SPINNING TESTS OF UPLAND LONG-STAPLE COTTONS. 
17 
Table X. — Breaking strength in pounds per skein of carded yarns and of 
combed yarns resulting from the 13 to 15 per cent comber settings. 
Variety. 
Staple. 
Carded 
yarn. 
Combed 
yarn. 
Difference. 
Pounds. 
Per cent. 
1A 
1A 
1A 
1A 
1A 
H 
24.03 
25.56 
34.93 
25.88 
26.13 
32.98 
33.07 
34.50 
41.92 
32.12 
33.47 
42.05 
8.94 
8.94 
6.99 
6.24 
7.34 
9.07 
37.6 
34.9 
20 
Webber Xo. l 
Webber No. 2 
Delia 
24.1 
28.1 
27.5 
The last column of this table shows that the combed yarn ranges 
from 20 to 37.6 per cent stronger than the carded. The increased 
breaking strength of the combed yarn is due to the fact that most 
of the short fibers have been removed by the comber. It is safe to 
assume that fabrics made of combed yarns possess better wearing 
qualities than similar fabrics made of carded yarns. 
An analysis of Table X shows that there was but slight difference 
in strength between the yarns made from Durango, Columbia, and 
Webber. These varieties, whether spun from the carded or combed 
cotton, appear to be closely comparable in this respect. The Lewis 
and Delta varieties, however, here show a marked superiority over 
the others, their breaking strength being from 25 to 33 per cent 
greater in carded yarns and slightly more than 25 per cent greater 
in combed yarns. The carded yarn from Lewis had a breaking 
strength practically 2 pounds greater than that from Delta, while 
the combed yarn from Delta was thirteen one-hundredths of a pound 
stronger than that from Lewis. It is notable that the yarns made 
from the Delta types, which are usually small-boiled cottons, were 
stronger than those from the big-boiled types, and that the Lewis, 
which seems to be an acclimated strain of Mississippi cotton brought 
several years ago to the Piedmont section of North Carolina, is fully 
equal in strength to the native Delta cottons. 
CULTURAL CHARACTERISTICS. 
The purpose of this publication is to show the comparative spin- 
ning values of the varieties tested, but it must not be assumed that 
their relative value to the farmer is the same as to the spinner. The 
Columbia, Webber, and Durango have much larger bolls than the 
Lewis and are much more rapidly picked. In a number of test plots, 
where single rows of 16 varieties of staple cotton have been grown for 
comparison, the Lewis has been among the lowest in yield and in 
gross value per acre when calculated at the same price, while Durango 
and Columbia have stood high. The percentage of lint to seed in the 
Lewis has been lower than in the Durango and Columbia. The de- 
