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Indigo

Indigo is a hot topic right now, hot in the dyeing community, and hot among scholars who work on dyes.  I was recently at a conference on colors where half … Read More

Optical Brighteners: Paper

When we think of paper, especially historical paper, we tend to think of white paper.  We think of the fine white paper used for books, or for letters or manuscript … Read More

Dyebath Acidity and Litmus

Many organic dyes, what the eighteenth-century colour-makers called “vegetable” colors, are sensitive to the alkalinity or acidity of the dyebath.  I have elsewhere shared the range of bright reds and … Read More

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