COMPARATIVE SPINNING TESTS. 5 
Table IV. — Waste percentages based on net amount of cotton fed into each machine. 
Kind of waste. 
Ar izona-E gypt ian . 
Sea Island. 
Sakellaridis Egyp- 
tian. 
Machines. 
Extra. 
Choice. 
Stand- 
ard. 
Me- 
dium. 
Fancy. 
Extra 
choice . 
Good. 
Fully 
good 
fair. 
Fair. 
Opener 
Visible: 
0.25 
.312 
.687 
0.187 
.25 
.562 
0.375 
.25 
.937 
0.375 
.187 
.749 
0.319 
.510 
.765 
0.312 
.312 
.625 
0.521 
.260 
.911 
0.314 
.251 
1.067 
0.189 
Opener, motes and fly. 
Breaker, motes and fly 
Total visible 
.757 
.567 
1.249 
.937 
.999 
1.562 
.5 
1.311 
.5 
1.594 
1.531 
1.249 
.937 
1.692 
1.043 
1.632 
1.444 
1.513 
.946 
Total visible and 
invisible 
2.186 
.999 
2.062 
1.811 
3.125 
2.186 
2.735 
3.076 
2.459 
Visible: 
Dust room 
Finisher.... 
.067 
.674 
.068 
.617 
.088 
.546 
.068 
.751 
.137 
.617 
.067 
.535 
.077 
.850 
.069 
1.111 
.07 
Motes and fly 
Total visible 
Invisible 
Total visible and 
invisible 
Visible: 
Flat strippings 
Cylinder and doffer 
1.052 
.741 
.134 
.685 
a. 411 
.614 
.341 
.819 
.341 
.754 
.602 
.267 
.927 
.540 
1.180 
.069 
1.122 
.140 
.875 
.274 
.955 
1.160 
.754 
.869 
1.467 
1.249 
1.262 
Cards 
3.233 
1 
.769 
3.832 
1.179 
1.031 
3.905 
1.252 
1.031 
3.574 
1.216 
1.216 
5.203 
1.069 
.855 
5.702 
1.140 
.926 
3.925 
1.373 
1.275 
4.804 
1.552 
1.551 
4.705 
1.47 
Motes and fly 
Total visible 
1.837 
5.002 
.384 
6.042 
.368 
6.188 
.442 
6.006 
.988 
7.127 
a. 213 
7.768 
a. 427 
6.573 
1.472 
7.907 
a. 369 
8.012 
1.397 
Total visible and 
invisible 
Visible 
5.386 
6.410 
6. 630 
6.994 
6.914 
7.341 
8.045 
7.538 
9.409 
Combers 
11.127 
a. 867 
11.764 
.110 
12.811 
a. 088 
12. 406 
a. 093 
13. 675 
.756 
14. 529 
a. 2 
15.981 
a. 822 
16.362 
.435 
16. 408 
a. 257 
Total visible and 
10.260 
11.874 
12. 723 
12.313 
14.431 
14.329 
15. 159 
16. 797 
16. 151 
a Invisible gain, not loss, as result of weather conditions. 
There seems to be no significant relationship between the grade of 
Arizona-Egyptian cotton and the percentage of waste or between the 
variety of cotton and the amount of waste discarded, when the per- 
centage of waste is considered at any of the individual processes of 
manufacture. Arizona-Egyptian cotton, however, shows more uni- 
formity in this respect than any other, with the Sea Island second. 
By referring to Table V which represents the total amount of waste 
taken from the different processes computed on the original amount 
fed into the opener, it will be noticed that there seems to be some 
uniformity of relationship between the percentages of waste and 
the different grades of Arizona-Egyptian cotton, ascending in order 
of grade, as follows: Extra, 17.69 per cent; choice, 18.56 per cent; 
standard, 20 per cent; and medium, 20.90 per cent. The average 
percentage of waste of each variety is, Arizona-Egyptian cotton, 19.28; 
Sea Island, 23.23 ; and Sakellaridis, 26.57. 
