grade of cotton. The organization and other figures were deter- 

 mined after consultation with a number of representative American 

 mills, the officers of which generously undertook to examine and com- 

 ment on the figm^es first determined upon by the experts of the Depart- 

 ment of Agriculture, Messrs. D. E. Earle and W. S. Dean. In this way 

 mill conditions representative of American practice were secured, as 

 shown in Table I. 



Table 1. — Organizations, speed, 



and settings used with regular mill machines for five 

 official cotton grades . 



ORGANIZATIONS.! 





Card. 



Drawing, 



grains per 



yard. 



Slubber, 

 liank. 



Interme- 

 diate, 

 hank. 



Roving, 

 hank. 





No. of yarn. 



Lap, 



ounces per 



yard. 



Sliver, 



grains per 



yard. 



Spiiming, 

 doubling. 



12 



16 

 14 

 13 

 12 

 10 



65 

 60 

 52 

 50 



45 



60 

 60 

 52 

 50 

 45 



0.55 

 .55 

 .47 

 .75 

 .80 



1.6 



1.4 



1.16 



1.7 



2.2 





1 



16.. 



2.6 

 3.33 



5.4 

 6.5 



1 



22 



1 



28.. 



2 



36. . 



2 







1 These figures, of course, do not refer to mills devoted to specialties. 



