Specimen article from The Melliand on printing with Indigosol dyes, which are water-soluble, stable vat dyes, on cotton and viscose. It covers the chlorate steaming process, the Indigosol Developers, and the nitrite process for combining Indigosols with Rapid Fast Colours. It also covers aftertreatment and gives sample print paste recipes in a table. The two following pages show printed swatches: coloured discharge prints on indigoid grounds, and Naphtol AS combinations and Rapid Fast Colours on artificial mixed fabrics. The article ends with "To be continued".

A 1929 technical article from The Melliand on printing acetate silk (acetate rayon) and fabrics that mix it with other fibres. It surveys dyestuff classes for all-acetate fabrics (basic, acid, mordant, vat, Indigosol, Cellit Fast, Celliton) with fixing and discharge methods. It then covers mixed fabrics of cotton or viscose with acetate, wool with acetate, and real silk with acetate, with sample print paste recipes and dyestuff lists.