more perfect will be the yarn in strength and evenness. It must
be conceded, that continuing to draw a sliver without twist begets
a necessity for doubling it. The character of the sliver undergoes
a change at every stage of its working, and we are therefore
obliged to modify our treatment to some extent, at each successive
point. Our rule is to continue its working in the drawing frame,
as long as the proper resistance in the staple can be maintained,
to draw evenly without twist. With the application of twist to
the sliver, we gain an element of resistance by which we can con-
tinue the operation safely to any extent desired. The question
may be asked, Why continue to work it beyond the apparent
straightening of the fibres? The answer will depend much on
the fabric you seek to produce. The coarse fabrics, ranging in
Nos. from 12 to 24 yarns, do not require the expense of extended
working; but for yarn No. 30 and upwards, intended for tight
woven fabrics, extended working under rolls is all-important, in
order to divest the sliver as much as possible of the short sub-
stance remaining in it, with whatever of leafy particles and other
foreign matter cannot be otherwise reached. These, by elaborate
working, are all sloughed off and taken up by the clearers and
otherwise scattered; thus leaving you the strongest portion to go
into yarn.
It was my purpose to make some observations on the working of cotton through pickers and the card, but having detained you too long with my remarks on the present topic, I will defer them to some future opportunity, with my thanks for your patient
