IMPROVED COTTON AIRPLANE FABRIC. 
41 
Inches 
•70 
.60 
.50 
.40 
•30 
.20 
.10 
! 
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3/SO's CI 
DOPED 
OTHS OF VARIOUS COTTONS 
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. 1 - Sakellaridi3 
. 2 - American Egyptian 
. 3 - Sea Island 
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1 
1 
30 
40 
50 
60 
70 
90 
100 11 
10 20 
Fig. 18. — Elasticity curves showing the effect of dope upon plain-weave cloth 
made of 3/80's mercerized yarn spun from the different varieties of cotton. 
Twist per inch of single yarn, 35.6. 
Twist per inch of ply yarn, 20.6. 
Construction of cloth, 68 ends by 68 picks. 
Strength of caustic, 64 degrees Twaddle. 
Percentage of dope, 60. 
