Indian Yellow was allegedly made from the urine of cows fed on mango leaves, dried into balls, but was outlawed as it cruel to the cattle. Chrome Yellow was widely used by the Impressionists.
Willers
Yellow ochre, orpiment, Naples yellow, lead-tin yellow, Indian yellow, chrome yellow, and cadmium yellow – most toxic or at least harmful to someone.
Indian Yellow was thought to have been extracted from cow urine, but has been found in few paintings. Chrome Yellow was the mainstay of the Impressionists and the nineteenth century.
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