A Vitriolic Errhine.
Take Marjoram water (or Thea made with Marjoram) 1 ounce; dissolve in it Salt of Vitriol half a scruple.
Ettmuller Takes white Vitriol 2 drams, water 8 ounces dissolves, and lets it stand to precipitate.
Sometimes he allows but 2 scruples to 8 ounces; but if it be too strong, it may be easily weakened, to an y degree with Water.
'Tis one of the best Errhine, to bring away Mucus and plenty of Rheum: And if it be made mild, it may be used to new born Babes, when their Nostrils are stopt.
Thomas Fuller
Pharmacopeia Extemporanea 1710