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matics. In larger doses it is emetic. Mr. Brande says it is astrin-gent, but this must be a mistake.Infusu.u Tabaci. L. D. Infusion of Tobacco. Take 5j of tobacco-leaves, Oj of boiling water, infuse for an bour and strain. It isonly used in form of enema for incarcerated hernia, suppression oiurine, and for worms. It is by no means safe, however, particularlyfor children.Poisonous, producing nausea, syncope, cold sweats, convulsions, anddeath. The best treatment is a speedy emetic, at first to be followedby purgatives and stimulants. When these effects arise from anenema, &c, hot brandy and water with camphor, and other strongstimulants, will be necessary.Infusum Valeriana. D. Infusion of Valerian. Take ^ij of valerianroot in coarse powder, Jvij of boiling water, infuse for an hour, andstrain when cold.Incompatible with infusion of bark, nitrate of silver, and the sulphates

of iron and zinc.Medicinally it is a good form for valerian, and may be combined witharomatics and antispasmodics, in doses of Jjss to jij thrice a day,when the stomach rejects the powder.Injections are medicated fluids, which are, by means of a syringe,thrown into the urethra, the vagina, the uterus, and into fistulousopenings. Their utility, particularly in gonorrhoea, has been muchdisputed; but, like many other disputes, this has arisen from not ex-amining the particular circumstances in which injections have beenadvantageous or injurious. In the first or acute stage they areusually objectionable; in the chronic stage they often succeed whenevery thing else has failed.Injectio Acidi Muriatici. Injection of Muriatic Acid. Take Jiv ofdistilled water, fllviij of muriatic acid; mix and inject in gonorr-hoea attended with ardor urinoe. (Wyatt.)Injectio Aluminis. Injection of Alum. Take gr. iv to Jj of super-sulphate of alumine, giv to Jvj of distilled water; mix, and injectin gleet, gonorrhoea, and prolapsus recti.Injectio Ao.u.ffi: Calcis Composita. Compound Injection of LimeWater. Take giv of lime water, Jij of olive oil, n^xxiij of solutionof acetate of lead; mix, and inject in gleet, fistuls, &c.Injectio Balsamica. Balsamic Injection. Dissolve Jss of copaiba inthe yolk of one egg, and add 3VJ of lime water, and Jj each of rosewater and the watery solution of myrrh. (Barensprung.)Injectio Copaiba. Injection of Copaiba. Take 5 j to ^ij of balsamof copaiba, 3SS of gum arabic mucilage, giv of lime water or of rosewater, triturate the copaiba and mucilage well together, and

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