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Goulard's Water or Lotion

eructations, heartburn, &c., it may be taken Mix 1½ fluid drachms diacetate of lead with 2 with great benefit. It neutralizes the acid, fluid drachms proof spirits and 1 pint distilled and counteracts the morbid tendency of the water.

This lotion is sedative, refrigerant, stomach to acid secretion. Dose, 10 drops, and astringent. This is the dilute solution of gradually increased to 40. It is powerfully diacetate (or subacetate) of lead. poisonous, and should be greatly diluted in not effervesce with acids, nor give a precipitate with lime-water, or with a solution of

4777. Donovan's Arsenic and Mer- anything not acidulous. When pure, it does cury Solution. Triturate 6 grains finely powdered pure arsenic, 16 grains pure mercury, and 50 grains pure iodine, with oxalate of ammonia. (See No. 101). fluid drachm alcohol, until dry; then add 4785. Liquor of Soda; Solution of gradually 8 fluid ounces water, triturating Soda; Soda Lye; Hard-Soap Lye; &c. constantly; heat the mixture in a flask until The proportions are, crystallized carbonate of it begins to boil, and, when cold and filtered, soda, 32 ounces (troy); recent quicklime, 9 add sufficient water to make up to 8 fluid ounces (troy); boiling water, 1 gallon; the ounces 6 fluid drachms. Dose 10 to 30 drops, lime being slacked with a little of the water. 2 or 3 times a day, soon after a meal, for scaly The product is stated to have specific gravity 1.061, and to contain about 5 per cent. of skin diseases.

4778. Standard Solution of Chloride pure caustic soda. The process by which of Calcium. Dissolve carefully 2 grains the above is made is similar to that noticed pure carbonate of lime in a little pure hydro- under "Liquor of Potassa." The test of its chloric acid; evaporate the solution to dry- purity, and uses, are also the same. (See Nos. ness, and dissolve the residuum in 1 pint pure 4784 and 102.) water. This forms the standard solution of 4786. Solution of Chloride of Lime. 15° of hardness. 1 measure of this solution This solution, usually called bleaching liquor, mixed with 15 of water constitutes a solution of 1° of hardness 2 measures of it with 14 of water make a solution of 2° of hardness &c.

This solution is the standard used in testing the hardness of water. is prepared of 1 part chloride of lime to 10 parts of distilled water (both by weight).

That is, 2 ounces to the pint, or 1 pound to the gallon. This is the ordinary strength of that of the shops; but in that which is sold as Concentrated Solution of Chloride of Lime, 4779. Solution of Iodide of Potassium. Dissolve 10 grains iodide of potas- the proportions are usually 3 parts of the sium and 5 grains iodine in 1 pint water. chloride to 20 of water. That is, 14 pounds Dose, 2 to 6 grains in the usual case where per gallon. The British Pharmacopœia diiodine is employed. rects the chloride to be triturated with the 4780. Solution of Chloride of Cal- water in a wedgwood-ware or porcelain morcium. Dissolve 4 ounces fused (or 8 ounces crystallized) chloride of calcium, in 12 ounces water, and filter. Dose from 10 drops to 2 drachms, for scrofulous tumors, &c.; also used as a test for sulphuric acid, in contact with which it throws down a white precipitate insoluble in nitric acid. 4781. Solution of Sulphate of Morphia. Dissolve 16 grains sulphate of morphia in 4 drops dilute sulphuric acid, 1 fluid ounce water, and 1 fluid drachm rectified spirit. Dose, 5 to 10 drops.