"They have next to undergo a process called heckling. This is nothing more than drawing the fibers again and again through a comb, to straighten them and make them lie side by side. The comb is called a heckle, and is placed with its steel teeth upright.
"As the heckler draws the fibers through this heckle he combs out a great deal of coarse broken fibre. This would not do for such fabrics as teacher showed us, but is used up in making coarser goods.
"The heckled fibers are called line. They are fine and soft to the touch, but very tough and will not easily break. They have a glistening, silvery appearance, not unlike silk, and are of a pale yellow color.