this set of four research notes discuss different stages of cotton textile production. the reports concern the use of sodium sulphite in scouring of white cotton textiles, the effect of periodate oxidation and borohydride reduction of cotton fabrics on the efficiency of dyeing and printing with reactive dyes, rot proofing cotton fabrics by treatment with acrylonitrile, and problems in chemical processing of cotton textiles. the last report covers foaming in sizebox during sizing, dye stains on bleached white cloth, white resist stains on yarn in dyed cloth, yarn damage in dyed cheeses, effect of yarn density of cheeses on evenness in dyeing, yellow stains in cloth containing redyed warp yarn, improvement in cloth dyeings, mercerization of cloth dyed with indigosols, dark spots on dyed cloth, dark colored stains on dyed poplin, softening of rubber blanket on sanforizing machine, yellow stains on white finished cloth