Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Starting out, however, with a consideration of the fibre itself and of the changes it undergoes under varying conditions of heat and moisture: noting the effect of its changes in dimension and conformation as affecting the setting of rolls, as affecting the tension of stock passing through machinery 111 the different processes, as affecting the traveller pull in spin ning, and as affecting the strength of the yarn itself in many operations which it undergoes — the parts that temperature and humidity play in manufacturing are strikingly apparent, and the advantages to be gained by maintaining those conditions as nearly uniform as possible, go without saying.