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  • TREASURES FROM THE SEA
    ebook
    TREASURES FROM THE SEA
    HEDVIG LANDENIUS ENEGREN
    Purple dye is extracted from the glands of the molluscs Hexaplex trunculus, Bolinus Brandaris and Stramonita Haemastoma which, through a chemical reaction of photosynthesis, produces hues ranging from dark red to bluish purple color. The importance of purple dye since ancient times as a status symbol, a sign of royal and religious power is well documented. Less well known is se...

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