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Historical Painting Techniques, Materials, and Studio Practice

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28. On these "clothlet colors," see Wallert, A. 1993. Natural organic colorants on<br />

medieval parchment: anthocyanins. ICOM Committee fo r Conservation Preprints,<br />

516-23; <strong>and</strong> Willhauk, N. 1981. Farbprobleme spatmittelalterlicher Buchmalerei.<br />

Restaurator (1-2):103-34.<br />

29. Bietola is a beet or garden beet; bietolina = weld (Reseda luteola) (?).<br />

30. A plant with the same name, gilosia (Amaranthus tricolor?), is mentioned in Bol.<br />

MS, 117, p. 439, for making a purple clothlet color.<br />

31. Gettens R. J., <strong>and</strong> E. West Fitzhugh. 1966. Azurite <strong>and</strong> blue verditer. Studies in<br />

Conservation (2): 54-61.<br />

32. Quite similar is Siena MS I, IV, p. 22. In Simone's manuscript, however, the<br />

vermilion prescribed by Ambruogio is replaced for a black ink. The recipe recurs<br />

in a rather abbreviated version in Florence, Biblioteca Laurenziana, MS Ashburnhamia<br />

349, fol. 84v.<br />

Wallert 47

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