COMPARATIVE SPINNING TESTS. 17 
at the discretion of the manufacturer, provided he meets the require- 
ments of contract as to the strength and quality. Manufacturers 
who have experimented with the Arizona-Egyptian cotton have 
found that it is less wasty than other cottons and that it can be 
utilized satisfactorily as a substitute for most purposes; but so long 
as the manufacturer meets his contract, the amount of waste dis- 
carded in the manufacturing processes is not primarily of interest to 
the converter or consumer. In fact, manufacturers are reluctant to 
change while their business is on a profitable basis. However, on 
certain classes of goods, mixtures of two different cottons are made to 
advantage. Because the Arizona-Egyptian is a heavy bodied cotton, 
it is entirely possible that the entire amount produced can be utilized 
advantageously if mixed properly with these other cottons in the 
manufacturing processes. Manufacturers claim that the sooner this 
cotton comes on the market in large quantities, the easier will it be 
to place it on a competitive basis with other long-staple cottons of 
similar qualities. 
COMPARATIVE SPINNING TESTS MADE FROM THE CROP OF 1913-14. 
Previous to the tests made in the summer of 1915, there were 
similar tests conducted in the summer of 1914 on cotton of the 1913 
crop. 1 These preliminary tests were made on about 35 pounds of 
each grade of Arizona-Egyptian cotton and were run in comparison 
with a lap of Sakellaridis Egyptian and a lap of Sea Island cotton 
which had been run through the pickers in a cotton mill. There was 
not available a sufficient quantity of Arizona-Egyptian cotton to 
make these tests conclusive, nor were the Sakellaridis Egyptian nor 
the Sea Island cotton procured in the raw condition. It was assumed 
that the laps of the Sakellaridis and the Sea Island cottons had lost 
their usual amount of waste through the pickers and contained the 
average amount of waste usually present in cottons of their class 
when ready to be started into the cards. From this point on, the 
different lots were run under the same mechanical conditions without 
change in speeds or settings. The length of staple of the three lots 
was approximately equal. 
The percentages of waste for the five grades of Arizona-Egyptian 
cotton, based on the net amount of cotton fed to the pickers, were as 
follows : 
Per cent. 
Fancy 16. 38 
Extra 16. 35 
Choice 17. 44 
Standard * 23. 99 
Medium. 24. 35 
i These tests were conducted at the New Bedford Textile School by Mr. Fred Taylor. 
