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Red of Sorgho. The Scientific American 21, 1865 Messrs. Editors: — Some papers give, as a new discovery the fabrication of a red coloring matter obtained...

"It is a fact long known that the sorgho contains a red coloring matter."
in Red of Sorgho, The Scientific American 21, 1865
coloriasto.blogspot.com/2025/06/red-...

#naturaldyes #historyofdyes #durra #reddyes #coloriasto

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