 In the 19th century, Michel-Eugène Chevreul undertook a classification, both comparative and with respect to Fraunhofer lines.He categorized "ginjolin" (or gingeolin), a color of the "Instruction générale pour la teinture" of 1671 obtained with rose madder and similar to the color of tile, as in red-orange 4 tone 15.In 1765 a new method for making a "gingeolin" orpiment made it yellower.