Roman vitriol

English Noun - en Q107184 en possibly obsolete en copper(II) sulfate<id:Q107184>. en 1758 Valuable Secrets in Arts and Trades ...: Containing Upwards of One Thousand Approved Receipts Relative to Arts and Trades ... 219 Then add two ounces of gum-arabic, and one of Roman vitriol, which infuse four days before straining, and the ink is done. en 1785 The Sportsman's Dictionary; Or, The Gentleman's Companion: ... The scalding mixture, generally used, is made in the following manner: Take of corosive sublimate, verdigrease in fine powder, and Roman vitriol, of each two drams; of green vitriol, or copperas, half an ounce; of oil of turpentine and train oil, ... en 1815 The Repertory of Arts and Manufactures 260 First in the liquor composed of mordant and fustic, then in green vitriol and Roman vitriol, washed off and repeated according to the colour wanted. en Inorganic compounds Copper