AMMO

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J'umentarius (not B. igniarius, as hitherto supposed). Free the fungusfrom the skin and the porous parts, and beat the rest into a softspongy mass, of a reddish colour. Black Amadou is the precedingor red Amadou rolled in gunpowder, to render it more combustibleas tinder, for which it is much used on the continent.

Amanitine. The poisonous principle of several fungi.

Amber. It contains an odoriferous oil; a yellow (vegetable ?) resin ;a resin soluble in ether and alkaline solutions, but very slightly inalcohol; succinic acid; and an insoluble body like the principle oflac. (Berzelius.) The more impure specimens are used for distil-ling oil of amber.Medicinally. White amber in powder is given as a balsamic, in doses

of 9j to ^j, in leucorrhoea, gleet, &c.Liquid amber, which is used in perfumery, and is a very differentsubstance, is procured, by incision, from a tree.

Ambergris. Ambra cinerea. P. Is chiefly used in perfumery, andcomes from Holland, Africa, Brazil, and the East and West Indies,where it is found floating on the sea. That which is grey, very light,and easy to break, is the best; that which is brown or black, heavy,and difficult to break, being inferior.Adulterated with wax, storax, gums, and white writing sand, whichmay be detected by a magnifying glass, or by thrusting into thepieces a hot needle, and observing the odour.Medicinally, it is given, in doses of gr. iij to gr. x as an antispasmodic,and nervine, and it is said to be aphrodisiac. The Codex directs botha simple and an etherial tincture.

Ambrette. P. Seeds of the Hibiscus abelmoschus. A stimulant intinea capitis, and a cosmetic for eruptions of the face.

Ambueio Acid is procured by digesting ambrei'nc in nitric acid.

AmbreYne is the chief constituent of ambergris, and very similar tocholesterine. (MM. Pelletier and Caventou.)

Amidine. New. A chemical substance procured from starch, and in-termediate between it and gum. Dr. Turner says, that the termmay be applied to starch either when torrified or mixed with boilingwater.

Ammi. P. The seeds of Sison ammi, and S. amomnm. Warm, sti-mulant, and carminative, in dyspepsia.

Ammonia. The volatile alkali, which exists pure only in the state ofgas, and must be collected over mercury. It is proved to consist of3 hydrogen and 1 azote, united. See Ammonite Subcarbonas.Enters into Amnion. Sub. Carb. L. Amnion. Mur. L.

Ammoniacum. L. E. D. P. Ammoniac, or gum ammoniac, a gum-resin, procured from the Hcracleum gummiferum.