A 1929 article by Dr. W. Kling on chemical auxiliary products used in textile finishing, such as washing, bleaching, dyeing, carbonizing and mercerizing. It sets out the properties an ideal auxiliary should have, divided into indispensable requisites and valuable qualities. It then reviews actual products from soap and Turkey red oil to the proprietary lines of H. Th. Böhme A.G. of Chemnitz (Tetracarnit, Novocarnit, Oleocarnit, Avirol, Lanaclarin, Floranit, Eucarnit). It concludes that a universal ideal auxiliary is probably unattainable and that special-purpose products are the practical course.