COMPARATIVE SPINNING TESTS. 
Table VI. — Prices of the different grades of each lot of cotton in comparison vAth the 
percentages of tvaste discarded. 
[Bales arranged in groups according to the apparent grade relation of the different lots.] 
Price of cotton 
Percentage of waste . 
Arizona 
$0.21 
17.69 
Island 
fancy. 
$0.21 J 
23.42 
Arizona 
choice. 
$0,201 
18.56 
Island 
extra 
choice. 
$0.20J 
23.05 
Sakel- 
laridis 
good. 
$0. 21£ 
25.36 
Arizona 
stand- 
ard. 
$0,191 
20.00 
Sakel- 
laridis 
fully 
good 
fair. 
$0.20^ 
26.38 
Arizona 
me- 
dium. 
$0.18 
20.90 
Sakel- 
laridis 
fair. 
$0.19f 
27.97 
It should be borne in mind that all the cotton represented as waste 
is not actually lost, but the greater part of it is reworked in the 
manufacture of cheaper goods. 
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Fig. 
-Progressive waste percentages of Arizona-Egyptian, Sea Island, and Sakellaridis Egyptian 
cottons. 
TENSILE STRENGTH COMPARISONS. 
In order to ascertain the difference in tensile strength between the 
grades of Arizona-Egyptian cotton and between Arizona-Egyptian, 
Sakellaridis Egyptian, and Sea-Island cottons, there were manu- 
factured from each of these the following numbers of yarn: 10's, 
20's, 30's, 40's, 50's, 60's, 80's, and 100's. The slight variations in 
the numbers of yarn were standardized on a weight basis. A portion 
of this cotton yarn was spun with two twist constants, 1 viz, 3.25 and 
3.80. 
1 Multiply the square root of the number of yarn by the constant to find the turns per inch of twist inserted 
in the yarn while spinning. 
