3. (B. P.) Solution of subacetate of lead, 2 fl. dr.; rectified spirit, 2 fl. dr.; distilled water, 1912 oz. Filter through paper.

Obs. Both the above preparations were formerly made with common vinegar, and hence were coloured, but those of the Pharm. are white. If wanted coloured, a little spirit colouring may be added. The stronger liquor is only used diluted; and the dilute solution is now seldom prepared by the wholesale druggist. The last (diluted solution) is employed as a sedative, refrigerant, and astringent wash, in various affections. Both are poisonous. For the antidotes, see Lead.

Solution of Sulphate of Atropia. Syn. Liquor

atropiæ sulphatis (B. P.). Prep. Sulphate of atropia, 4 gr.; distilled water, 1 oz.; dissolve.—Dose, 1 to 2 minims.

Solution of Sulphate of Copper. Syn. Liquor cupri sulphatis compositus, Aqua styptica. (Ph. L. 1746). Sulphate of copper, 3 oz.; alum, 3 oz.; sulphuric acid, 2 oz.; (by wt.), water, 24 oz. For external use.

Solution of Sulphate of Indigo. Syn. Liquor indigo sulphatis. Prep. Digest 1 part of powdered indigo in 10 of sulphuric acid; when dissolved dilute it with water. Used as a test.

Solution of Sulphate of Mor′phia. Syn. Liquor morphiæ sulphatis, L. Prep. From sulphate of morphia, as the solution of the acetate or hydrochlorate. The uses, doses, &c., are the same.

Solution of Sulphate of Zinc (Compound). See Solution of Alum, Compound.

Solution of Sul′phuret of Potassium. Syn. Solution of hydrosulphate of potassa; Solutio potassii sulphureti, Liquor potassæ hydrosulphatis, Aqua potassæ sulphureti (Ph. D.), L. Prep. Take of washed sublimed sulphur, 1 part; water of caustic potassa, 11 parts: mix, boil for 10 minutes, filter, and keep the solution in well-closed bottles. Sp. gr. 1·117. The product is a mixed solution of hydrosulphate and hyposulphate of potassa.—Dose, 10 to 60 drops, diluted in water; and, externally, made into a lotion; in itch, and several other eruptive diseases.

Solution of Tartrate of Magnesia. Syn. Liquor magnesiæ tartratis. (Airat.) Prep. Tartaric acid, 1514 oz. troy; distilled water, 20 pints; fresh calcined magnesia, diffused in 16 oz. of distilled water, 3 oz. troy and 1 dr.—Dose. As a purgative, 15 oz.