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The Edinburgh new Dispensatory : containing 1. The Elements of pharmaceutical Chemistry ; 2. The Materia Medica; or the natural, pharmaceutical and medical History, or the Substances employed in Medicine ; 3. The pharmaceutical Preparations and Compositions ; including Translations of the Edinburgh Pharmacopoeia published in 1805, of the Dublin Pharmacopoeia in 1807, and of the London Pharmacopoeia in 1815
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Chap. X.

Of Mercury.

437

It is one of the preparations of mercury which is capable ofcuring syphilis in every form. It also produces very power-ful and salutary effects in obstructions and chronic inflamma-tions of the viscera, especially of the liver ; and, in general, itis applicable to every case in which mercurials are indicated,

SUBMURIAS HYI1RARGYRI PR-ffiCIPITATUS. Ed,

Precipitated Submuriate of Quicksilver.

Take ofDiluted nitrous acid,Purified quicksilver, each eight ounces;Muriate of soda, four ounces and a half;Boiling water, eight pounds.

Mix the quicksilver r.ith the diluted nitrous acid, and, to-wards the end of the effervescence, digest with a gentleheat, frequently shaking the vessel in the meantime. Butit is necessary to have added more quicksilver to the acidthan it is capable of dissolving, that a perfectly saturatedsolution may be obtained.Dissolve at the same time the muriate of soda in the boilingwater, and into this solution pour the other while still hot,and mix them quickly by agitation ; pour off the saline li-quor after the precipitate has subsided, and wash the Sub-muriate of quicksilver by repeated affusions of boiling wa-ter, which is to be poured off each time after the depositionof the submuriate, until the water comes off tasteless.

SUBMURIAS HYDRARGYRI PR^CIPITATUM. Dub.

Precipitated Submuriate of Qiiicksilver.

Take of

Purified quicksilver, seven ounces, by weight;Diluted nitrous acid, five ounces, by measure.

Pour the acid upon the quicksilver in a glass vessel -, and whenthe mixture has- ceased to effervesce, digest in a moderateheat, with occasional agitation, for six hours. Then in-crease the heat, until the liquor boil a little, which is to bepoured off from the quicksilver which remains, and quicklymixed with a boiling solution already prepared, ofMuriate of soda, four ounces •,Water, ten pounds.

Wash the powder which subsides with warm distilled water,as long as the liquor decanted from it is precipitated bysome drops of the liquor of water of carbonate of kali; thendry it.

In the first part of this process, a perfectly saturated solu-

 
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