Indigo has a powerful hold on the imagination but, until now, the actual application of the dye and possible explanations underlying the practice have rarely been considered. The dyestuff is equally fascinating to the scientist, to Adolf von Baeyer in the 19th century, or to the modern chemist using modern instrumental methods for its characterisation. Indigoid dyes, lichen dyes, even mud and other naturally occurring organic colouring matters were among the subjects for discussion at the 18th Meeting of Dyes in History and Archaeology, held in Brussels in 1999. The textiles and other artefacts coloured with the dyes are no less interesting and varied. Romanian and Polish textiles and, as the cover illustrates, Japanese ukiyo-e prints are only examples of the possible uses discussed in this book.