COMPARATIVE SPINNING TESTS. 5 



Table IV. — Waste percentages based on net amount of cotton fed into each machine. 





Kind of waste. 



ArizonarEgyptian. 



Sea Island. 



Sakellaridis Egyp- 

 tian. 



Machines. 



Extra. 



Choice. 



Stand- 

 ard. 



Me- 

 dium. 



Fancy. 



Extra 

 choice . 



Good. 



Fully 

 good 

 fair. 



Fair. 



Opener 



Visible: 



Dust room 



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 

 1.087 



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: 





Finisher 



.067 

 .674 



.068 

 .617 



.068 

 .646 



.068 

 .751 



.137 

 .617 



.067 

 .535 



.077 

 .850 



.069 

 1.111 



.07 





Motes and fly 



(A. 



Total visible 



1.052 





.741 

 .134 



.685 

 a.411 



.614 

 .341 



.819 

 ..341 



.754 



.602 

 .267 



.927 

 .540 



1.180 

 .069 



1.122 

 .140 





Total visible and 







.875 



.274 



.955 



1.160 



.754 



.869 



1.467 



1.249 



1.262 





Visible: 



Flat strippings 



Cylinder and dofier 

 strippings 





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 



Invisible 



1.837 





6.002 

 .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 







5.386 



6.410 



6.630 



6.994 



6.914 



7.341 



8.045 



7.538 



9.409 





Visible 





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. 



