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Supermarket molluscs reveal Roman secret

Supermarket molluscs reveal Roman secret
trefwoorden: Engeland - romeinse tijd - verf - paars
A British amateur chemist has worked out how the ancient Romans dyed the togas of emperors this deep colour thanks to a bacterium found in cockles from the supermarket Tesco.
The hue had special significance as the colour of imperial power. Cleopatra also had the sails on her ship dyed the same colour.
The recipe for the dye had been kept a craft secret, even in ancient Egypt and Rome. There are few references to the dying process in the historical literature.

Lees verder bij: BBC News (13 september 2003)