!8

LIQU

5j of rectified spirit; dissolve the sublimate in the water, and thenadd the spirit.

Impaired by keeping, or exposure to light, which decomposes it, andcalomel is precipitated, leaving a little free muriatic and chloricacids in the solution. This decomposition, however, may be pre-vented by adding a few grains of muriate of soda or ammonia, or afew drops of muriatic acid. The decomposition is promoted byalcohol.

Incompatible. See Hydrarg. Oxymur.

Medicinally this preparation is intended to divide this active medicineinto very small doses, 3J of the solution containing only half a grainof sublimate. The dose is from 5ss to 5\j twice a day, in any syrup,honey, mucilage, or infusion of linseed.Liquor Hydriodatis Potasses. Triturate in a glass mortar till dis-solved, gr. xxiv of hydriodate of potass with gj of distilled water.Dose ten to thirty drops.Liquor Hydriodatis Potass^e Ioduretus. Triturate in a glassmortar gr. xxxvj of the hydriodate of potass, gr. x of iodine, 5X ofdistilled water. Dose ten to thirty drops thrice a day.Liquor Morphine Citratis. Take gr. xvj of pure morphine, gr. viijcrystals of citric acid, Jj of distilled water, with enough of tincture ofcochineal to colour it. Dissolve. Dose five to twent3'-five drops.Liquor Opii Sedativus, prepared by Mr. Battley, is better fitted forinjections, collyria, and lotions, than the tincture of opium. SeeBattley.

Imitated by mixing Jjss of opium with Jjx of pure water and Jj ofpyroligneous acid.

Dose six to ten drops or more. (Dr. Epps.)Liquor Plumbi Subacetatis. L. Solution of Subacetate of Lead,or Goulard's Extract. Liquor suhacet. lytkargyri. D. Extractionsaturni. O. Take Ibij of semivitreous oxide of lead (litharge), onegallon of diluted acetic acid; mix, and boil down to Ovj ; set thisaside till the dregs are deposited, and then decant and filter.

Chemically the acetic acid unites with the oxide of lead, and the sub-acetate of lead remains in solution. Its strength will depend on thespec. grav. of the vinegar ; and the colour, on its purity; commonvinegar giving a deep yellowish brown, and distilled vinegar a palestraw colour, with a tinge of green. It is injured by keeping, as itdeposits oxide of lead.

Medicinally it is employed as a cooling and astringent external appli-cation to inflamed surfaces and old ulcers, and, when diluted, is usedas an eye-water in purulent ophthalmia. As there is a possibility ofits being absorbed, and producing colica pictonum, impotence, para-