20 BULLETIN 1488, V. S. DEPARTMENT OF AGRICULTURE 
Table 9. — Average irregularity of the nine grades of eastern and western yarns 1 
Average deviation 
Kind of yarn 
Eastern 
Western 
Strength 
Size 
Strength 
Size 
Gray 
Per cent 
3.61 
3.79 
4.60 
3.39 
Per cent 
1.85 
2.06 
2.46 
1.97 
Per cent 
3.94 
3.65 
4.49 
3.50 
Per cent 
2. 13 
Bleached (single) ... _ _______ ... .. 
1.76 
Bleached (double) . ._ .. . 
2.55 
Dyed 
1.88 
Average extreme variation 
Gray. .. 
18.20 
18.43 
20.58 
16.55 
9.99 
10.60 
11.73 
10.29 
20.56 
18.16 
22.17 
17.22 
10.40 
Bleached (single) . . . . . 
8.64 
Bleached (double). . ___ ._._. ... .. .. .. _. 
11.43 
Dyed . . 
9.57 
1 Obtained by 24 observations made on 22s yarn with 21.1 turns per inch (skein test). 
Table 10. — Average irregularity of the strength of the nine grades of eastern and 
western 22s yarns x 
Kind of yarn 
Average deviation 
of strength 
Average extreme 
variation of 
strength 
* 
Eastern 
Western 
Eastern 
Western 
Gray... . ... .... ... .... . , ...... ... 
Per cent 
8.65 
8.38 
10.51 
8.96 
Per cent 
8.63 
7.72 
10.40 
9.49 
Per cent 
44.72 
46.39 
52.73 
45.88 
Per cent 
40.85 
Bleached (single)... ..... .. ... .... 
42.70 
55.54 
Dyed 
48.10 
i Obtained by the single-strand method from 32 observations of each grade. 
The results shown in Tables 9 and 10 were obtained from the same 
yarn, the only difference being in the method of testing. Table 9 
gives the results of the skein tests, whereas Table 10 gives the results 
of the single strand tests. The latter method checked the skein tests 
in respect to the relative uniformity of the single bleach and double 
bleach. 
28s TWO-PLY YARN (SINGLE STRAND) 
The irregularity of the strength of the 28s two-ply yarn (single- 
strand test) finished by different mills is given in Table 11. Note 
that the percentages are less than those on the single yarns. (See 
Table 10.) This conforms to the general belief that ply yarns are 
more uniform than single yarns. 
