IN the two previous volumes the preparing processes in cotton spinning have been fully treated. In this volume the subject of spinning and the preparation of yarns is treated in an equally exhaustive manner, with, I trust, an avoidance of some defects that existed in the earlier books. In a work of this kind, which covers so much ground and deals with many features upon which other men have written, it is perhaps unnecessary to suggest that originality is a difficult matter to obtain in one's treatment of the subject. In my efforts to do so I may have, occasionally but unconsciously, adopted similar methods of other writers 5 when such has been pointed out to me I have tried, and I hope successfully, to prevent this being an offence, and I sincerely trust that readers and writers alike will find in my efforts a desire to simply present the study of cotton spinning in an interesting and instructive manner, so that it may prove of value to those whose well-being is dependent on the success of that part of the industry it represents.