I

IK

400

SODT-

Medicinally it is prescribed in the same cases as the solid carbonate ofsoda.

SoDjE Murias. L. E. D. P. Muriate of Soda. Sal commune. Com-mon Salt. Chloride of Sodium. This is improperly termed muriateof soda, according to Sir H. Davy, who says it contains neither sodanor muriatic acid, but is a binary compound of thirty-six parts ofchlorine and twenty-four parts of sodium; it is only a muriate ofsoda when dissolved in water. Berzclius says, it contains 53-44. ofsoda, and 43'55 of muriatic acid.

Adulterated with muriate of magnesia, and muriate of potass. Themuriate of magnesia renders it deliquescent and bitterish to thetaste.

Soluble in about three parts of water, cold or hot, but more readily inhot water.

Internally it is stimulant, tonic, purgative, and vermifuge. In largedoses it appears to act as an astringent, restraining hemorrhage. Asa vermifuge, Ur. Rush prescribed 5SS in the morning of a powdercomposed of 51) of muriate of soda, and 3ij of cochineal. The doseas a purgative is 3SS to Jj largely diluted with water: as a stimulantand tonic gr. x to \j is the common dose: in form of enema 5iv to J jin Oj of water. Dr. Darwin proscribed its being used with food,but lie was wrong.

Externally it is used to form an artificial sea-water bath; and as afomentation for bruises, &c. With equal parts of bread crumbs andlinseed meal, a saturated solution of common salt forms a goodcataplasm for scrofulous and lymphatic swellings. Purmann's remedyfor chronic tumours of the joints is prepared by boiling for half anhour ftij of solution of salt, itej of concentrated vinegar, a handful ortwo of sage-leaves, ^xij of sulphate of copper, and 5vss of sulphateof alumine, and applying it hot to the parts.

Enters into Acid. Muriaticum. L. E. D. Murias Sodse Exsicc. E. D.Sodte Phosphas. E. D. Subphosphas soda;. P. See Phosphas.SodjB Sub-boras. L. D. P. Borax. Boras soda;. E. It is foundnative in Persia and Thibet, and imported from India under thename of Tincal, which is an impure article, but is purified bycalcining, dissolving, and crystallizing it. The crystals may bedeprived of their water of crystallization by heat, and it is thus thatcalcined borax is formed, which is a biborate.

Adulterated with fused common salt, and also with alum, which areeasily detected by the tests of nitrate of barytes, and nitrate of silver,solutions of either of which may be added to a solution of borax indistilled water saturated with nitric acid.

Chemically, it contains seventeen parts of soda, thirty-four of boracic