Pteris Atropurpurea. (Rock Brake.)
A tincture should be prepared from the entire plant fresh, ℥viij. to Alcohol 76° Oj. Dose from gtts. v. to gtts. x.
This remedy has been but little used except in domestic practice. It exerts a marked influence upon the excretory apparatus, controlling diarrhoea, dysentery, night sweats, hemorrhages, etc. This may depend to some extent upon its tannic acid, but there is an influence beyond this. Will some of our practitioners prepare a tincture and test it, and report?