Encyclopedia article on dyeing (tinte) from a Spanish-language encyclopedic dictionary. It opens with the history of dyeing from antiquity (Tyrian purple, indigo, wax-resist methods of India), then covers the chemistry of fixing dyes on vegetable and animal fibres, mordants (alum, tin and chromium salts), and the dyeing apparatus (padding machines, roller vats, Weber apparatus, washing machines). The later pages give practical recipes by colour, including madder reds on wool and silk, indigo blues, blacks, browns and garment dyeing.