IMPROVED COTTON AIRPLANE FABRIC. 
23 
Cloth mercerized in the piece 
Warp 35 lbs. 
pilling ...... 88 lbs. 
Fig. 5. — Elasticity curves reproduced from those made by the automatic recording 
device of the cloth-testing machine during the testing of plain-weave cloth mercerized 
in the piece. Cloth made of 3/80's yarn spun from American Egyptian cotton of 
grade No. 1 (fancy). 1| 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. 
Strength of caustic, 64 degrees Twaddle. 
