1794. Pearson, trans. Morveaus Chem. Nomencl., 356. Sulphurets, or Sulphures; which were formerly called Hepars or Livers.
1806. S. Parkes, Chem. Catech. (1819), 544. Sulphures, or Sulphurets, combinations of alkalies, or metals, with sulphur.
1794. Pearson, trans. Morveaus Chem. Nomencl., 356. Sulphurets, or Sulphures; which were formerly called Hepars or Livers.
1806. S. Parkes, Chem. Catech. (1819), 544. Sulphures, or Sulphurets, combinations of alkalies, or metals, with sulphur.