Part 3 of an International Correspondence Schools instruction text on textile dyeing, covering the dyeing of synthetic and man-made fibers. It treats rayon, cuprammonium rayon, acetate, Arnel, nylon, polyester, acrylics (Orlon, Acrilan, Creslan), Dynel, Zefran, Saran and other fibers, with dye classes, recipes, and tables of dyestuffs with Colour Index names. It also describes pressure-dyeing equipment (kiers, Hy-Press and Lo-Press machines), continuous Thermosol and disperse-vat processes, and dyeing of fiber blends. It ends with examination questions for students.