Chem. Obs. (See quot.)
1706. Phillips, Æthiops Mineral, a Medicine made by Imbodying equal Parts of running Quicksilver and Flower of Brimstone, and then Deflagrating or Burning off the Mixture in a Crucible.
1755. Johnson, Æthiops Mineral, a Medicine, so-called from its dark colour, prepared from quicksilver and sulphur, ground together in a marble mortar to a black powder. [J. cites Quincy.]
