CUPB

101

with the nitrate of silver, the oxymuriate of mercury, and all thesalts of lead.Medicinally it is emetic, acrid, styptic, and diuretic: externally eseha-rotic. As a prompt emetic in cases of poisoning, it is given in dosesof gr. ij to gr. xv in Jiij of water, and washed down with a pint ofwarm water. In phthisis, &c, as a nauseant, it is given with pre-caution, in doses of gr. -^ to gr. -5 in form of pill, or dissolved in Oivof water. As a corroborant and tonic, in epilepsy and hysteria, it isgiven in doses of gr. ^ to gr. \ twice a day. Along with olibanumand extract of bark, it is employed iii chronic blenorrhcea. In lotionor injection gr.j to gr. viij in Oj of vehicle; and externally as a sti-mulant, styptic, and escharotic, for warts, fungous, and phagedeniculcers, haemorrhages, and in ulcerated sore throat, applied with acamel-hair pencil, twice or thrice a day.Poisonous in large doses, producing great thirst, parching of the throatand tongue, constriction of the fauces, coppery belchings, and frequentspitting, violent vomiting and retelling, dragging sensation of thestomach, colic, tenesmus, black and bloody stools, syncope, anxiety,cold sweats, vertigo, convulsions, and death.Antidotes. Cojjious draughts of milk and water, or sugar and water,with large doses of syrup and whites of eggs to sheath the corrosivequality, and coffee as a sedative. Bleeding, &c, if inflammationrun high.Tests. Potash precipitates a subsulphate of copper, of a green colour.Ammonia, in excess, will produce a deep blue colour in the solution.A knife, or a stick of phosphorus, dipped in the solution, will appearcoated with metallic copper.F.nlers into Sol. Cupri Sulph. Comp. E.

Cuprum. £. D. Copper has a peculiar metallic odour and taste. Thefilings have been used at the commencement of hydrophobia, in dosesof gr. iij to gr. iv, on bread and butter, but with no effect. Exter-nally to obstinate ulcers. Clean copper is not poisonous.

CuriUJM Ammoniatum. L. E. D. P. Ammoniated Copper, Cuprumammoniacum. O. Ammoniarelum cupri is prepared by taking 3SS ofsulphate of copper, 5yj of subcarbonate of ammonia, rubbing themtogether in a glass mortar, till they cease to effervesce; and dryingthe mass, wrapped in blotting-paper, in a gentle heat. It is injuredby keeping.

Decomposition. During trituration, the sulphuric acid partly passes overto the ammonia; while the carbonic acid unites with the copper,and a sulphate of ammonia and a carbonate of copper are formed.Effervescence arises during the trituration, from two causes: thesulphate of copper contains excess of acid, and so also does the ses-