Potassio-Sulphate of Iron.

Potash Iron Alum. (KO, SO3 + Fe2O3, 3 SO3 + 24 HO.)

Med. Prop. and Action. Tonic and astringent. The Potash and Ammonia Sulphates of 'Iron are said to equal, if not exceed, ordinary alum in astrin-gency, and not to possess the stimulating action of the stronger salts of Iron.*

Dose, gr. iij. - gr. vj.