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the heat of the sun for ten or twelve days, taking it in at night, andshaking it till the soap is dissolved; then filter through cotton. Ifproperly made it will be transparent, and of the colour of sack. Theolder the soap the better.Imitated by using common tallow soap and malt brandy, and is not sostrong by half as the genuine.Liquor iETHEREUs Oleosus. D. See Oleum ^Ethereum. L.Liquor Alujiinis Compositus. L. Compound Alum Water. Aquaaluminosa Bateana. O. Take Jss each of alum and sulphate of zinc,Oij of boiling water; dissolve the alum and the sulphate of zinc inthe water, and filter through paper.No decomposition takes place, the alum and the sulphate of zinc exist-ing uncombined in the proportion of seven grains and a half of eachin the ounce.Medicinally it is a strong astringent, and is used for collyria, injections,for cleansing foul ulcers, and as a corroborant lotion for removing orpreventing chilblains. It sometimes requires the addition of morewater or mucilage to dilute and moderate its astringency.Liquor Ammonite. L. Solution of Ammonia. Aqua ammonia, E.Aqua amm. causlicw. D. Take Jviij of muriate of ammonia, ^vj offresh quicklime, Oiv of water; pour Oj of the water upon the lime,and set them by for an hour in a covered vessel; then add the mu-riate and the rest of the water previously heated, and again coverthe vessel. When the liquor has cooled strain it, and distil Jxij ofthe solution of ammonia into a receiver of the temperature of 50°.Decomposition. The muriate of ammonia is decomposed by the quick-lime, which, on account of its superior affinity, unites with the mu-riatic acid, forming muriate of lime. The ammonia thus set free,passes over in the gaseous form, and unites with the water in thereceiver, leaving the muriate of lime in the retort. The ammonia-cal gas is colourless and invisible; but when subjected at the tem-perature of 50° to the pressure of 6-5 atmospheres it becomes fluid,spec. grav. 0-760. The solution contains about ten per cent, of theammonia.Adulterated very frequently with carbonate of ammonia, which will atonce be detected by dropping a little of it into lime water, whencarbonate of lime will be precipitated, which will dissolve with effer-vescence in nitric acid. When its strength has been impaired bywater, its specific gravity will detect the fraud; this ought to be '960,but it may be made as strong as -875, when it will contain 39.\ percent, of ammonia. It ought to be kept well stopped in small bottles.Incompatible with all the acids, with sulphate of alumina, and withmetallic salts, but not with the saline solutions of barytes and lime.