38

ASAR

Adulterated with chalk, gypsum, and sulphate of baryta; but itsgenuineness may be proved by its wholly volatilizing by heat, and byits leaving no insoluble deposit in preparing Fowler's solution.

Poisonous in a violent degree, producing a metallic taste, salivation,vomiting of brown and bloody matter, heat and violent pain of thestomach, black and foetid stools, burning thirst, constriction of thethroat and difficult breathing, bloody urine, epileptic convulsions,and death.

Antidotes. It is best counteracted by large draughts of sugared water topromote vomiting, followed by linseed tea, or other bland fluids, andlime water, or chalk and water, or solution of soap. Charcoal is saidto be a good antidote. Inflammatory symptoms are to be combatedby bleeding.

Tests. The presence of arsenic is detected by its producing a grassgreen with ammoniaeo-sulphate of copper, a yellow precipitate withammoniaco-nitrate of silver, a yellow precipitate with sulphurettedhydrogen, and a smell of garlic when thrown on hot coals, orplaced on red-hot iron. The two latter tests are the most to bedepended on.Arsenici Oxydum Sublimatum. L. D. Sublimed oxide of Arsenic,prepared by reducing the white oxide of arsenic to powder, and sub-liming it by heat from a crucible into another crucible inverted overit. It is chiefly used for medicinal purposes, being of more uniformstrength than the other.

Medicinally it is tonic, in doses of gr. -rV to gr. \ in bread pills, rubbedup with ten times its weight of sugar, for intermittent and periodichead-ache, and in leprosy, and other cutaneous diseases.

Externally it is used as an escharotic in cancerous sores, in form oflotion or ointment. See Conspectus qf Prescriptions.

Enters into Arsen. Potassa:. D. Liq. Arsenicalis. L.Artemisia Dhacunculus. Tarragon, is used to make a vinegar which

is stimulant and whetting to the appetite.Artemisia Santonic^e Cacumina. E. D. Tops of Tartarian South-ernwood, are bitter, stimulant, anthelmintic, in doses of gr. x to Jssof the powder, twice a day in honey or treacle for worms. The seedsare also used. See Santonica.

Enters into Pulv. Asari Comp. E.Artichoke. The Cinara scolymus. P. The leaves are tonic, astrin-gent, and diuretic. In dropsy and jaundice Jss to 3J of the expressedjuice may be given in wine twice a day.Arum Dracuncui.us. P. Snake Wake-robin, Arum-iriphyllum (Coxe).An acrid expectorant, the decoction of the dried root in milk beingused in phthisis. The pulp is used externally in porrigo.Asari Folia. L. E. D. P. Leaves of Asarabacca, Asarurn Europwa,