6. (From the root-bark; Extractum corticis sarzæ, L.) From the decoction or tincture of the root-bark. The cortical portion of sarsaparilla yields fully 50% of aqueous extract. “Five times as much as the meditullium.” (Pope.)
Obs. Each of the above extracts of sarsaparilla (simple, fluid, and compound), when of good quality, dissolves in water, forming a deep reddish-brown solution, perfectly transparent, and depositing little sediment, even by standing some days. See Sarsaparilla.
1. Extract of Savine. Syn. Extractum Sabinæ. (Ph. L. 1788.) By evaporating a decoction of dry savine.
2. (Ph. U. S. Extractum Sabinæ fluidum.) As fluid extract of cubebs. (Ph. U. S.)
Extract of Scam′mony. Syn. Resin of scammony; Resina Scammonii, E. s. alcoholicum, E. sive resina scammonii (Ph. E.), L. Prep. 1. From powdered scammony, exhausted with proof spirit, and the resulting tincture distilled until little but water passes over; the remaining water is then poured from the resin, which is next well washed in boiling water and dried at a temperature below 240° Fahr. Brown; impure.
2. As the last, but using either alcohol of 90% or ether, and animal charcoal. White; pure.
Obs. Scammony resin is translucent, fusible, and combustible; and freely soluble in alcohol, ether, and oil of turpentine. It is frequently adulterated with jalap resin, a fraud readily detected by its insolubility in the last two menstrua.—Dose, 5 to 10 gr. “When pure or virgin scammony can be procured it is an unnecessary preparation.” (Pereira.)
Extract of Scurvy-grass. Syn. Extractum cochleariæ, L. Prep. (P. Cod.) From the clarified juice of fresh scurvy-grass, by exposure to warm air. Anti-scorbutic, stimulant, anti-rheumatic, and diaphoretic.—Dose, 1 to 2 dr. The valuable principles of the juice are dissipated by much heat.
Extract of Sen′ega. Syn. Extractum senegæ, L. Prep. 1. (P. Cod.) From seneka or snake-root (Polygala Senega), as EXTRACT OF BOX—P. Cod.
2. Compound; Extractum senegæ, COMPOSITUM, E. s. et scillæ, L.—Ecky.) From equal parts of squills and senega, as the last, but by displacement. Both the above are stimulant, expectorant, sudorific, and diuretic.—Dose, 1 to 12 gr.