DANGEROUS COLORING MATTER USED TO DECEIVE THE PUBLIC. Share full article. May 3, 1884. Credit... The New York Times Archives. See the article in its original context from May 3, 1884, Page 8 Buy ...

This article was originally published with the title “ Artificial Production of the Coloring Matter of Madder ” in Scientific American Magazine Vol. 21 No. 4 (July 1869), p. 54 doi:10.1038 ...

The coloring matter extracted by means of an alkali, and separated from the woody portions is known as archil, or orseille. A new kind of archil was introduced in 1856 by MM. Guinon, ...