ALK.ALIES AND THEIR CARBONATES. 273 



Tobacco ashes. The smuggled tobacco seized by the English 

 government is all burned, and the ashes alone sold. 



Treves potash, Potasse de Treves, is as strong as pearl-ash. 



VosGEs POTASH, Potassc de Vosges. Used in France, the 

 weakest of those usually sold. 



Dantzic potash. Resembles Russian potash, but is rather 

 weaker. 



Russian potash, Cineres Russlci. From beech, birch, 

 poplar, or alder, burned to ashes, part of the ashes elixated with 

 water, and the ley used to moisten the remainder of the ashes, 

 overing fresh billets of wood with the moistened ashes, and set- 

 ling the pile on fire. From Russia and Sweden, in large black 

 lumps as hard as a stone, with a sulphureous smell; solution 

 green, tinging silver dark purple. Petersburg. 



Travancore potash. From cocoa-nut branches. — Mara 

 nppoo. From cocoa-nut and plantain leaves. 



Subcarbonate of potash. Kali praparatum^ Suhcarbo)ias 

 aliy Carbonas potasses ^ Potasses sitbcarbonas. Pour upon burnt 

 lees of wine an equal weight of boiling water ; filter and evaporate 

 nntil the liquor grows thick, then remove the fire, and stir the 

 lit continually, until it concretes into small grains. As burnt 

 iees of wine arc now with difficulty procurable in England, pearl- 

 ash is used for them. This is used in acidities of the primae viae, 

 nd in glandular obstructions. Dose from gr. x to 3ss properly 

 nluted. The incompatibles are, the mineral acids, muriate and 

 acetate of ammonia, sulphate of magnesia, lime, and lime water, 

 t11 the metallic salts. — Officinal preparation. Liquor potassae 

 ibcarbonatis, L. D. 



NiTRK FIXED BY CHARCOAL, Subcarbonatc of potash, Nitrum 

 n carbonibns fixaium. Nitre 16 oz., charcoal powder 4oz. ; melt 

 the nitre, and throw into it the charcoal powder, until it ceases to 

 take fire : produces 13 or 14 oz. of subcarbonate of potash, equal 

 to salt of tartar. 



White flux, Cornish flux, Fluxus alhns. Nitre and tartar ana 

 p. aeq. : deflagrate as before. — All these alkalies are diuretic, in 

 doses gr. v. to 3j, cathartic in larger doses; they are used in 

 making glass, in bleaching and scouring cloth, and to precipitate 

 alum. 



Saline oil of tartar. Oil of tartar. Oleum tartari per de- 

 i'quium. Aqua kali. Spread salt of tartar, pearl-ash, or potash 

 lin, on plates, in a damp cellar, and when it has run into water, 

 rain through linen ; used in scouring. 



Liquor potass.e subcarbonatis, Aqua subcarbonatis kali. 

 subcarbonate of potash .Ixij, distilled water 3xij ; dissolve and 



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