Yarn and wool in rugs

The wool goes through an elaborate and extensive cleaning process, for sometimes as much as a third of its weight is grease, dirt, and foreign matter.

It must be absolutely clean before it can be properly dyed.

There are two kinds of yarn—worsted and woolen. Worsted yarn is made from only the longest fibers. They are carefully combed till they all lie parallel, then twisted together.

This process makes a very lustrous yarn which is extremely strong in proportion to its thickness.

Woolen yarn is spun from all lengths of fibers which are thoroughly tumbled about every which way so that they become somewhat felted before being twisted. The result is a thick, furry yarn with less gloss.