Difference between revisions of "St. John's blood"
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J.Hofenk-de Graaf, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969. | J.Hofenk-de Graaf, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969. | ||
| − | == | + | == Sources Checked for Data in Record == |
* Judith Hofenk-de Graaff, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969 | * Judith Hofenk-de Graaff, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969 | ||
Revision as of 17:48, 1 May 2016
Description
A red dyestuff, similar to kermes, obtained from the dried bodies of the insect Porphyrophorus polonicus (formerly Margarodes polonicus). These insects live on the roots of the Scleranthus penennis found in the sandy areas of northeastern Europe.
Synonyms and Related Terms
Saint John's blood; Polish cochenille; Polish grains; Polish red
Additional Information
J.Hofenk-de Graaf, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969.
Sources Checked for Data in Record
- Judith Hofenk-de Graaff, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969
- J. Thornton, 'The Use of Dyes and Colored Varnishes in Wood Polychromy', Painted Wood: History and Conservation, The Getty Conservation Insitute, Los Angeles, 1998