ROVING.
9. Too much twist in roving makes bad yarn, and spoils the top rolls on spinning frames. The square root of the number is about the twist for roving. It gives the Carder a chance to keep up with the spinning, and gives the Spinner a chance to make a better quality of yarn. If there is too much twist in the roving, you cannot draw it on spinning frames without spreading the rolls; but then it will spoil the top rolls. Keep your numbers even if you can. Size from every fine speeder and average it every day, and examine the yarn every time you size, to see if it is good. By doing so it may save you considerable trouble.