20 BULLETIN 359, U. S. DEPARTMENT OF AGRICULTURE. 
tables and placed here for ready reference. The figures on the left- 
hand margin indicate cents per pound for the price, percentage for 
the waste, and pounds per skein for the breaking strength. Number 
80's yarn was taken for the comparison. The graph shows that 
there is no significant relationship between the prices of the different 
cottons and the percentages of waste and tensile strength. It shows 
that our domestic cottons are equal to, and in most respects superior 
to, imported cottons. It indicates also the preferences of manufac- 
turers which must be changed in order to introduce satisfactorily any 
new cotton. 
The laboratory test indicated that after bleaching, dyeing, and 
mercerizing, the Arizona-Egyptian and Sea Island cottons were 
practically equal to each other and were slightly superior to the 
Sakellaridis in their bleaching and mercerizing properties; that they 
were fully equal to each other in dyeing properties; and in tensile 
strength the advantage was slightly in favor of the Sea Island and 
Sakellaridis. The finished grey and mercerized yarns were com- 
paratively equal in luster; however, the yellow color was a little more 
evident in the Arizona-Egyptian than in the Sakellaridis, which in 
turn was somewhat more yellow than the Sea Island. The difference 
in color was more apparent between the Arizona and the Sakellaridis 
than between the Sea Island and Sakellaridis. 
