has been highly recommended as a preservative against scarlet fever. It is most frequently employed externally, under the form of a plaster, ointment, or lotion. It is poisonous.
5. (Alcoholic; E. b. alcoholicum, L.)—a. (P. Cod.) As ALCOHOLIC EXTRACT OF ACONITE—P. Cod.
b. (Ph. U. S.) As the last (nearly), using spirit of ·935 (=about 13 u. p.).
c. (Moir.) The expressed juice is coagulated by heat, cautiously applied, and filtered; the filtrate is reduced to the consistence of a syrup, and mixed with an equal volume of nearly anhydrous alcohol (say of 90%); the clear portion is lastly evaporated, as before.
Obs. The above is much more powerful than the common extract, and is chiefly used in external applications. See Belladonna, and below.
Extract of Belladonna Ber′ries. Syn. Extractum baccarum belladonnæ, L. Prep. (P. Cod.) From the expressed juice of the berries, evaporated to the consistence of thick honey.—Dose, 1 to 5 gr.
Extract of Bis′tort. Syn. Extractum bistortæ, L. Prep. 1. (P. Cod.) From the dried root of bistort or snake-weed (Polygonum Bistorta), by percolation with temperate distilled water.
2. From the infusion made with boiling water, or from the decoction. Astringent and tonic.—Dose, 10 gr. to 1⁄2 dr.
Extract of Bit′ter-sweet. Syn. Extract of woody nightshade; Extractum dulcamaræ, L. Prep. 1. From the decoction of the stalks.
2. (Ph. U. S.) From the dried stalks, by percolation with temperate water. Diaphoretic, diuretic, and narcotic.—Dose, 3 to 6 gr.; in chronic asthma, rheumatism, and chest diseases; and particularly in chronic skin diseases.