. "Woulfe, Peter"@en . "1803Z"^^ . . . . "Irish chemist" . "1727Z"^^ . "Peter Woulfe (1727 \u2013 1803) was an Irish chemist and mineralogist. He first had the idea that wolframite might contain a previously undiscovered element (tungsten).In 1779, Woulfe reported the formation of a yellow dye when indigo was treated with nitric acid."@en . "Peter Woulfe"@en .