40

AUIU

the shells. Boil the whole in three quarts of water till reduced tothree pints. Then boil a pint of new milk, mix it with the rest, andput into it Jij of balsam of Tolu. Dose half pint morning andnight.

Astringent Powder (Strong), in Farriery. Take ftj each of sulphateof copper and Armenian bole in powder, and mix. (Pharm. Vete-rinary College.)

Astringent Powder (Mild), in Farriery. Take ibj each of driedalum and Armenian bole in powder, and mix. (Pharm. Vet. Coll.)

Astringent Principle. Another name for Tannin.

Astringents. Medicines employed to restrain profluvia, such asfluxes, hemorrhages, gleet, leucorrhoea, &c. See Conspectus of Pre-scriptions.

Atmometer, an instrument for measuring the quantity of exhalationfrom a humid surface.

Atropia, or Atropine. New. An alkali discovered by M. Brandesin the Atropa belladonna, and retaining its narcotic properties. It isprocured by adding sulphuric acid to the expressed decoction of theherb, till there is no longer any precipitation, and then adding to theacid liquor a solution of potass as long as there is any precipitate,which is the atropia; and it must be carefully put on a filter, andwashed and dried. The crystals are prismatic, and of a fine whitecolour.Soluble in hot, less so in cold, alcohol. Insoluble in cold water, oils,

and ether.Medicinally it has not been used: but might be useful in ointmentsand lotions for rheumatism, tic-douloreux, necroses, &c. See Mu-riate op Atropine, and Sulph. of Atrop.

Attar of Roses. See Otto of Roses.

Attenuant Medicines are diluents, such as water and whey for thin-ning the blood, as the theory goes.

Aurantii BacCjE Cortex. L. E. D. P. The fruit and peel of theSeville Orange, Citrus aurantium. The pulp is cooling and refresh-ing in fevers, inflammations, and scurvy ; and alterative in phthisisand dyspepsia. The peel is an aromatic bitter tonic in doses of thepowder 5ss to 3ij. Externally the pulp is applied as a cataplasm tofoetid sores.Enters into Aq. Citri Aurantii. E. Sue. Cochleariae Comp. E. Con-serv. Cort. Aurantii Comp. L. Infus. Gentianae Comp. L. E. D.Syr. Aurantii. L. D. Spir. Armoracife Comp. L. D. Tinct. Cin-chona Comp. L. D. Tinct. Gentians Comp. L. Tinct. Aurantii.L. D.

Auric Acid. A term proposed by M. Pelletier for peroxide of. gold,