IMPROVED COTTON AIRPLANE FABRIC. 
21 
In, 
2 
* 
Cloth woven from gray yarn 
Warp 86 lbs. 
Pilling ..... 88 lbs. 
Fig. 3. — Elasticity curves reproduced from those made by the automatic recording 
device of the cloth-testing machine during the testing of plain-weave cloth made 
from 3/80's gray yarn spun from American Egyptian cotton of grade No. 1 
(fancy), If inches in length of staple. 
Twist per inch of single yarn, 33.8. 
Twist per inch of ply yarn, 18.5. 
Construction of cloth, 68 ends by 68 picks. 
