^^F Nbutjul Salts. ^7 



Solution of hydriodate of potash. Hydriodate of potash 

 gr. XXX vj, distilled water 5j : in scrofula and. bronchocele ; gtt. x 

 to XX, ter die, in syrop : will not keep. 



Sal DiuuETicrs, Terra foUata fartari, Kali acctafiim, Acetis 

 potasscp, PotasscB acetas^ A. kali. Saturate subcarb. of potash with 

 distilled vinegar, and evaporate to dryness ; rcdissolve the salt in 

 distilled water, and evaporate until it concretes on cooUng; diure* 

 tic or cathartic, as it is managed, dose 3ss to 3ij. 



SALTS OF SODA. 



TiNCAR, Rough borax, Chrysocolla, Borax cruda. Found upon 

 the edges of lakes ; used in soldering, and for a flux. From the 

 East Indies. 



Refined borax, Borax raffinata, SodcB boras, S. subboras. 

 Dissolve tincar in water, boil for some time, filter and crystallize ; 

 diuretic, emmenagogue, 3ss to 3ij ; externally as a gargle in 

 thrush, or to stop excessive salivation ; used also in soldering. — 

 Glas8 of borax. Borax dried by a gentle heat, breaking down 

 the frothy mass as it rises ; then melted by increasing the heat : 

 the crucible should be cither of silver, gold, or platina. Used as 

 a flux in blowpipe experiments. 



Common salt. Muriate of soda. Chloride of sodium, Sal com.' 

 munis, Sal culinaris. Soda; murias, Murias natricus, Chloruretum 

 sodii. Is found native, and also prepared, in a variety of forms, 

 from the sea water and salt springs, oy evaporation either by the 

 sun's heat, called bay salt ; or by boiling, called white salt. 



Hock salt, Sal gemmoi, S. fossilis. Found native ; when pure 

 does not decrepitate, nor lose weight in a low red heat : it some- 

 times contains from 1 to 4 in the 100 of marl with some sulphate 

 of lime; hence the excise-laws allow 6olb. to be a bushel, instead 

 of 56lb., as in bay salt and boiled salt. Used to make boiled salt, 

 and for the same purposes, 



London s -patent solid salt. Cheshire rock-salt melted in a rever- 

 beratory furnace and ladled out into moulds. Used for pre- 

 serving pickled provisions, as it dissolves very slowly in the 

 brine as it becomes weak. 



Bay salt, Sal marinus, Sal niqcr. Sea water slowly evaporated 

 in shallow ponds by the sun ; dark grey, in square hoppers ; con- 

 tains iodine : imported from France, Portugal, and Spain. 



Clir.^h ire stored salt. Lump salt, Basket salt. By quick boiling 

 the brine of salt springs until only so much water ls left as merely 

 to cover the small flaky crystals m the boiler, which are then put 

 into conical wicker baskets, drained, and dried in stones : 100 tons 

 of saturated brine will yield ^^ tons of salt. 



