manufacturer can avoid these errors and build up a happy relationship with his yarn supplier—who can, of course, benefit from the checking as much as can his customer.

Before the yarn is delivered to the knitting shops, it has either undergone scientific preparation or been kept for varying periods in specially heated and moistened conditioning rooms where it is gradually brought to exactly

Cones of Rayon yarn in Conditioning Room

the right degree of moistness for efficient knitting. This is most

essential as yarn that is too dry will make fabric

of poor appearance, while yarn that is too

moist will probably break down in the knitting process.

Left: Cones of Rayon yarn in Conditioning Room.